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Safarzadeh Markhali, Fereshteh. "Effect of Processing on Phenolic Composition of Olive Oil Products and Olive Mill By-Products and Possibilities for Enhancement of Sustainable Processes." Processes 9, no. 6 (May 27, 2021): 953. http://dx.doi.org/10.3390/pr9060953.
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The bio-functional properties of olive oil products and by-products rely greatly on the proportions and types of the endogenous phenolics that may favorably/unfavorably change during various processing conditions. The olive oil industrial activities typically produce (i) olive oils, the main/marketable products, and (ii) olive mill by-products. The mechanical processing of olive oil extraction is making progress in some areas. However, the challenges inherent in the existing system, taking into consideration, the susceptibilities of phenolics and their biosynthetic variations during processing, hamper efforts to ascertain an ideal approach. The proposed innovative means, such as inclusion of emerging technologies in extraction system, show potential for sustainable development of olive oil processing. Another crucial factor, together with the technological advancements of olive oil extraction, is the valorization of olive mill by-products that are presently underused while having great potential for extended/high-value applications. A sustainable re-utilization of these valuable by-products helps contribute to (i) food and nutrition security and (ii) economic and environmental sustainability. This review discusses typical processing factors responsible for the fate of endogenous phenolics in olive oil products/by-products and provides an overview of the possibilities for the sustainable processing to (i) produce phenolic-rich olive oil and (ii) optimally valorize the by-products.
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Filippi, C., S. Bedini, R. Levi-Minzi, R. Cardelli, and A. Saviozzi. "Cocomposting of Olive Oil Mill By-Products: Chemical and Microbiological Evaluations." Compost Science & Utilization 10, no. 1 (January 2002): 63–71. http://dx.doi.org/10.1080/1065657x.2002.10702064.
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Liébanes, María D., José M. Aragón, María C. Palancar, Gema Arévalo, and David Jiménez. "Fluidized Bed Drying of 2-Phase Olive Oil Mill By-Products." Drying Technology 24, no. 12 (December 2006): 1609–18. http://dx.doi.org/10.1080/07373930601031059.
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Umara, U., MM Alam, M. Kabir, H. Mahmud, and MS Rahman. "Value Chain Analysis of Free Fatty Acid of Rice Bran Oil in Bangladesh." Bangladesh Journal of Agricultural Research 45, no. 4 (December 15, 2022): 379–93. http://dx.doi.org/10.3329/bjar.v45i4.63245.
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The study was conducted at Emerald oil mill and Poultry Industries Limited, Sherpur and Square Toiletries Ltd. at Shalghoria, Pabna to assess the financial analysis of the rice bran oil mill and to determine the value chains system of rice bran edible oil chemical by-products specially free fatty acid and actors involved in marketing of FFA in Bangladesh during the year 2013-2014. Tabular and statistical analyses were done. Results revealed that the rice bran edible oil was produced as the main product (7948 t/mill/year), and de-oil rice bran (39600 t/mill/year), free fatty acid (1495 t/mill/year), gum (332 t/mill/year), wax (329 t/mill/industry) and splint earth (808 t/mill/industry) products were also produced as chemical by-products in oil mill. Free fatty acids, gum and wax were used in soap factories. The oil mill purchased 49,500 tonnes of rice bran annually. Total cost of production was estimated at lakh Tk. 13969.85 and total variable cost was lakh Tk. 13032.98. Gross return of the oil mill was calculated at lakh Tk. 14838.03/year and lakh Tk. 867.10 was obtained from free fatty acids annually. The net profit lakh TK. 868.18/year/ industry was achieved from rice bran, while the FFA earned Tk. 30344 per ton as net profits. The benefit cost ratio was 1.06 in the oil mill. The higher return on investment was gained in free fatty acid. Minimum marketing cost was found in shorter chain-I (Oil mill – soap factory) and longer chain-III (Oil mill – Commission agent 1 – Commission agent 2 – Soap factory) produced maximum marketing cost in the FFA value chain system. Total marketing margin and total profit were achieved Tk. 10.50/kg and Tk. 2.90/kg, respectively. Free fatty acid as a chemical byproduct in rice bran oil processing has esteemed market value in soap factories that contribute to the national economy.
Bangladesh J. Agril. Res. 45(4): 379-393, December 2020
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Zahan, Khairul, and Manabu Kano. "Biodiesel Production from Palm Oil, Its By-Products, and Mill Effluent: A Review." Energies 11, no. 8 (August 16, 2018): 2132. http://dx.doi.org/10.3390/en11082132.
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The sustainability of petroleum-based fuel supply has gained broad attention from the global community due to the increase of usage in various sectors, depletion of petroleum resources, and uncertain around crude oil market prices. Additionally, environmental problems have also arisen from the increasing emissions of harmful pollutants and greenhouse gases. Therefore, the use of clean energy sources including biodiesel is crucial. Biodiesel is mainly produced from unlimited natural resources through a transesterification process. It presents various advantages over petro-diesel; for instance, it is non-toxic, biodegradable, and contains less air pollutant per net energy produced with low sulphur and aromatic content, apart from being safe. Considering the importance of this topic, this paper focuses on the use of palm oil, its by-products, and mill effluent for biodiesel production. Palm oil is known as an excellent raw material because biodiesel has similar properties to the regular petro-diesel. Due to the debate on the usage of palm oil as food versus fuel, extensive studies have been conducted to utilise its by-products and mill effluent as raw materials. This paper also discusses the properties of biodiesel, the difference between palm-biodiesel and other biodiesel sources, and the feasibility of using palm oil as a primary source for future alternative and sustainable energy sources.
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Guida, M. Y., and A. Hannioui. "A review on thermochemical treatment of biomass: Pyrolysis of olive mill wastes in comparison with other types of biomass." Progress in Agricultural Engineering Sciences 12, no. 1 (December 2016): 1–23. http://dx.doi.org/10.1556/446.12.2016.1.
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Each year, a great quantity of olive oil is produced by the unit mill of trituration. This activity generates two by-products named olive mill wastewater and olive mill solid waste representing major potential waste and environmental problem. However, there is growing interest in pyrolysis as a technology to treat wastes to produce valuable oil, char and gas products. The major important aim of waste pyrolysis is to produce liquid fuel or bio-oil, which is easy to store, transport and can be an alternative to energy source. The key influence on the product yield is the type of biomass feedstock and operating parameters (especially temperature and heating rate). It is important to investigate the effect of variables on response yield and impulse about their optimization. This study reviews operating variable from existing literature on olive mill wastes (OMSW and OMWW) in comparison with various types of biomass. The major operating variables include type of feedstock, final temperature of pyrolysis, heating rate and particle size. The scale of this paper is to analyse the influence of operating parameters on production of pyrolysis bio-oil, char and gaseous products.
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Foti, Paola, Flora V. Romeo, Nunziatina Russo, Alessandra Pino, Amanda Vaccalluzzo, Cinzia Caggia, and Cinzia L. Randazzo. "Olive Mill Wastewater as Renewable Raw Materials to Generate High Added-Value Ingredients for Agro-Food Industries." Applied Sciences 11, no. 16 (August 16, 2021): 7511. http://dx.doi.org/10.3390/app11167511.
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Olive oil production represents an agro-industrial activity of vital economic importance for many Mediterranean countries. However, it is associated with the generation of a huge amount of by-products, both in solid and liquid forms, mainly constituted by olive mill wastewater, olive pomace, wood, leaves, and stones. Although for many years olive by-products have only been considered as a relevant environmental issue, in the last decades, numerous studies have deeply described their antioxidant, anti-inflammatory, immunomodulatory, analgesic, antimicrobial, antihypertensive, anticancer, anti-hyperglycemic activities. Therefore, the increasing interest in natural bioactive compounds represents a new challenge for olive mills. Studies have focused on optimizing methods to extract phenols from olive oil by-products for pharmaceutical or cosmetic applications and attempts have been made to describe microorganisms and metabolic activity involved in the treatment of such complex and variable by-products. However, few studies have investigated olive oil by-products in order to produce added-value ingredients and/or preservatives for food industries. This review provides an overview of the prospective of liquid olive oil by-products as a source of high nutritional value compounds to produce new functional additives or ingredients and to explore potential and future research opportunities.
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Abbattista, Ramona, Giovanni Ventura, Cosima Damiana Calvano, Tommaso R. I. Cataldi, and Ilario Losito. "Bioactive Compounds in Waste By-Products from Olive Oil Production: Applications and Structural Characterization by Mass Spectrometry Techniques." Foods 10, no. 6 (May 29, 2021): 1236. http://dx.doi.org/10.3390/foods10061236.
