Journal articles on the topic 'Material extraction process'
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1
Dyachok, Vasil. "Extraction Process of Intracellular Substance." Chemistry and Chemical Technology 4, no. 2 (June 15, 2010): 163–66. http://dx.doi.org/10.23939/chcht04.02.163.
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In this study the mathematical model of the extraction process from plant material is developed, taking into account the anatomical structure of plant material, namely the presence of cellular and intercellular spaces. The solution of the model enables to determine its kinetic coefficients Dc, Dt, process conditions, and predict the kinetics of the extraction process implementation in practice.
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Wang, Feng Jie, Xin Qiao Dong, and Xiao Liu. "Extraction Process of Amaranthine Pigment Keeping the Water Wax Fuit Biological Active." Applied Mechanics and Materials 295-298 (February 2013): 150–54. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.150.
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Development natural pigment retained a variety of nutrition composition is extremely research value.Water Wax Trees Fruit was as raw materials,citric acid aqueous solution was as extracting agent.Amaranthine pigment extraction method were studied on fully grasping the stability of the natural amaranthine pigment and no damage to the water wax fruit biological activity.The effect of extraction yield were studied on Water Wax Trees Fruit natural amaranthine pigment.The results show that the better extraction conditions are extraction temperature at 70 °C, extraction time for 3h,citric acid concentration1.0 % , the material/liquid ration(g/ml) 1:5.The extraction yield is 2.95%.Ultraviolet absorption maximum wavelength is 280 nm.
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Tabakaev, Anton, Oksana Tabakaeva, and Yuriy Prikhodko. "Mathematical Modeling of Carotenoid Extraction from Brown Algae S.Miyabei." Food Industry 7, no. 3 (September 22, 2022): 50–58. http://dx.doi.org/10.29141/2500-1922-2022-7-3-6.
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The thesis concerns the conditions optimization for extracting carotenoids and fucoxanthin from brown algae S. miyabei by the math modelling method. The authors studied the influence of the following parameters: the raw materials ratio – extractant, extractions multiplicity, process duration and temperature, grinding degree of raw materials. The multifactorial experiment revealed that the extraction multiplicity and time were the determining factors affecting the carotenoids and fucoxanthin yield. The regression analysis results, particularly R 2 , demonstrated that the obtained linear equations adequately described the process regularities of obtaining extractives, lipids and pigments, carotenoids and fucoxanthin from brown algae S. miyabei, depending on the raw material–extractant ratio, the extractions multiplicity, duration, temperature, and particle size. Verification of the presented model with factors parameters beyond the parameters used in obtaining the equations confirmed the possibility and adequacy of its application to describe the extraction and yields prediction of extractives, lipids and pigments, carotenoids and fucoxanthin from the brown algae S. miyabei.
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Bandura, Valentyna. "INNOVATIVE ENERGY EFFICIENT TECHNOLOGIES OF THE SOYE EXTRACTION PROCESS." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(108) (August 27, 2020): 82–90. http://dx.doi.org/10.37128/2520-6168-2020-1-10.
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The key process for extracting oils from raw materials is extraction. In this case, extraction is a complex and time-consuming process. The extraction process is characterized by low intensity. One of the most promising and innovative methods of extracting plant material is the use of microwave technologies. As there are no generally accepted recommendations for microwave extraction regimens and extract properties, this makes it impossible to create the appropriate technology and to develop a microwave extractor to obtain the target substances. The article reviews the existing equipment for extraction of various raw materials. It is shown that pulsed electromagnetic field is an effective tool for the implementation of microwave technology. The degree of intensification of mass transfer processes with the application of directional energy diffusion technologies can be much higher than the possibilities of traditional technologies. Scientists study that traditional processes take 3 hours or more, and the process of barodiffusion plus gravity takes less than 30 minutes. The results of the study of the innovative process of soybean extraction using microwave technologies are presented in the article. With increasing temperature, the extraction rate increased, which was associated with an increase in the rates of chemical reactions and diffusion coefficients, a positive effect on the kinetic, internally and externally diffusive nucleus, the driving force of the process increased, and the resistance to its course decreased. The intensification of the extraction process by the microwave field occurs by increasing the pressure inside the capillaries of the vegetable raw materials, with their subsequent destruction and maximum flow of the target component into the extractant. There is a flow of diffusion, which contributes to a significant reduction in time and increase the extraction of valuable components from raw materials. The use of microwave technologies is real and promising as the extraction process facilitates the release of the target component with a significant increase in the concentration (an average of 2 times) and a significant reduction in the oil extraction time.