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In recent years, a remarkable increase in olive oil consumption has occurred worldwide, favoured by its organoleptic properties and the growing awareness of its health benefits. Currently, olive oil production represents an important economic income for Mediterranean countries, where roughly 98% of the world production is located. Both the cultivation of olive trees and the production of industrial and table olive oil generate huge amounts of solid wastes and dark liquid effluents, including olive leaves and pomace and olive oil mill wastewaters. Besides representing an economic problem for producers, these by-products also pose serious environmental concerns, thus their partial reuse, like that of all agronomical production residues, represents a goal to pursue. This aspect is particularly important since the cited by-products are rich in bioactive compounds, which, once extracted, may represent ingredients with remarkable added value for food, cosmetic and nutraceutical industries. Indeed, they contain considerable amounts of valuable organic acids, carbohydrates, proteins, fibers, and above all, phenolic compounds, that are variably distributed among the different wastes, depending on the employed production process of olive oils and table olives and agronomical practices. Yet, extraction and recovery of bioactive components from selected by-products constitute a critical issue for their rational valorization and detailed identification and quantification are mandatory. The most used analytical methods adopted to identify and quantify bioactive compounds in olive oil by-products are based on the coupling between gas- (GC) or liquid chromatography (LC) and mass spectrometry (MS), with MS being the most useful and successful detection tool for providing structural information. Without derivatization, LC-MS with electrospray (ESI) or atmospheric pressure chemical (APCI) ionization sources has become one of the most relevant and versatile instrumental platforms for identifying phenolic bioactive compounds. In this review, the major LC-MS accomplishments reported in the literature over the last two decades to investigate olive oil processing by-products, specifically olive leaves and pomace and olive oil mill wastewaters, are described, focusing on phenolics and related compounds.
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Gobi, K., and V. M. Vadivelu. "By-products of palm oil mill effluent treatment plant – A step towards sustainability." Renewable and Sustainable Energy Reviews 28 (December 2013): 788–803. http://dx.doi.org/10.1016/j.rser.2013.08.049.
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Romero, Concepción, Eduardo Medina, Maria Antonia Mateo, and Manuel Brenes. "New by-products rich in bioactive substances from the olive oil mill processing." Journal of the Science of Food and Agriculture 98, no. 1 (July 25, 2017): 225–30. http://dx.doi.org/10.1002/jsfa.8460.
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Tapia-Quirós, Paulina, María Fernanda Montenegro-Landívar, Mònica Reig, Xanel Vecino, José Luis Cortina, Javier Saurina, and Mercè Granados. "Recovery of Polyphenols from Agri-Food By-Products: The Olive Oil and Winery Industries Cases." Foods 11, no. 3 (January 26, 2022): 362. http://dx.doi.org/10.3390/foods11030362.
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The production of olive oil and wine are two of the main agri-food economic activities in Southern Europe. They generate large amounts of solid and liquid wastes (e.g., olive pomace, olive mill wastewater, grape pomace, grape stems, wine lees, and wine processing wastewater) that represent a major environmental problem. Consequently, the management of these residues has become a big challenge for these industries, since they are harmful to the environment but rich in bioactive compounds, such as polyphenols. In recent years, the recovery of phenolic compounds has been proposed as a smart strategy for the valorization of these by-products, from a circular economy perspective. This review aims to provide a comprehensive description of the state of the art of techniques available for the analysis, extraction, and purification of polyphenols from the olive mill and winery residues. Thus, the integration and implementation of these techniques could provide a sustainable solution to the olive oil and winery sectors.
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Ginting, Simon Petrus, K. Simanihuruk, A. Tarigan, and K. R. Pond. "Nutritional Support for Small Ruminant Development Based on Oil Palm By-products." Indonesian Bulletin of Animal and Veterinary Sciences 28, no. 4 (February 21, 2019): 189. http://dx.doi.org/10.14334/wartazoa.v28i4.1919.
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Biomass by-products or plant residues from the plantation system would play a crucial role in animal production since the utilization of forages from the underneath tree crops would be less or minimal when the palm oil crop mature. By-products generated from the palm oil system vary, but in relation to the animal production they could be generally categorized into the fibrous by-products and the non-fibrous (concentrate) by-products. Palm oil mill effluent (POME) and palm kernel cake (PKC) are concentrate by-products produced during the processing of palm oil extraction which have great potency to support sheep and goat production, although limiting factors such as contamination of shell and high copper level in PKC need to be considered in their utilization as feed. The fibrous palm oil by-products include oil palm fronds (OPF) and oil palm trunk (OPT) generated from the palm crop trees and oil palm empty fruit bunch (OPEFB) and palm pressed fiber (PPF) generated from processing of fresh fruits to yield crude oil. These fibrous by-products cannot meet the metabolisable energy required for high growth rate and for lactation of sheep and goats due to low DM digestibility, low crude protein content, low fermentable carbohydrate and low level of intake. Limited inclusion level in ration should be applied for those by-products to yield an acceptable production level of sheep and goats. Pretreatments (physical, chemical, and biological) gave some improvement in their nutritional qualities, however additional cost of pretreatments need to be considered. In the future, there would be a great challenge for the utilization of those fibrous by-products as animal feed since bioconversion of lignocellulosic materials to products such as chemicals (bioethanol, sugar, and bioplastic), fuels, and organic fertilizers are receiving greater interest. Some comparative advantages of these natural wastes are their relatively low cost, renewable and widespread in nature for used in an industrial operation.
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Jianu, Călin, Ionuț Goleț, Daniela Stoin, Ileana Cocan, and Alexandra Teodora Lukinich-Gruia. "Antioxidant Activity of Pastinaca sativa L. ssp. sylvestris [Mill.] Rouy and Camus Essential Oil." Molecules 25, no. 4 (February 16, 2020): 869. http://dx.doi.org/10.3390/molecules25040869.
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In the last decade, there has been growing interest in the food industry in replacing synthetic chemicals with natural products with bioactive properties. This study’s aims were to determine the chemical composition and the antioxidant properties of the essential oil of Pastianica sylvestris. The essential oil was isolated with a yield of 0.41% (w/v) by steam distillation from the dried seeds and subsequently analysed by GC-MS. Octyl acetate (78.49%) and octyl hexanoate (6.68%) were the main components. The essential oil exhibited an excellent activity for the inhibition of primary and secondary oxidation products for cold-pressed sunflower oil comparable with butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT), which were evaluated using peroxide and thiobarbituric acid values. The antioxidant activity of the essential oil was additionally validated using DPPH radical scavenging (0.0016 ± 0.0885 mg/mL), and β-carotene-linoleic acid bleaching assays. Also, the amounts of total phenol components (0.0053 ± 0.0023 mg GAE/g) were determined.
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Slama, Houda Ben, Ali Chenari Bouket, Faizah N. Alenezi, Ameur Khardani, Lenka Luptakova, Armelle Vallat, Tomasz Oszako, Mostafa E. Rateb, and Lassaad Belbahri. "Olive Mill and Olive Pomace Evaporation Pond’s By-Products: Toxic Level Determination and Role of Indigenous Microbiota in Toxicity Alleviation." Applied Sciences 11, no. 11 (May 31, 2021): 5131. http://dx.doi.org/10.3390/app11115131.
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Diverse vegetable oils are extracted from oleagenic trees and plants all over the world. In particular, olive oil represents a strategic socio-economic branch in the Mediterranean countries. These countries use either two or three-phase olive oil extraction systems. In this work, we focus on the by-products from three-phase olive oil extraction, which are the liquid olive mill wastewater (OMW) and the solid olive mill pomace (OMP) rejected in evaporative ponds. The disposal of this recalcitrant waste poses environmental problems such as the death of different species of insects and animals. In-depth ICP-OES analysis of the heavy metal composition of OMW and OMP revealed the presence of many metals ranging from non-toxic to highly toxic. The LC-HRMS characterization of these by-products indicated the presence of several secondary metabolites harmful to humans or to the environment. Thus, we aimed to identify OMW and OMP indigenous microbiota through metagenomics. The bacterial population was dominated by the Acetobacter (49.7%), Gluconobacter (17.3%), Gortzia (13.7%) and Nardonalla (5.3%) genera. The most abundant fungal genera were Nakazawaea, Saccharomyces, Lachancea and Candida. These microbial genera are responsible for OMW, OMP and soil toxicity alleviation.
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Slominski, B. A., D. Boros, L. D. Campbell, W. Guenter, and O. Jones. "Wheat by-products in poultry nutrition. Part I. Chemical and nutritive composition of wheat screenings, bakery by-products and wheat mill run." Canadian Journal of Animal Science 84, no. 3 (September 1, 2004): 421–28. http://dx.doi.org/10.4141/a03-112.
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A study was conducted to investigate the variability in chemical and nutritive composition of wheat screenings, bakery by-products and wheat mill run used by the feed industry in Canada. On average, and in comparison to wheat (as-fed basis), the wheat screenings (16 samples) contained less starch (457 vs. 560 g kg-1; P < 0.0001), less available energy (TMEn) (13.19 vs. 13.76 MJ kg-1; P < 0.05), similar amounts of sugars (19 vs. 12 g kg-1; P > 0.05), phytate phosphorus (2.4 vs. 3.0 g kg-1; P > 0.05), and higher levels of protein (151 vs. 126 g kg-1; P < 0.0001), fat (66 vs. 12 g kg-1; P < 0.0001) and non-starch polysaccharides (NSP) (100 vs. 91 g kg-1; P < 0.01). A negative relationship (P < 0.0001) between starch and fat contents of the wheat screenings samples was noted indicating that a decrease in starch content of 20 g kg-1 would result in an increase in fat content by approximately 9 g kg-1. This inverse relationship should result in the maintenance of a relatively high content of available energy in wheat screenings. The low level of glucosinolates in wheat screenings (min. 0.66, max. 4.24 µmol g-1) indicated that canola seed rather than wild and/or condiment mustard seed was a predominant oilseed in the samples and the main contributor to the high oil content. Bakery by-products (12 samples) contained 119 g kg-1 protein (as-fed basis) , 378 g kg-1 starch, 84 g kg-1 sugars, 81 g kg-1 fat, 87 g kg-1 NSP and 14.34 MJ kg-1 TMEn. Six samples of wheat mill run were evaluated, and on an as-fed basis were found to contain 165 g kg-1 protein, 264 g kg-1 starch, 36 g kg-1 sugars, 43 g kg-1 fat, 224 g kg-1 NSP and 5.2 g kg-1 phytate phosphorus. Although high levels of phytate phosphorus were found to be present in the mill run samples, the mill run was also found to contain the highest activity of endogenous phytase (2331 units kg-1) when compared to wheat (1358 units kg-1) or wheat screenings (1348 units kg-1). The total dietary fibre content of mill run was found to be 387 g kg-1 on average and was much higher than that determined for wheat screenings (195 g kg-1) and bakery by-products (134 g kg-1). Key words: Nutritive and botanical composition, antinutritional factors, fibre, phytate
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., Ichsan, and Muda Julianda. "Utilization of High Acidity Non-Food Oils from Palm Oil Mill for Biofuel Applications." KnE Energy 1, no. 1 (November 1, 2015): 80. http://dx.doi.org/10.18502/ken.v1i1.345.
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<p>High Fatty Acids Crude Palm Oil (HFCPO) and Palm Sludge Oil (PSO) are the by-products from Palm Oil Mills. The price of HFCPO and PSO are sufficiently lower than the official price quotation of Crude Palm Oil (CPO). On the other hand, both byproducts are potential sources for biofuel applications. New patented technology that integrates extraction/esterification process from the high acidity non-food oils has been introduced. This technology is a proven technology that brings economic benefits for Palm Oil Mills that could utilize high acidity non-food oils.</p><p><strong>Keywords:</strong> HFCPO, PSO, CPO, SVO, FAME</p>
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Jayarullah and Rita Hartati. "Riplle Mill Machine Failure Analysis Using the Failure Mode and Effect Analysis (FMEA) Method at PT. Ujong Neubok In." Jurnal Inotera 8, no. 1 (February 15, 2023): 92–98. http://dx.doi.org/10.31572/inotera.vol8.iss1.2023.id219.
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Palm oil is a plantation crop of high economic value and is one of the crops producing vegetable oil and various other derivative products. Palm oil processing is one of the factors that determine the business productivity of a palm oil mill. The smoothness of the production process is greatly influenced by the reliability of the machines used. The Ripple Mill machine is a meisn that serves as a seed breaker to separate the shell from the palm kernel. This study aims to identify failures that occur in the Ripple Mill engine. This research uses the Failure Mode and Effect Analysis (FMEA) method, which is to find out and observe whether the failure rate can be analyzed or measured so as to minimize the damage / failure. Based on the results of the study, there are 5 failure risks that occur in the Ripple Mill engine with the component that has the highest value is the V-Belt, which is 294 RPN, while the one with the lowest value is the Ripple Plate Pipe with a Risk Priority Number value of 60 RPN.
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Edyson, F. Murgianto, and A. Ardiyanto. "Impact of Palm Oil By-Products Application to Earthworm Populations and Soil Chemical In Oil Palm Plantation." IOP Conference Series: Earth and Environmental Science 995, no. 1 (April 1, 2022): 012062. http://dx.doi.org/10.1088/1755-1315/995/1/012062.
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Abstract Palm oil mill has by-products from processing fresh fruit bunch such as empty fruit bunch and fruit fiber that benefits oil palm plantation. The aim of this research was to observe earthworms population and soil chemical properties after the application of palm oil by-products. This research was conducted in Pantai Harapan Estate PT Bumitama Gunajaya Agro, Central Kalimantan from July 2020 - May 2021. The organic matter was used in this study were empty bunch, empty bunch compost, and pressed fruit fiber, applied in an oil palm circle in two different soil types. The earthworms population was observed before and six months using a square sampling size 1 m x 1 m at a depth of 0,15 m. The earthworms population after six months with organic application both in dystrudepts and haplohumods range from 46 to 119 individuals/m2. Earthworms population increased 22,17% and 71,33% after six month, compared to control decrease 48,21% and 68,51% in haplohumods and dystrudepts respectively. Soil chemical properties such as C-organic, total P, and K are significantly different after organic application compared to control both in haplohumods and dystrudepts. Thus, the application of organic matter is able to increase the earthworms population and improve soil chemical properties in oil palm plantations.
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LAOUFI, Razika, Khaled BOUDJEMA, Samia LEFKIR, Narimen BENHABYLES, Ouahiba BOUCHENAK, and Karima YAHIAOUI. "Valorization and biological effect of Zizuphus jujuba Mill. vegetable oil." Nutrition & Santé 12, no. 01 (June 30, 2023): 38–47. http://dx.doi.org/10.30952/ns.12.1.5.
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Abstract Introduction. The natural plant resources are products with high added value, used in various fields for the manufacture of a wide variety of products. Objective. The purpose of this study was the physicochemical and chromatographic characterization of Ziziphus jujuba seeds vegetable oil, and the evaluation of their antioxidant and anti-inflammatory activity. Material and methods. Seeds oil extraction was done by soxhlet. Fatty acid content was determined by gas chromatography (GPC). Organoleptic and physicochemical characteristics were determined, and antioxidant activity was evalua-ted by diphenyl-picryl-hydrazyl (DPPH) test and -carotene bleaching. Anti-inflam-matory activity was essayed using carrageenan-induced plantar edema model in mice. Results. Extracted seeds oil had an extraction yield of 3.4%. GPC characterization sho-wed the presence of 12 fatty acids with a predominance of oleic acid (47.02%), and linoleic acid (37.40%). Physicochemical parameters of Ziziphus jujuba seeds oil showed an acidity of 2.05%, a saponification value of 198.17 mg KOH/mL, and refractive index of 1.471±0.00. This oil expressed a significant antiradical activity for the DPPH test, and low for that of β-carotene. In vivo study of edema induction in mice showed that oil had a maximum effective effect in inhibiting oedema (55.89±0.03%), at the first hour, compared to Diclofenac (19.88±0.12%), at the same hour. Conclusion. These results highlight the fatty acids richness of Ziziphus jujuba seeds oil with antioxidant and anti-inflammatory effects. These properties make it possible to predict its use in biotech-nology and cosmetology. [Introduction. Les ressources naturelles végétales sont des produits à forte valeur ajoutée, utilisés dans divers domaines pour la fabrication d’une large variété de produits. Objectif. Le présent travail a pour but la caractérisation physico-chimique et chromatographique de l’huile végétale des graines de Ziziphus jujuba Mill., et l’évaluation de leur activité antioxydante et anti-inflammatoire. Matériel et méthodes. L’huile des graines extraite par soxhlet est caractérisée sur le plan organoleptique et physicochimique. La teneur en acides gras est déterminée par une analyse chromato-graphique en phase gazeuse (CPG). L’activité antioxydante est évaluée par le test diphe-nyl-picryl-hydrazyl (DPPH) et le test de blanchiment. L’activité anti-inflammatoire est déterminée à l’aide du modèle de l’œdème plantaire induit chez la souris par la carra-génine. Résultats. L’huile présente un rendement d’extraction de 3,14%. La caracté-risation par la CPG montre la présence de 12 acides gras avec une prédominance de l’acide oléique (47,02%) et l’acide linoléique (37,40%). Les paramètres physico-chimi-ques ont montré une acidité de 2,05%, un indice de saponification de 198,17mg KOH/mL, un indice de réfraction de 1,471±0,00. L’huile végétale testée exprime une activité anti-radicalaire importante pour le test de DPPH et forte pour celui de β-carotène. L’induction d’œdème chez les souris a montré un effet efficace maximal de l’huile dans l’inhibition de l’œdème à la première heure, par rapport au Diclofénac à la même heure. Conclusion. Les résultats de cette étude font ressortir la richesse de l’huile des graines de Ziziphus jujuba en acides gras dotés d’un effet antioxydant et anti-inflammatoire. Ces propriétés permettent de prévoir son utilisation en biotechnologie et en cosmétologie.]
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Ayodele, Bamidele V., and Chin Kui Cheng. "Biorefinery for the Production of Biodiesel, Hydrogen and Synthesis Gas Integrated with CHP from Oil Palm in Malaysia." Chemical Product and Process Modeling 11, no. 4 (December 1, 2016): 305–14. http://dx.doi.org/10.1515/cppm-2015-0050.
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Abstract Malaysia is presently the world’s largest exporter of palm oil with total production of 19.22 million tonnes of crude palm oil (CPO) in 2013. Aside CPO, by-products such as empty fruit bunch (EFB), palm kernel shell (PKS), palm kernel oil (PKO), palm kernel cake (PKC) and pressed palm fibres (PPF) are produced from the palm oil mills. These biomasses can be used as potential feedstock for the production of biofuels, biogas and bioelectricity. One of the ways to fully harness the potentials of these biomasses is by employing the biorefinery concepts where all the products and by-products from oil palm are utilized for production of valuable bio-products. In this study, technological feasibility of biorefinery for the production of biodiesel, hydrogen, Fischer-Tropsch liquids (FTLs) integrated with combined heat and power (CHP) generation was investigated. Flowsheet was designed for each of the processes using Aspen HYSYS® v 8.0. Material balance was performed on a palm oil mill processing 250 tonnes per year of fresh fruit palm (FFP). Results from the material balance shows that 45.1 tonnes of refined bleached deodorized palm oil (RDBPO) and 52.4 tonnes of EFB were available for the production of biodiesel, hydrogen, FTLs and the CHP generation. The annual plant capacity of the biodiesel production is estimated to be 26,331.912 tonnes. The overall energy consumption of the whole process was estimated to be 36.0 GJ/h. This energy demand was met with power generated from the CHP which is 792 GJ/h leaving a surplus of 756 GJ/h that can be sold to the grid. The process modelling and simulation of the biorefinery process shows technological feasibility of producing valuable products from oil palm.