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Polievoda, Yurii, Igor Tverdokhlib, and Valentina Bandura. "MODELLING OF OILY RAW MATERIAL EXCRACTION PROCESS." Vibrations in engineering and technology, no. 3(94) (November 26, 2019): 92–101. http://dx.doi.org/10.37128/2306-8744-2019-3-12.
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This paper concentrates on approaches to mathematical modelling of oily raw material extraction process. «Evolution» of modeling hypothesis based on analysis of differential diffusion equation under the right boundary and initial conditions; on simplified model of Fick's equation and on material balance equation; on mass transfer model in adsorption pore volume; on model for the surface layer by analogy of Van der Waals equation; on Gibbs' model based on the abrupt change of phases due to the intermolecular forces; on the simplest Langmuir equation model; on lattice-based models of Guggenheim, Pryhozhyn, Everett, Ohm, Briukhovetskyi and others. The fact that we need to know a large number of micro - parameters makes these models difficult to use in practice. Under normal extraction conditions, the flow, which comes out of solid phase, collides with the resistance of the diffusion boundary layer, which presents a tangible obstacle affecting the duration and quantity of special-purpose component extraction. As the boundary layer thickness depends on the hydrodynamics of the process, under the influence of the microwave field his obstacle is almost insensible, as the intense movement of liquid reduces its thickness. The main factor acting on the quantity of extracted substance is a pressure difference in capillaries and in the flow of extraction agent and mass transfer coefficient. The effect of pulse microwave input during the extraction transfers the process of diffusion from the external environment to internal, because internal pressure diffusion dominates in this process, but not the convective diffusion with the influence of external agent.
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Anh, Trieu Tuan, Luu Tu Hao, Long Giang Bach, Duy Chinh Nguyen, and Tri Duc Lam. "Effect of Extraction Process on Extraction Yeild, Total Polyphenol Content and Antioxidant Activity of Jasminum Subtriplinerve." Key Engineering Materials 814 (July 2019): 527–31. http://dx.doi.org/10.4028/www.scientific.net/kem.814.527.
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Jasminum Subtriplinerve Blume (Oleaceae) is herbal plants widely a tea for weight loss, stimulates milk glands. Extract product it easy used yet had little research. This study was carried out to evaluate the effect of extracting conditions such as water/material ratio, extraction temperature and extracting time on extracting yield, polyphenol content and antioxidant activity of J.subtriplinerve extract. The total phenolic compounds were determined according to the Folin–Ciocalteu method. Extraction yield (0.22g/100 g) was obtained at water/material ratio 15:1 (ml/g), 40°C and 4 hours extraction time. Under these optimized conditions, the polyphenol content of was 2640.4 μg/1g extract. And the extract can harvest 46.11 % of DPPH (30 μg/ mL) at 10 000 μg/ml concentration
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Crăciun, Alina Lenuța, and Gheorghe Gutt. "Optimization of Experimental Parameters in the Solvent Extraction of Trans-Resveratrol from Pruning Waste of Vitis vinifera, Fetească Neagră Variety." Applied Sciences 13, no. 2 (January 6, 2023): 823. http://dx.doi.org/10.3390/app13020823.