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Nuryadi, A. P., A. Raksodewanto A, H. Susanto, and Y. Peryoga. "Analysis on the feasibility of small-scale biogas from palm oil mill effluent (POME) – Study case: Palm oil mill in Riau-Indonesia." MATEC Web of Conferences 260 (2019): 03004. http://dx.doi.org/10.1051/matecconf/201926003004.
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The province of Riau has the most significant palm oil plantation in Indonesia which has the potential of the palm oil mill effluent (POME). One way to use this liquid waste is by the anaerobic process into biogas to generate electricity. Based on the assumption of calculated liquid waste can produce biogas about 538 m3 / hour or equal to 4,600 MJ / hour potentially generate electricity about 1 MW. This paper discusses the scheme of the POME Biogas Power Plant project which benefits the palm oil mill which is Built-operate-transfer (BOT) with a duration of 15 years selected as a reference. With this duration obtained IRR of 17.47% higher than at WACC of 15.61% and a payback period of 5.63 years. The 15-year duration gives Investor resilience in case of an increase of loan interest rate to 13% during the repayment period. Also, the use of alternative schemes that may be pursued by biogas products from cleaned digesters is then used as gas fuel to operate diesel generators. Plant Alternative for BOT duration for five years. The project is very feasible to be implemented with a very high IRR (37.56%) score when compared to WACC (15.61%).
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Dini, Irene, Giulia Graziani, Francesca Luisa Fedele, Andrea Sicari, Francesco Vinale, Luigi Castaldo, and Alberto Ritieni. "Effects of Trichoderma Biostimulation on the Phenolic Profile of Extra-Virgin Olive Oil and Olive Oil By-Products." Antioxidants 9, no. 4 (March 27, 2020): 284. http://dx.doi.org/10.3390/antiox9040284.
Full textAbstract:
Olive trees are grown on five continents. Fertilization of fields, pest control management, olive leaves, olive pomaces, and olive mill wastewaters have a substantial environmental impact. It is possible to reduce this problem by using organic products to cultivate and decrease olive oil processing waste by recovering the bioactive molecules. In this work, the effects of biostimulation, with beneficial microbes belonging to the Trichoderma genera, and with Trichoderma secondary metabolites (6PP and the HA) were evaluated on the phenolic profile and the antioxidant potential of extra-virgin olive oil (EVOO) and olive leaf samples to make them more commercially attractive as a source of phytochemicals useful for the pharmaceutical, cosmetic, and food industries. Phenolics were identified and quantified by a spectrometer method using Q Exactive Orbitrap UHPLC-MS/MS (Ultra High Pressure Liquid Chromatography). Antioxidant activity was evaluated spectrophotometrically by the DPPH test. The use of Trichoderma strains, 6PP (6-Pentyl-α-Pyrone) and HA (Harzianic Acid), was demonstrated as an effective strategy to increase the leaves’ economic value as a source of phytochemicals (flavonoids, lignans, and oleuropein) useful for food, pharmaceutical, and cosmetic industries.
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Sar, Taner, and Meltem Yesilcimen Akbas. "Antimicrobial Activities of Olive Oil Mill Wastewater Extracts against Selected Microorganisms." Sustainability 15, no. 10 (May 17, 2023): 8179. http://dx.doi.org/10.3390/su15108179.
Full textAbstract:
Discovering eco-friendly alternatives to synthetic chemicals has become an increasingly popular area of research. Natural products are now in the spotlight for their potential use as replacements for synthetic chemicals. To maximize the benefits of these natural products, it is important to use efficient extraction methods, especially from agroindustrial waste. Olive oil mill wastewater (OOMW) is a byproduct of the olive oil production process and is considered a pollutant; however, OOMW contains a wide range of phenolic compounds that have proven antimicrobial properties. This study investigates the extraction of these compounds from OOMW, with the aim of determining their potential antimicrobial activities against several bacterial strains and fungi, including Bacillus spizizenii, Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella aerogenes, Streptococcus uberis, Enterococcus faecalis, and Candida albicans. The OOMW extracts (OEs) were prepared by using three different solvents: ethyl acetate, ethanol, and methanol. The highest total phenolic contents (4.03 g, GAE/L) and the strongest antibacterial activity were obtained with methanol extraction. All OEs showed no antifungal activity against C. albicans. OEs, particularly methanol extracts of OOMW, can be used as bioactive substances in various industries as nutraceuticals and food ingredients, respectively.
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Jebabli, Haifa, Houda Nsir, Amani Taamalli, Ibrahim Abu-Reidah, Francisco Javier Álvarez-Martínez, Maria Losada-Echeberria, Enrique Barrajón Catalán, and Ridha Mhamdi. "Industrial-Scale Study of the Chemical Composition of Olive Oil Process-Derived Matrices." Processes 8, no. 6 (June 17, 2020): 701. http://dx.doi.org/10.3390/pr8060701.
Full textAbstract:
The effect of the industrial process and collecting period on produced olive oil and by-products was evaluated. Obtained results showed significant variations for the majority of quality indices before and after vertical centrifugation between all samples from the three collecting periods. All samples were rich in monounsaturated fatty acid: Oleic acid (C18:1) with a maximum of 69.95%. The total polyphenols and individual phenolic compounds varied significantly through the extraction process, with a significant variation between olive oil and by-products. Notably, the percentage of secoiridoids and their derivatives was significant in paste and olive oil, highlighting the activity of many enzymes released during the different extraction steps. Regarding antioxidant capacity, the most remarkable result was detected in olive oil and olive mill wastewater samples.
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Caffaz, S., C. Caretti, M. Morelli, C. Lubello, and E. Azzari. "Olive mill wastewater biological treatment by fungi biomass." Water Science and Technology 55, no. 10 (May 1, 2007): 89–97. http://dx.doi.org/10.2166/wst.2007.311.
Full textAbstract:
Olive oil extraction is one of the most important traditional food industries in the Mediterranean region, especially in Italy. In addition to olive oil, this industry produces by-products, in particular olive mill wastewaters (OMWs) and olive husks, which represent a serious environmental problem. OMWs can be rarely treated in a municipal WWTP, using conventional wastewater treatments. A novel biological process has to be considered in order to treat OMWs. Literature data show that yeasts and different kinds of fungi are able to reduce both the organic and the phenolic content of the OMW. The present work is aimed at investigating the growth of a biomass rich in fungi in a batch reactor filled with OMW and its capacity to degrade the organic and phenolic load. The aerobic OMW degradation obtained using this biomass reached a COD and TP removal efficiency of 86 and 70%, respectively. Respirometric tests have been carried out in order to measure the biomass activity on different substrates: OMW and phenolic compounds (gallic and p-coumaric acids). The polyphenolic biodegradation efficiency of fungi biomass was higher than the one of a non-acclimated activated sludge biomass. Fungi biomass was able to completely degrade pure phenolic compounds.
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Benincasa, Cinzia, Chiara La Torre, Pierluigi Plastina, Alessia Fazio, Enzo Perri, Maria Cristina Caroleo, Luca Gallelli, Roberto Cannataro, and Erika Cione. "Hydroxytyrosyl Oleate: Improved Extraction Procedure from Olive Oil and By-Products, and In Vitro Antioxidant and Skin Regenerative Properties." Antioxidants 8, no. 7 (July 20, 2019): 233. http://dx.doi.org/10.3390/antiox8070233.
Full textAbstract:
Recently, we identified hydroxytyrosyl oleate (HtyOle) in the by-products of olive oil, pomace and olive mill waste water (OMWW). Herein, we report that HtyOle is more accurately quantified by extracting the phenolic fraction from both matrices by using aqueous methanol (80%). By applying this method, HtyOle was also detected in extra virgin olive oil (EVOO). Since olive oil is used in the preparation of many cosmetic formulations, we explored the antioxidant capacity of HtyOle in human keratinocytes. Formation of reactive oxygen species (ROS) and malondialdehyde (MDA), as well as activity of Glutathione-S-transferase (GST) and superoxide dismutase (SOD) were decreased by HtyOle. In addition to that, microRNAs (miRs) involved in both redox status balance and skin regeneration potential were also tested. The following miRs, hsa-miR-21 and hsa-miR-29a, were increased while has-miR-34a was not affected by HtyOle.
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Jafri, N. H. S., D. N. Jimat, N. F. M. Azmin, S. Sulaiman, and Y. A. Nor. "The potential of biomass waste in Malaysian palm oil industry: A case study of Boustead Plantation Berhad." IOP Conference Series: Materials Science and Engineering 1192, no. 1 (November 1, 2021): 012028. http://dx.doi.org/10.1088/1757-899x/1192/1/012028.
Full textAbstract:
Abstract The oil palm industry is known as the primary producer of biomass in Malaysia. The massive production of oil palm biomass has resulted in a significant waste disposal problem. This study aims to assess the potential of waste derived from oil palm plantations and processing mills to be transformed into value-added products for various applications. The study was conducted on three oil palm estates managed by Boustead Rimba Nilai Berhad using data on the generation rates of fresh fruit bunches (FFB), crude palm oil (CPO), and oil palm biomass waste from 2018 to 2020. The availability of FFB, CPO, empty fruit bunches (EFB) and excess fibers, and palm oil mill effluents (POME) in 2030 was predicted using a forecasting approach, with trend analysis as the tool of choice. From 2018 to 2020, the output of FFB, EFB and excess fibers, as well as POME grew by 16%, 14%, 23%, and 14% respectively. Based on trend analysis, the projection of FFB, CPO, EFB and excess fibers, and POME outputs in 2030 is expected to be 80%, 56%, 92%, and 56% respectively, which are greater than the figures recorded in 2020. The state of the palm oil industry in Malaysia was described in this study and also highlighted the potential of oil palm biomass in various industries and as a source of green energy. Oil palm biomass can be commercialized in a wide range of value-added products.
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Von Ulardt, Isis, Marlen Springer, and Rafael Valbuena. "Structural characteristics and functional properties of fiber-rich by-products of white cabbage modified by high-energy wet media milling." Food Science and Applied Biotechnology 3, no. 1 (March 19, 2020): 85. http://dx.doi.org/10.30721/fsab2020.v3.i1.89.
Full textAbstract:
The recovery of residues and by-products of the food industry plays an important role in terms of sustainable management. For this reason, the aim of this study was to analyse the effect of wet milling parameters on dietary fiber concentrates of white cabbage by products or, more precisely, the stalks of cabbage. The input of hydraulic shear-energy during wet milling process leads to a partial modification of the structure of fiber components to obtain compounds with high water- and oil-binding properties. Furthermore, the wet milling parameters affect the functional properties of the fiber concentrates. A mathematical model was developed which relates the functional properties to the parameters of the colloid mill such as slurry concentration, milling time, agitation speed and particle size distribution. A slurry of the grounded material is forced into the milling gap. Grinding is autogenous as a result of collisions between rotating particles. All of the material in the process stream is being grounded finer than the gap setting and grinding can be optimized by adjusting mill operating parameters. The identification of the relations between milling parameters and functional properties is necessary in order to comprehend the processing characteristics of the material in the context of fiber enriched food products manufacturing.
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Wang, Jia-Shui, An-Bang Wang, Xiao-Ping Zang, Lin Tan, Bi-Yu Xu, Hai-Hong Chen, Zhi-Qiang Jin, and Wei-Hong Ma. "Physicochemical, functional and emulsion properties of edible protein from avocado (Persea americana Mill.) oil processing by-products." Food Chemistry 288 (August 2019): 146–53. http://dx.doi.org/10.1016/j.foodchem.2019.02.098.
Full text
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Verma, Swaroop, Chandra Padalia, and Amit Chauhan. "Chemical investigation of the volatile components of shade-dried petals of damask rose (Rosa damascena Mill.)." Archives of Biological Sciences 63, no. 4 (2011): 1111–15. http://dx.doi.org/10.2298/abs1104111v.
Full textAbstract:
Roses are always appreciated because of their inimitable aroma, many uses and of course their beauty. In addition to the different damask rose (Rosa damascena Mill.) products (oil, water, concrete, absolute, gulkand etc.), its dried petals are also used for various health purposes. The hydrodistilled volatile oil and water of shade-dried damask rose petals were investigated by GC and GC-MS. The predominant components of tThe essential oil and rose water were aliphatic hydrocarbons (56.4 and 46.3%), followed by oxygenated monoterpenes (14.7 and 8.7%). The main aliphatic hydrocarbons of the essential oil and rose water were heneicosane (19.7 and 15.7%), nonadecane (13.0 and 8.4%), tricosane (11.3 and 9.3%) and pentacosane (5.3 and 5.1%) while the content of 2-phenyl ethyl alcohol was 0.4% and 7.1% in the essential oil and rose water, respectively. The chemical composition of the dried rose petal volatiles is quite different from fresh flower volatiles.
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Bahrun, Mohd Hardyianto Vai, Awang Bono, Nur Kamaliyah Dzilrazman, and Zykamilia Kamin. "Recovery of Minor Palm Oil Compounds Using Packed Bed Adsorption Column." Jurnal Bahan Alam Terbarukan 9, no. 1 (June 20, 2020): 21–29. http://dx.doi.org/10.15294/jbat.v9i1.23461.
Full textAbstract:
Carotene and tocopherol are valuable products that exist as minor compounds in palm oil and mostly extracted out during many stages of palm oil processing. Hence, most of it ended up in wastewater or palm oil mill effluent (POME). Fortunately, adsorption is potentially one of the most efficient method as compared to the others. In fact, it is widely studied in laboratory scale, in order to obtain equilibrium data for the steady state system. However, industrial practices are mostly operated in unsteady state in a continuous manner. Consequently, this study is executed to design a recovery process of one of the minor compounds in palm oil mill effluent (POME), which is carotene, using silica gel. It aims to predict the dynamic adsorption of recovery of minor compounds from palm oil mill effluent based on available equilibrium data, investigate the effects of dynamic and physical properties of the system towards the process by analyzing the breakthrough curve and study the feasibility of the scale up process by performing a sensitivity analysis on the system. Then, a base simulation was prepared by using available equilibrium data. Operating and design parameters such as, bed height, inlet flowrate and concentration were manipulated. Consistent with previous packed column studies, increase flow and concentration will reduce the time required for the column to achieve saturation, while increase bed height effects were vice versa. Finally, the last objective to achieve was to study the practicality of the packed bed column and perform a sensitivity on assumptions and predictions such as predicted mass transfer coefficient and isotherm model. It is proven that the selection of isotherm model and prediction in coefficient did not pose a large impact to the breakthrough curve and the average time required for the column of 1.5 m tall and 0.8 in diameter, to reach breakthrough time is 1.7 days. Hence, it can be concluded that adsorption technology using silica gel as its adsorbent can be applied is recovering minor compounds in palm oil mills.
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Guo, Xiangyang, and Pu Wang. "Aroma Characteristics of Lavender Extract and Essential Oil from Lavandula angustifolia Mill." Molecules 25, no. 23 (November 26, 2020): 5541. http://dx.doi.org/10.3390/molecules25235541.
Full textAbstract:
Lavender and its products have excellent flavor properties. However, most studies focus on the aroma profiles of lavender essential oil (LEO). The volatiles in lavender extracts (LEs), either in volatile compositions or their odor characteristics, have rarely been reported. In this study, the odor characteristics of LEs and LEO were comprehensively investigated by gas chromatography-mass spectrometry (GC-MS), coupled with sensory evaluation and principal chemical analysis (PCA). In addition, the extraction conditions of lavender extracts from inflorescences of Lavandula angustifolia Mill. were optimized. Under the optimal conditions of extraction, twice with 95% edible ethanol as the solvent, the LEs tended to contain the higher intensity of characteristic floral, herbal and clove-like odors as well as higher scores of overall assessment and higher amounts of linalool, linalool oxides I and II, linalyl acetate, lavandulyl acetate and total volatiles than LEO. PCA analysis showed that there were significant differences on the odor characteristics between LEO and LEs. The LEO, which was produced by steam distillation with a yield of 2.21%, had the lower intensity of floral, clove-like, medicine-like, pine-like and hay notes, a lower score of overall assessment and lower levels of linalool oxides I and II, linalyl acetate, lavandulyl acetate and total volatiles compared with LEs, whereas the relative contents of linalool and camphor in LEO were significantly higher than that in LEs. Furthermore, the earthy, green and watery odors were only found in LEO. Concerning the odor characteristics and volatile compositions, the LEs had better odor properties than LEO. These results provided a theoretical basis for the industrial preparation of lavender-related products.
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Muthusamy, Khairunisa, and Zamri Nurazzimah. "POFA: A Potential Partial Cement Replacement Material in Oil Palm Shell Lightweight Aggregate Concrete." Applied Mechanics and Materials 567 (June 2014): 446–50. http://dx.doi.org/10.4028/www.scientific.net/amm.567.446.
Full textAbstract:
Today, the necessity of environmental awareness and enforcement is more demanding and crucial than ever before. Environmental protection encompasses not only pollution but also sustainable development and conservation of natural resources and the eco-system. As a conclusion, protection and preservation of environment is still a pressing issue. This issue on environmental preservations and sustainability all over the world has lead to innovations of new material using by-products generated from various sectors such as palm oil industry. One of the potential recycle materials from palm oil industry is palm oil fuel ash which contains siliceous compositions and reacted as pozzolans to produce a stronger and denser concrete. Palm oil fuel ash (POFA) is by-product obtained by burning of fibers, shells and empty fruit bunches as fuel in palm oil mill boilers. Apart from POFA, oil palm shell (OPS), which also from oil palm waste has been used as lightweight aggregates resulting from never ending research conducted. In this investigation, these two types of waste were collected from the same palm oil mills in Kuantan, Malaysia and were both utilized inside lightweight aggregate concrete. By incorporating POFA and OPS as partial cement and coarse aggregate replacement, lightweight aggregate concrete with 35 MPa can be produced and is also significantly higher than control OPS concrete.
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Ernita, Tri, Gamindra Jauhari, and Tri Maiyuni Helia. "Analisis Kehilangan Minyak (Oil Losses) Pada Proses Pengolahan CPO (Crude Palm Oil) Dengan Metode SPC (Statistical Proces Control) Studi Kasus di PT.Pabrik Nusantara (PTPN) 6 Solok Selatan." SAINTEK: Jurnal ilmiah Sains dan Teknologi Industri 2, no. 1 (December 14, 2018): 15. http://dx.doi.org/10.32524/saintek.v2i1.417.