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The past few decades have seen a marked expansion in market demand for food supplements with therapeutic value. Due to this demand, the recovery of vine waste for obtaining certain phytochemicals or plant synthesized compounds with health-promoting activities can be an important economic component, principally with the agreement of the European Union for resveratrol as a new food ingredient. For the sake of economic capitalization, it is necessary to determine optimum extraction parameters for maximum recovery. In this paper, we have determined the optimum parameters for the solvent extraction of trans-resveratrol from vine prunings. We tested different extraction conditions: 35 different types of solvents, 10 types of solid-to-liquid ratios, 10 extraction times, 10 types of granulosity of the ground material and 7 consecutive extractions on the same material. The optimal parameters determined were: solvent ethanol:diethyl ether 4:1 ratio, 1:35 solid liquid ratio g/mL, 4 days for extraction time, 500 µm–350 µm granulosity of powdered material and one extraction on the material. These findings are confirmed by optimization of extracting parameters according to Box–Behnken design.
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Guo, Qing Feng, and Wei Wang. "Orthogonal Experiment Selecting Extraction Process of Protodioscin in Trigonella Foenum-graecum l." Applied Mechanics and Materials 608-609 (October 2014): 1120–27. http://dx.doi.org/10.4028/www.scientific.net/amm.608-609.1120.
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Objective: To select the best process extracting protodioscin from trigonella foenum-graecum L. Methods: Methods: Orthogonal experiment method is used, and the content of protodioscin is used as the indicator. And the influence of ethanol solution concentration, the ratio of material to solvent, extraction time and extraction times on extraction rate of protodioscin from trigonella foenum-graecum L. And the best extraction process is selected. Results: 75% of ethanol is used, the ratio of material to solvent is 1:60, and ultrasound extraction is made for three times, each time for 15min, which is the best extraction process. The experiment proves that the optimization conditions are reliable and are suitable for ultrasound extraction process of protodioscin in trigonella foenum-graecum L.
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Gafurov, K., A. Artikov, and D. Xasanov B.Mukhamadiey. "Modeling the Process of Extraction of Oilseed Material in a Unit with Critical Carbon Dioxide." International Journal of Trend in Scientific Research and Development Volume-1, Issue-6 (October 31, 2017): 50–61. http://dx.doi.org/10.31142/ijtsrd2448.
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Iskakov, I. Zh, E. E. Lanina, A. V. Alekseev, E. V. Kravtcova, V. A. Shanin, and O. A. Egorova. "Development of a method for efficient extraction of food raw materials." IOP Conference Series: Earth and Environmental Science 1052, no. 1 (July 1, 2022): 012024. http://dx.doi.org/10.1088/1755-1315/1052/1/012024.
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Abstract Optimization of extracting food products from plant raw materials using a mathematical model is suggested. The model has been derived for the analysis of extracting pectin from Jerusalem artichoke. Multistage anti-cyclic extraction, non-stationary diffusion for the initial element of the processed raw material in the form of plates is considered. The calculations take into account the effect of reverse solvent change, the time of the solvent drain from the solid phase, among other process parameters. The derived equation makes it possible to analyze the effect of the impregnation of a part of the miscella at an intermediate stage of a countercurrent multistage extraction on the efficiency of the process. The correctness of the mass conductivity coefficient calculations was confirmed using the performance indicators of the extractor. Based on the data obtained, a mathematical model was created that describes the extraction process with a variable coefficient of mass conductivity. Thus, it is possible to determine the optimal parameters of the process including the rate of fluid flow through the material, the crushed material particle size, the thickness of the particles, and the processing time.
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Elustondo, Diego, Laura Raymond, Regis Risani, Lloyd Donaldson, and Marie Joo Le Guen. "Exploratory Pressure Impregnation Process Using Supercritical CO2, Co-Solvents, and Multi-Cycle Implementation." Forests 13, no. 12 (November 29, 2022): 2018. http://dx.doi.org/10.3390/f13122018.