Full textAbstract:
In every manufacturing and service companies have their own provisions in running the company. Likewise with PTPN VI Solok Selatan, this company is managed by the state (SOE/ STATE-OWNED ENTERPRISES) which produces two types of products namely Crude Palm Oil (CPO) and Karnel (core). In its production process, the PTPN 6 Solok Selatan palm oil mill attempts to optimize the yield and improve product quality. Thus the South Solok oil palm plant is certainly trying to lose oil (oil losses) occur to a minimum. Quality control is statistically performed using statistical tools contained in statistical proces control (SPC). Statistical Process Control (SPC) is an analytical decision-making method that shows a process running well or not (Zagloel
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Elystia, Shinta, Vonny Meidina Rizani, and Sri Rezeki Muria. "Penyisihan Polutan pada Palm Oil Mill Effluent (POME) Menggunakan Konsorsium Mikroalga-Bakteri dengan Sistem High Rate Algae Reactor (HRAR)." JURNAL SAINS TEKNOLOGI & LINGKUNGAN 7, no. 1 (June 25, 2021): 146–59. http://dx.doi.org/10.29303/jstl.v7i1.213.
Full textAbstract:
Palm oil mills in addition to producing crude palm oil also produce by-products in the form of Palm Oil Mill Effluent (POME). POME contains high amounts of organic ingredients and pollutants. One method that can be applied to treat POME is the High Rate Algae Reactor (HRAR) System. The HRAR system uses microalgae-bacterial consortium that has better performance in removing pollutants in POME and increasing the growth of microorganisms. This research aim by determining the effect of microalgae suspension concentration in the HRAR system towards the removal efficiency of Chemical Oxygen Demand (COD) and total nitrogen. The research was conducted in batch in the HRAR system that equipped with a paddle wheel, by variations of microalgae suspension concentration as 0; 10; 15; 20; and 25 (% v/v). The research was carried out for 7 days and used the sun as a source of light. Based on the research results, 25% of microalgae suspension concentration has the highest microalgae cell density, was 6,34 x 106 cells/mL and showed the best removal efficiency of COD and total nitrogen, were 78.79% and 80.37%.
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Benaddi, Rabia, Abdelillah Bouriqi, Faissal Aziz, Khalifa El harfi, and Naaila Ouazzani. "Treatment of Olive Mill Waste Water by Adsorption on Hydroxyapatite-Sodium Alginate Composite." International Journal of Environmental Science and Development 13, no. 6 (2022): 251–56. http://dx.doi.org/10.18178/ijesd.2022.13.6.1401.
Full textAbstract:
The olive sector and in particular that of the extraction of olive oil requires large quantities of water, therefore obtaining olive oil generates two by-products, one liquid (OMWW) and the other solid (pomace). The OMWW are the aqueous phase resulting from the crushing of olives, causing worrying environmental problems in particular that it contains large quantities of organic compounds especially phenols compounds which cause many environmental problems such as water pollution. Therefore, the treatment of OMWW is very necessary. The purpose of this work was the investigation of the efficiency of hydroxyapatite-Sodium alginate composite for the adsorption of phenolic compounds, which are contained in OMMW. It showed promising results in reducing the phenol compounds and organic matter by 60% and 64% respectively and the reduction of Hydroxytyrosol and Tyrosol by 100% and 38% respectively, which are the most predominant polyphenols in OMWW. For second cycle of adsorption-desorption, the adsorbent lost slightly its adsorption capacity, reduction rate of phenol compounds and organic matter pass from 64% and 60% to 45% and 50% respectively.
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Pampuri, Alessia, Andrea Casson, Cristina Alamprese, Carla Daniela Di Mattia, Amalia Piscopo, Graziana Difonzo, Paola Conte, et al. "Environmental Impact of Food Preparations Enriched with Phenolic Extracts from Olive Oil Mill Waste." Foods 10, no. 5 (April 29, 2021): 980. http://dx.doi.org/10.3390/foods10050980.
Full textAbstract:
Reducing food waste as well as converting waste products into second-life products are global challenges to promote the circular economy business model. In this context, the aim of this study is to quantify the environmental impact of lab-scale food preparations enriched with phenolic extracts from olive oil mill waste, i.e., wastewater and olive leaves. Technological (oxidation induction time) and nutritional (total phenols content) parameters were considered to assess the environmental performance based on benefits deriving by adding the extracts in vegan mayonnaise, salad dressing, biscuits, and gluten-free breadsticks. Phenolic extraction, encapsulation, and addiction to the four food preparations were analyzed, and the input and output processes were identified in order to apply the life cycle assessment to quantify the potential environmental impact of the system analyzed. Extraction and encapsulation processes characterized by low production yields, energy-intensive and complex operations, and the partial use of chemical reagents have a non-negligible environmental impact contribution on the food preparation, ranging from 0.71% to 73.51%. Considering technological and nutritional aspects, the extraction/encapsulation process contributions tend to cancel out. Impacts could be reduced approaching to a scale-up process.
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Wang, Mei, Ping Yu, Amar G. Chittiboyina, Dilu Chen, Jianping Zhao, Bharathi Avula, Yan-Hong Wang, and Ikhlas A. Khan. "Characterization, Quantification and Quality Assessment of Avocado (Persea americana Mill.) Oils." Molecules 25, no. 6 (March 24, 2020): 1453. http://dx.doi.org/10.3390/molecules25061453.
Full textAbstract:
Avocado oil is prized for its high nutritional value due to the substantial amounts of triglycerides (TGs) and unsaturated fatty acids (FAs) present. While avocado oil is traditionally extracted from mature fruit flesh, alternative sources such as avocado seed oil have recently increased in popularity. Unfortunately, sufficient evidence is not available to support the claimed health benefit and safe use of such oils. To address potential quality issues and identify possible adulteration, authenticated avocado oils extracted from the fruit peel, pulp and seed by supercritical fluid extraction (SFE), as well as commercial avocado pulp and seed oils sold in US market were analyzed for TGs and FAs in the present study. Characterization and quantification of TGs were conducted using UHPLC/ESI-MS. Thirteen TGs containing saturated and unsaturated fatty acids in avocado oils were unambiguously identified. Compared to traditional analytical methods, which are based only on the relative areas of chromatographic peaks neglecting the differences in the relative response of individual TG, our method improved the quantification of TGs by using the reference standards whenever possible or the reference standards with the same equivalent carbon number (ECN). To verify the precision and accuracy of the UHPLC/ESI-MS method, the hydrolysis and transesterification products of avocado oil were analyzed for fatty acid methyl esters using a GC/MS method. The concentrations of individual FA were calculated, and the results agreed with the UHPLC/ESI-MS method. Although chemical profiles of avocado oils from pulp and peel are very similar, a significant difference was observed for the seed oil. Principal component analysis (PCA) based on TG and FA compositional data allowed correct identification of individual avocado oil and detection of possible adulteration.
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Dounavis, Athanasios Sotirios. "Techno-economic Analysis of the Olive Oil Mills Waste Valorisation for Energy Production: A Case Study of Corfu." Environmental Research, Engineering and Management 75, no. 4 (December 20, 2019): 18–29. http://dx.doi.org/10.5755/j01.erem.75.4.23072.
Full textAbstract:
Olive oil production in Greece is undoubtedly linked to its history and tradition.
However, large quantities of by-products are produced (with the olive oil production)
which are harmful to the environment. Those environmental problems are a result
of the chemical composition of the waste and its high organic load. This intense
phenomenon has led to the exploration and development of methods and technolog0ies
for the treatment of olive mill waste. One of the methods used is the biogas production
through anaerobic digestion and its subsequent disposal for energy production.
This method could be particularly appealing to the Greek islands so that there is
their energy dependence from the mainland. A typical example is the island of Corfu
as the problem of waste from olive oil mills is intense and its energy demands are
increased. Therefore, energy production via anaerobic digestion could greatly
contribute to overcoming the current situation. The purpose of this study is to
design a central power plant, which is fed by biogas, produced by the anaerobic
digestion of the waste oil mills in Corfu and to present various economic data
regarding its construction and operation.
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., Ernita, Gamindra Jauhari, and Tri Maiyuni Helia. "Analisis Kehilangan Minyak (Oil Losses) Pada Proses Pengolahan CPO (Crude Palm Oil) Dengan Metode SPC (Statistical Proces Control) Studi Kasus di PT. Pabrik Nusantara (PTPN) 6 Solok Selatan." SAINTEK : Jurnal Ilmiah Sains dan Teknologi Industri 2, no. 1 (March 22, 2021): 15–23. http://dx.doi.org/10.32524/saintek.v2i1.131.
Full textAbstract:
n every manufacturing and service companies have their own provisions in running the company. Likewise with PTPN VI Solok Selatan, this company is managed by the state (SOE/STATE-OWNED ENTERPRISES) which produces two types of products namely Crude Palm Oil (CPO) and Karnel (core). In its production process, the PTPN 6 Solok Selatan palm oil mill attempts to optimize the yield and improve product quality. Thus the South Solok oil palm plant is certainly trying to lose oil (oil losses) occur to a minimum. Quality control is statistically performed using statistical tools contained in statistical proces control (SPC). Statistical Process Control (SPC) is an analytical decision-making method that shows a process running well or not (Zagloel & Nurcahyo, 2013). Statistical Process Control (SPC) is used to monitor the consistency of processes used for the manufacture of designed products with the aim of obtaining controlled processes. Comparison of oil losses against normal conditions that exceeded the standard inthe period July to December 2017, tankos of 0.77%, press 0.12%, nut by 0.02% and fat fit of 0.08%. Of the four measurements there is one measurement that is beyond the control limits that is on the nut, which resulted in oil losses there are four factors that influence the factors of HR, Machinery, Materials and Methods.
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Nursanti, Ida. "TANGGAP TANAMAN JAGUNG TERHADAP PEMBERIAN PUPUK PRODUK SAMPING CAIR PABRIK KELAPA SAWIT PLUS ZEOLIT." Jurnal Media Pertanian 1, no. 2 (November 10, 2016): 62. http://dx.doi.org/10.33087/jagro.v1i2.17.
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AbstractLiquid by product of palm oil pruduct Mills as an organic fertilizer to meet crop nutrient needs of corn and increase fertilizer efficiency. Utilization of zeolite can improve the quality of organic fertilizers, soil conditioners and water backup controller. The study aims to determine the effect of fertilizer of liquid product of palm oil mill plus zeolite on the growth of corn and determines that the liquid product of palm oil mill as a ferlizer plus zeolite can better influence the growth of corn plants that without zeolite. The study lasted for three months. Research using a completely randomized design, with 3 levels of treatment is treatment Side Liquid Product Mills useness. The treatments were without Side Liquid Product Mills plus zeolite (P0), Side Liquid Product Mills without zeolite 1000 ml (P1), Side Liquid Product Mills 1000 ml plus zeolite 10% (P2). Each treatment was repeated 3 times so that there are 3 x 3 = 9 experimental units. The results showed that the liquid manure of by products of palm oil mill plus zeolite may affect plant growth significantly, especially in the corn plant height, weight of wet canopy, root wet weight, levels of leaf N and P content of leaves. Liquid byproduct of palm oil mills plus 10% zeolite 1000 ml dose of plant can better influence the growth of corn plants. Keywords : Side Liquid Product Mills, Zeolit, Corn AbstrakProduk Samping Cair Pabrik Kelapa Sawit (PSCPKS) sebagai pupuk organik dapat memenuhi kebutuhan unsur hara tanaman jagung dan meningkatkan efisiensi pemupukan. Pemanfaatan zeolit dapat meningkatkan kualitas pupuk organik, soil conditioner dan pengontrol cadangan air. Penelitian bertujuan untuk mengetahui pengaruh pemberian pupuk produk samping cair pabrik kelapa sawit plus zeolit terhadap pertumbuhan tanaman jagung dan menentukan bahwa pupuk produk samping cair pabrik kelapa sawit plus zeolit dapat lebih baik mempengaruhi pertumbuhan tanaman jagung dari pada pupuk produk samping cair pabrik kelapa sawit tanpa zeolit. Pelaksanaan penelitian berlangsung selama 3 bulan. Penelitian menggunakan Rancangan Acak Lengkap (RAL), dengan 3 taraf perlakuan merupakan perlakuan pemberian PSCPKS. Perlakuan yang diteliti adalah : tanpa PSCPKS plus zeolit (P0), PSCPKS tanpa zeolit 1000 ml (P1), PSCPKS 1000 ml plus zeolit 10% (P2). Setiap perlakuan diulang 3 kali sehingga terdapat 3 x 3 = 9 unit percobaan. Hasil penelitian menunjukkan bahwa pupuk produk samping cair pabrik kelapa sawit plus zeolit dapat mempengaruhi pertumbuhan tanaman jagung secara signifikan terutama pada tinggi tanaman, bobot basah tajuk, bobot basah akar, kadar N daun dan kadar P daun. Produk samping cair pabrik kelapa sawit plus zeolit 10% dosis 1000 ml tanaman-1 dapat lebih baik mempengaruhi pertumbuhan tanaman jagung. Kata kunci : PSCPKS, Zeolit, Jagung
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Crișan, Ioana, Andreea Ona, Dan Vârban, Leon Muntean, Rodica Vârban, Andrei Stoie, Tania Mihăiescu, and Adriana Morea. "Current Trends for Lavender (Lavandula angustifolia Mill.) Crops and Products with Emphasis on Essential Oil Quality." Plants 12, no. 2 (January 12, 2023): 357. http://dx.doi.org/10.3390/plants12020357.
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Lavender is in the research spotlight due to its increasing economic importance, while market demand is expected to continue to grow. Among the hundreds of essential-oil-bearing plants, Lavandula angustifolia Mill. remains one of the most valuable. This paper explores the lavender chain timeline from crop to products, examining the expanding knowledge on the characteristics, phytochemical profile and functional potential of lavender that could lead to new products and uses. Lavender crops can be expanded without competing for productive land, instead using marginal, contaminated or unproductive land. A novel cultivation trend proposes leveraging agri-background biodiversity, arbuscular mycorrhiza and the natural enemies of pests for healthy crops. Together with breeding efforts targeting highly performant genotypes with complex volatile profiles coupled with resistance to specific biotic (particularly Phytoplasma) and abiotic (salt, heavy metals) stressors, industry could have a steady supply of high-quality raw material. Besides the expansion of the uses of essential oil in cosmetics, pharmaceuticals, food and environmental and agri-applications, novel channels have appeared for the use of the solid by-product, which is rich in polyphenols and polysaccharides; these channels have the potential to create additional streams of value. The stabilization and optimization of techno-functional delivery systems through the encapsulation of essential oil can extend shelf-life and enhance biological activity efficiency.
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Cappelli, Alessio, Nicola Menditto, and Enrico Cini. "Innovative Olive Tree Leaves Shredder Prototype for the Valorization of Wasted Leaves: An Application to High-Quality Compost Production." Sustainability 13, no. 16 (August 22, 2021): 9421. http://dx.doi.org/10.3390/su13169421.
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Extra virgin olive oil is considered worldwide as one of the most important products, a standard bearer of the Mediterranean diet. Despite this, the production chain of extra virgin olive oil generates four times more waste than quantity of oil. For this reason, the disposal of olive mill wastes represents a significant environmental problem in all the Mediterranean countries. In this direction, several innovations and improvement strategies were proposed in the literature to correctly manage these by-products and, in some cases, to valorize them by the recovery of polyphenols and other interesting substances. However, innovations and improvement strategies for the valorization of olive tree leaves are definitely neglected in the literature, thus motivating this work. The aims of this work are as follow: firstly, to develop and test an innovative olive tree leaves shredder prototype to help olive oil millers in the management of waste leaves deriving from pruning and olive oil production; secondly, to test the combination of the minced olive tree leaves with other by-products in the production of high-quality compost. The results showed the effectiveness of the tested olive tree leaves shredder in significantly reducing the volume occupied by the leaves by 40%. Moreover, the mixing of the minced olive tree leaves with other by-products lead to a high-quality compost which, in accordance with Italian legislation, could even be certified and labeled with this denomination. Future research will investigate the quantification of the benefits in terms of environmental impacts using life cycle assessment.
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Khdair, Adnan, and Ghaida Abu-Rumman. "Sustainable Environmental Management and Valorization Options for Olive Mill Byproducts in the Middle East and North Africa (MENA) Region." Processes 8, no. 6 (June 5, 2020): 671. http://dx.doi.org/10.3390/pr8060671.
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Cultivation of olive trees and olive oil production have been considered as a legacy for the Mediterranean region. This custom represents a very important benefit for many nations in terms of wealth and health. However, huge amounts of by-products and waste are generated during olive oil production. This represents a serious environmental impact on land and water bodies if not properly handled. Olive oil extraction generates two waste streams, a solid waste called pomace and olive mill wastewater (OMWW), which has been considered as highly pollutant and phytotoxic waste. These wastes have high disposal costs and predominantly generated from small-scale enterprises that have limited financial resources to treat them properly before discharge to the environment. Besides being a serious environmental problem, OMWW has potential economic value that remains to be utilized such as: fertilizers, valuable antioxidants agents and fatty acids needed in human diet. Also, Olive pomace is a valuable renewable energy source with an energy density of 23 MJ/kg and has become an inexpensive alternative for fossil fuels. Aiming at adding value to the olive production sectors and potential valorization options for byproducts in the MENA region, international practices applied in olive mills wastes management’s and treatment methods used in major oil producing countries are presented.
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Macaluso, Monica, Alessandro Bianchi, Chiara Sanmartin, Isabella Taglieri, Francesca Venturi, Lara Testai, Lorenzo Flori, et al. "By-Products from Winemaking and Olive Mill Value Chains for the Enrichment of Refined Olive Oil: Technological Challenges and Nutraceutical Features." Foods 9, no. 10 (October 1, 2020): 1390. http://dx.doi.org/10.3390/foods9101390.