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Supercritical carbon dioxide (scCO2) is extensively used for extracting chemicals from materials, but the impregnation of materials with chemicals using scCO2 has received little attention in comparison. To the best of our knowledge, most technologies described in the literature operate by the principle of diffusion, where impregnation yield is limited by solubility. The objective of this exploratory study is to prove the feasibility of an scCO2 impregnation process that can extract solutes from one material and release them into another material through a single extraction/impregnation stage that can be applied in cycles to increase the yield. The feasibility of the concept was proven in the laboratory using radiata pine bark wax as the solute and radiata pine wood as the impregnated material. Extraction/impregnation tests were performed at temperatures between 40 and 60 °C, pressures between 12 and 16 MPa, and with the addition of ethanol and acetone as co-solvents. The study demonstrated the feasibility of multi-cycle scCO2 impregnation of wax into wood, where the novelty of the concept is the implementation as traditional pressure impregnation methods.
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Du, Bing, Yan Li Jiao, Zhi Qiang Huang, Lian Kai Mao, Yuan Yuan Fan, Hai Xiong Wu, Long Bo Jiang, and Gong Ming Yang. "Ethanol Extraction of Flavonoids from Mungbean Skin after Twin-Screw Extrusion Process." Advanced Materials Research 393-395 (November 2011): 1203–11. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1203.
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In order to increase the extraction rate of flavonoids from mungbean skin, twin-screw extrusion process was used as a pretreatment method. After optimizing conditions of twin-screw extrusion process, effects on ethanol extracting flavonoids were studied. Results revealed that the best extrusion conditions were: screw speed at 268r/min, extrusion temperature at 115~120°C, feed moisture at 17% and feeding rate at 726g/min. Under these conditions, the optimum condition for ethanol extraction of flavonoids was: using 38% ethanol solution at a material-liquid ratio of 1:20 at 77.5 °C with 2.5 h. The average extraction rate of flavonoids from mungbean skin was 3.14%, comparing to rate of un-extruded material 2.07%, extraction rate raised by 51.5%. This pretreatment can destroy the density structure of mungbean skin which has great effect on the increase of extraction rate of flavonoids.
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Hu, Qingzhong, Zhantao Wang, Xinjia Lu, and Yi Luo. "The intelligent monitoring of powder material extraction production process." IOP Conference Series: Materials Science and Engineering 740 (March 17, 2020): 012072. http://dx.doi.org/10.1088/1757-899x/740/1/012072.
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Shi, Xian Feng, Yuan Xu, Yu Hua Li, Hong Xia Zeng, and Yu Hong Sun. "Optimization of Extraction Process of Lycopene from Watermelon (Citrullus lanatus) by Response Surface Methodology." Applied Mechanics and Materials 140 (November 2011): 385–93. http://dx.doi.org/10.4028/www.scientific.net/amm.140.385.
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The extraction processing of lycopene from watermelon was investigated in this paper. Based on single factor experiments, response surface methodology (RSM) was adopted to study the key parameters such as number of extraction, extraction temperature, extraction time in order to increase extraction rate of lycopene. A second order quadratic equation was established and the applicability of model and interaction involved factors on predicting the lycopene extracting content was verified. The results indicated that the optimum extraction conditions were hexane (containing 2% dichloromethane) as extraction solvent, ratio of solvent to raw material of 3:1 (mL/g), number of extraction of 2, extraction time of 1.9 h and extraction temperature of 29.8°C. Under these conditions the extracting content of lycopene was 14.71±0.22 mg/kg, which is well in agreement with value predicted by the model.
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Wang, Feng Jie. "Optimization of Process for Extraction of Yellow Pigment from Almond Shell." Applied Mechanics and Materials 522-524 (February 2014): 429–32. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.429.
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The effect of extraction temperature,extraction time,alcohol concentration, ratio of material to liquid (g/ml)on extraction yield of natural yellow pigment from waste almond shell were studied. The optimum conditions were determined by L9 (34) the orthogonal test . The optimum extraction conditions are the extraction temperature at 75°C;the extraction time for 2h; the extraction agent concentration of 20%ethanol ; the material-liquid ration (g/ml) 1:15.The extraction yield of natural yellow pigment from almond shell is 6.25%,The order of effects are extraction temperature>extraction time>ratio of material to liquid(g/ml)>alcohol concentration.This research provides the theoretical basis for the industrial production of the extraction of natural almond shell pigment and provides a new way for the re-use of the abandoned almond shell.
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Han, Ru Bing. "Analysis of Impact on the Wafer Surface Performance of Supercritical CO2 Extraction." Advanced Materials Research 160-162 (November 2010): 704–8. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.704.
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The surface of the wafer is easy to be polluted by the organic pollution material. The supercritical fluid extraction technology works well in extracting organic pollution material. Whether the extraction process influences the surface performance of the wafer can be determined through the SEM(scanning electron microscope), AFM (atomic force microscope), and XPS (X-ray photoelectron spectroscopy). Compare the feature and the electronic structure of the wafer before and after supercritical CO2 extraction to get how supercritical CO2 extraction process influences the wafer surface performance. The conclusion helps to determine whether the extraction technology can be applied in the wafer surface cleaning technology. Tests show that supercritical CO2 extraction process almost does not influence the surface performance of the wafer, and, the supercritical CO2 extraction technology has a good prospect in the wafer cleaning.
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Khabarov, I. А., V. V. Zhurov, А. N. Zhabayeva, and S. М. Adekenov. "Modeling the extraction process of medicinal raw materials." Bulletin of the Karaganda University. "Chemistry" series 100, no. 4 (December 30, 2020): 135–44. http://dx.doi.org/10.31489/2020ch4/135-144.
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The review considers 26 mathematical models of the process of biologically active substances extraction from medicinal plant raw materials, taking into account factors affecting the extraction process: diffusion coefficient, particle size, layer porosity, extractant feed rate, raw material grinding method, pressure, temperature and duration of extraction, individual characteristics of raw materials (content of the target component) and technological equipment. In general, these models fall into four important groups: empirical models, models based on heat transfer analogies, a shrinking core model, and models based on differential mass bal-ance. Here were described problems that occur in the selection of mathematical models, first of all, associated with the imperfect behavior of the flows of extraction liquids, and the inhomogeneous cross-section of the extraction apparatus. It was shown that first of all the extraction process modeling requires mathematical models to describe the mass transfer inside solid particles. It is also important to take into account the solubility of the target substances when simulating. It is shown that for describing the extraction processes, the optimal models are Naik and Lentz, Esquivel, diffusion, H. Sovová mass transfer, damaged and undamaged cells for calculating the main factors of extraction processes.
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Adekenov, Sergazy Mynzhasarovich, Il'ya Anatol'yevich Khabarov, and Adaybek Iskakov. "OPTIMIZATION OF EXTRACTION TECHNOLOGY OF PEGANUM HARMALA L. ROOTS." chemistry of plant raw material, no. 3 (October 22, 2020): 279–84. http://dx.doi.org/10.14258/jcprm.2020037763.
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The aim of this work is to develop an effective and economical technology for extracting the sum of extractive substances from raw materials of Peganum harmala L. roots by percolation method.
The plant material is the roots of Peganum harmala L., collected in October 2017 in the vicinity of the village of Akshi (Almaty region, Kazakhstan). Maceration was carried out on the pilot unit ERSND-1 (Karaganda, Kazakhstan). Percolation was carried out on extractor P-250 (Tomsk, Russia). Quantitative analysis of the content of harmine in the amount of extractive substances was determined by HPLC with a UV-detector method.
Various factors affecting the efficiency of extracting the sum of alkaloids from the roots of Peganum harmala L. by maceration and percolation method are reviewed and compared in this work. It has been established that percolation is the preferred extraction method for the sum of extractive substances, which makes it possible to reduce the extraction process by 5 times compared to maceration. The optimal processing parameters and grinding of raw materials of Peganum harmala L. roots, as well as the technological parameters of extraction, providing a quantitative yield of the sum of alkaloids were established.