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A growing body of literature is available about the valorization of food by-products to produce functional foods that combine the basic nutritional impact with the improvement of the health status of consumers. In this context, this study had two main objectives: (i) An innovative multistep extraction process for the production of a refined olive oil enriched with phenolic compounds (PE-ROO) extracted from olive pomace, olive leaves, or grape marc was presented and discussed. (ii) The most promising PE-ROOs were selected and utilized in in vitro and in vivo trials in order to determine their effectiveness in the management of high fat diet-induced-metabolic syndrome and oxidative stress in rats. The best results were obtained when olive leaves were used as source of phenols, regardless of the chemical composition of the solvent utilized for the extraction. Furthermore, while ethanol/hexane mixture was confirmed as a good solvent for the extraction of phenols compounds soluble in oil, the mix ROO/ethanol also showed a good extracting power from olive leaves. Besides, the ROO enriched with phenols extracted from olive leaves revealed an interesting beneficial effect to counteract high fat diet-induced-metabolic disorder and oxidative stress in rats, closely followed by ROO enriched by utilizing grape marc.
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Pamungkas, Adityo, Ika Novia Anggraini, M. Khairul Amri Rosa, and Afriyastuti Herawati. "Aplikasi Lucutan Plasma Corona Dalam Pengolahan Limbah Cair Kelapa Sawit." JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER 10, no. 2 (November 30, 2020): 9–14. http://dx.doi.org/10.33369/jamplifier.v10i2.15313.
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ABSTRACT The green revolution in the field of palm oil farming not only contributes to processed products but also produces large-capacity waste originating from its processing starting from the sterilization process, water from the clarification process, hydro cyclone (clay bath) water, and factory washing water. Palm oil mill effluent (LCPKS) contains dissolved and suspended solids in the form of colloids and oil residues with high BOD and COD. If this liquid waste is discharged directly into the water, it can pollute the environment. Some will settle, decompose slowly, consume dissolved dcxdcoxygen, cause turbidity, emit a sharp odor and can damage the aquatic ecosystem. To improve the parameters in the LCPKS so that it is feasible to flow to water bodies or the environment, an LCPKS treatment experiment test is performed by applying corona discharge with variations in voltage and length of time, then comparing the effect on parameters such as BOD, COD, pH and TDS on LCPKS before treatment and after treatment. From the treatment process using a corona discharge application with variations in voltage and time able to reduce BOD levels up to 35%, COD 36%, increase in TDS reached 71.56% and decreased pH by 4.11%.Key words: Palm oil mill effluent (LCPKS), Corona discharge application (Corona Discharge Treatment), COD, BOD, TDS, pH
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Hasbi, Hasbi, Zainabun Zainabun, and Yadi Jufri. "Pengaruh Penggunaan Limbah Cair Pabrik Kelapa Sawit Terhadap Perubahan Sifat Kimia Ultisol dan Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq)." Jurnal Ilmiah Mahasiswa Pertanian 6, no. 4 (November 1, 2021): 637–45. http://dx.doi.org/10.17969/jimfp.v6i4.18282.
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Abstrak.Kelapa sawit (Elaeis guineensis Jacq.) merupakan salah satu tanaman penghasil minyak nabati yang sangat penting. Produksi minyak kelapa sawit perhektar merupakan produksi paling tinggi dibandingkan denganseluruh tanaman penghasil minyak nabati lainnya.Perindustrian di bidang kelapa sawit banyak mengeluarkan serat dan residu hasil pengolahan seperti limbah cair dan limbah padat. Limbah cair yang dihasilkan berupa Palm oil mill Effluent (POME) air buangan kondensat (8-12%) dan air hasil pengolahan (13-23%). Dalam1 ton hasil kelapa sawit dapa tmengeluarkan limbah yang tidak bisa di pakai atau beracun mencapai 600-700 kg limbah cair. Meningkatnya kualitas tanah dan sifat-sifat Ultisol seperti sifat fisik, biologi dan kimia tanah memerlukan suatu pengelolaan tanah dengan memberikan bahan organic seperti limbah cair kelapa sawit (sludge) yang tepat dan efisien sehingga dapat meningkatkan produktifitas tanah, karena bahan organic yang terkandung dalam limbah cair pabrik kelapa sawit baik untuk sifat kimia tanah dan dapat dipergunakan sebagai pengganti pupuk kimia untuk pupuk bibit kelapa sawit. Dalam penelitian ini menggunakan pendekatan penelitian kuantitatif dan didapatkan bahwa Pemberian limbah cair kelapa sawit dapat mempengaruhi sifat kimia tanah Ultisol dengan adanya peningkatan beberapa parameter kimia tanah baik dari pH dari 4,94 menjadi 5,26 setelah pemberian limbah cair kelapa sawit dengan pemberian 2400 ml per polibag (L4) dan Adapun parameter lainnya.Effect of Palm Oil Mill Liquid Waste Use on Changes in Chemical Properties of Ultisols and Growth of Oil Palm Seeds (Elaeis guineensis Jacq)Abstract. Oil palm (Elaeisguineensis Jacq.) is one of the most important vegetable oil-producing plants. Palm oil production per hectare is the highest production compared to all other vegetable oil producing plants. The industry in the palm oil sector emits a lot of fiber and residues from processing such as liquid waste and solid waste. The liquid waste produced is in the form of Palm oil mill Effluent (POME), condensate waste water (8-12%) and treated water (13-23%). In 1 ton of palm oil products can produce waste that can not be used or toxic up to 600-700 kg of liquid waste. Improving soil quality and Ultisol properties such as soil physical, biological and chemical properties requires a soil management by providing appropriate and efficient organic matter such as palm oil waste (sludge) so as to increase soil productivity, because of the organic matter contained in liquid waste. Palm oil mills are good for the chemical properties of the soil and can be used as a substitute for chemical fertilizers for fertilizers for oil palm seeds. In this study using a quantitative research approach and it was found that the application of palm oil effluent can affect the chemical properties of Ultisol soil with an increase in several soil chemical parameters, both from pH from 4.94 to 5.26 after administration of palm oil effluent by giving 2400 ml per polybag (L4) and other parameters.
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Flores, Marcos, Luis Reyes-García, Jaime Ortiz-Viedma, Nalda Romero, Yesica Vilcanqui, Cristian Rogel, Javier Echeverría, and Oscar Forero-Doria. "Thermal Behavior Improvement of Fortified Commercial Avocado (Persea americana Mill.) Oil with Maqui (Aristotelia chilensis) Leaf Extracts." Antioxidants 10, no. 5 (April 24, 2021): 664. http://dx.doi.org/10.3390/antiox10050664.
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Avocado oil is considered a highly prized food due to its nutritional contribution. On the other hand, Aristotelia chilensis (Molina) Stuntz (Elaeocarpaceae), common name “maqui”, is an endemic fruit in Chile, well known for its exceptional antioxidant properties. In general, maqui by-products such as leaves are considered as waste. Thus, maqui leaves extracts were used to improve the stability of vegetable oils, particularly avocado oil. Hence, avocado oil was fortified with two extracts (ethyl ether and methanol) obtained of maqui leaves and exposed to 120 °C for 386 h in an oven. The results showed a high content of monounsaturated fatty acids (69.46%, mainly oleic acid), followed by polyunsaturated fatty acids (16.41%, mainly linoleic acid) and finally saturated fatty acids (14.13%). The concentration of the total phenolic compounds in the pure oil, ethyl ether and methanol maqui leaves extracts were 45.8, 83.7, and 4100.9 ppm, respectively. In addition, the antioxidant activity was 5091.6 and 19,452.5 µmol Trolox eq/g for the ethyl ether and methanol extracts, respectively. The secondary degradation compounds showed significant differences between the fortified and non-fortified samples after 144 h and the TG/DTG analysis showed a significant increment of 7 °C in the degradation temperature (Tonset) of avocado oil fortified with the methanol extract when compared to the non-fortified oil and fortified oil with ethyl ether extract. After heating for 336 h, fortified oil with methanol extract reached the limit percentages of polar compounds, while pure oil reached it in a shorter time, i.e., 240 h. Based on the results, avocado oil can be protected with natural additives such as extracts obtained from maqui leaves, leading to an increase in its thermo-oxidative stability.
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Peeters, Kelly, Ana Miklavčič Višnjevec, Esakkiammal Sudha Esakkimuthu, Matthew Schwarzkopf, and Črtomir Tavzes. "The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe3O4 Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector." Molecules 26, no. 22 (November 17, 2021): 6946. http://dx.doi.org/10.3390/molecules26226946.
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Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated.
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Mikdame, Hind, Ezzahra Kharmach, Nour Elhouda Mtarfi, Karima Alaoui, Mohamed Ben Abbou, YAhya Rokni, Zineb Majbar, Mustapha Taleb, and Zakia Rais. "By-Products of Olive Oil in the Service of the Deficiency of Food Antioxidants: The Case of Butter." Journal of Food Quality 2020 (January 17, 2020): 1–10. http://dx.doi.org/10.1155/2020/6382942.
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Further downstream in the olive oil extraction process, the Mediterranean Basin faces a serious environmental threat caused by olive waste. Despite their polluting profile, olive waste is considered to be a very rich source of natural antioxidants, such as polyphenols. In this study, the latter was valued as a source of natural antioxidants and compared with a synthetic antioxidant ascorbic acid. Concentrations of 2, 4, 6, and 8 mg of the olive mill waste water as well as pomace and ascorbic acid are added to butter (commercial butter) and placed under storage conditions in the oven (accelerated test: 60°C) for 3 months. The alteration of the butter used was followed by determination of the peroxide value and acidity and microbiological analysis. The results obtained show that butters containing olive by-products have undergone less marked oxidative deterioration than those of the control (without additives). The best oxidative stability of butter was achieved by adding 80 mg/kg of butter, a result comparable with that obtained by adding ascorbic acid.