The studies show the promise of using the percolation method and the need for further work on the implementation of the developed technology for the extraction of Peganum harmala L. alkaloids in the production of the substance of the neurotropic drug "Harmine hydrochloride".
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Hai, Tran Chi. "A RESEARCH ON KINETIC MODELLING ON EXTRACTION OF TOTAL POLYPHENOL FROM OLD TEA LEAVES." Vietnam Journal of Science and Technology 55, no. 5A (March 24, 2018): 218. http://dx.doi.org/10.15625/2525-2518/55/5a/12198.
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In this study, kinetic modeling by investigating the effect of material sizes, water/material ratios and temperatures was conducted. Polyphenol concentration increased with reducing size, increasing the water/material ratio and temperature. The results showed that under extraction conditions such as the material size of 0.3 mm, the water/sample ratio of 15/1, the extracting temperature of 60 oC, and extracting time of 40 minutes, the polyphenol content obtained was of 77.33 mgGAE.g-1 with value of initial extraction rate reached 50.90 mgGAE.g-1.min-1 and the activation energy was determined as 16.162 kJ/mol. Polyphenol extraction dynamic model from the old tea leaves relied on the assumption of the quadratic function has been successfully constructed to predict the extraction process and mechanism. Based on the kinetic equation, extraction parameters, including Ce extraction ability, extraction velocity, extraction constant k, and activation energy E can be determined, facilitated optimization, designed, simulated and controlled significant industrial projects.
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Menshutina, Natalya V., Artem I. Artemiev, Illarion I. Khudeev, Ilya V. Kazeev, and Olga A. Bocharova. "APPLICATION OF SUPERCRITICAL EXTRACTION FOR ISOLATION OF CHEMICAL COMPOUNDS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 6 (May 15, 2021): 4–19. http://dx.doi.org/10.6060/ivkkt.20216406.6405.
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This paper provides a review of the scientific literature on the study of the supercritical extraction process. The use of substances in a supercritical state as an extractant is the basis of the supercritical extraction process. In a supercritical fluid, there is a high intensity of mass transfer, which allows the supercritical fluid to easily penetrate into the raw material and efficiently extract the target components. Carbon dioxide is of particular interest, since its use as an extractant in the process of supercritical extraction meets the basic principles of «green chemistry». The paper presents the mechanisms of mass transfer of target components from plant raw materials that arise during the process of supercritical extraction using carbon dioxide. The kinetics of the supercritical extraction process is considered. During the process, three main periods are distinguished: a period of a constant extraction rate, a period of a falling extraction rate, and a period of a low extraction rate. The influence of temperature and pressure, the influence of water in the raw material on the yield of target components in the process of supercritical extraction is shown. Supercritical extraction requires special high-pressure equipment. The paper presents the main technological solutions for the implementation of the process. A comparison of the process of supercritical extraction with extraction in the Soxhlet apparatus is carried out. The supercritical extraction process makes it possible to obtain an extract of high purity, which is promising for the production of biologically active medicinal components and the separation of impurities from difficult-to-separate mixtures. Examples of the application of supercritical extraction in industry are given. In addition, the paper presents studies on the extraction of aralosides from Aralia mandshurica plant raw materials using the supercritical extraction process. Supercritical extraction is considered as a safe and more efficient way to extract target components from plant materials.
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Li, Hong, and Rui Liu. "Study on Extraction of Natural Dyestuff from Lawsonia inermis." Advanced Materials Research 550-553 (July 2012): 1807–10. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.1807.
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The optimal process of extracting the natural dyestuff from Lawsonia inermis were studied. Results showed that the optimum extraction conditions are as follows: extraction solvent is 60% ethanol, the ratio between material and solvent is 1:20 (W/V), extraction temperature is 75°Cand extraction time is 120min.
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Tsebrenko, K. N., V. V. Derevenko, and N. I. Sevryugina. "Analysis and optimization of the structure of liquid phase flows in extractors of multiple irrigation of the oil-containing material with an extractant." IOP Conference Series: Earth and Environmental Science 1052, no. 1 (July 1, 2022): 012093. http://dx.doi.org/10.1088/1755-1315/1052/1/012093.
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Abstract The analysis of the flows structure in extractors operating by the method of multiple irrigation of the oil-containing material with an extractant (extractive agent) has been carried out. The features of the mass transfer process are considered using experimental data on the equilibrium: in the system the oil-containing material is the extractant and the kinetics of the extraction of the oil-bearing material. Experimental data of the concentration of miscella at each stage of a belt extractor operating according to the method of multi-stage irrigation were obtained under production conditions. Based on the data obtained, a working line of the extraction process for this extractor (extraction unit) was constructed, which made it possible to substantiate the ways of improving the structure of the liquid phase flows in it. The improvement of the streams structure of the liquid phase of the belt extractors is carried out on the basis of mathematical modeling of the process of extracting oil from the oil-containing material. We take into account the effect of reverse recirculation of the extractant and the dynamics of moving the extractant in the solid phase in the zone of no irrigation. It is shown that it is possible to intensify the extraction process by organizing an additional injection of the extractant at the last stage of the extractor. A numerical experiment was carried out on the basis of the developed mathematical model, which takes into account the additional injection of the solvent. As a result, it was found that the proposed solution allows reducing the oil content of the meal to 0.8%.
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Chabanova, Oksana, Sergii Bondar, Yevhenii Kotliar, Tatiana Nedobiychuk, and Yakiv Verkhivker. "Analysis of the pectin extraction process at recycling of secondary material resources." Technology audit and production reserves 3, no. 3(59) (July 2, 2021): 34–39. http://dx.doi.org/10.15587/2706-5448.2021.235270.
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The object of research is the secondary material resources of processing plant and animal raw materials, namely fruit pomace and milk whey. One of the most problematic areas is that the waste of these industries has high rates of biological and chemical oxygen consumption of wastewater, which significantly impairs the operation of local and city treatment facilities. In addition, the parameters of extraction and determination of the quality indicators of the obtained product are not well defined. The processing of whey and pomace of fruit crops can reduce the environmental burden on the environment and increase the efficiency of technological processes through resource conservation and obtaining a surplus product. The problem is solved, in particular, by using the process of extracting plant waste using milk whey and the process of energy-saving membrane concentration. In the course of the study, let’s use pectin-containing plant waste from juice production, namely watermelon, pumpkin, quince, beetroot, apple and a mixture of orange and tangerine pomace. The results obtained indicate that the process of extracting apple pomace with milk whey is promising, since the highest pectin content in the extract is established for apple pomace. The main amount of pectin substances passes into the extract starting from 75 minutes to 90 minutes. Extraction-hydrolysis for 2 hours at a temperature of 85 °C, pH=2–2.5 units determines the best results. Ultrafiltration of the obtained extract makes it possible to increase the pectin content up to 3.0 % with a protein content of more than 6.0 %. The membranes used in the experiment are characterized by high selectivity for protein and pectin. The fact is established that diafiltration makes it possible to effectively purify whey-pectin concentrates from ballast impurities with simultaneous enrichment of the concentrate with high-molecular components of whey. A technological scheme for the production of pectin-whey concentrate with high organoleptic and detoxification characteristics is proposed. The proposed technological process has a number of positive features, in particular, a high content of pectin substances, high value indicators, a significant reduction in the burden on the environment, economic benefits through energy conservation and obtaining a surplus product.
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Guoqing, Shi, Xiang Qisen, Fan Yichao, Zhao Wenen, and Liu Yanqi. "Optimization of Process on Extracting Flavonoids from Dry Onion Skins by Alkaline Method." Open Chemical Engineering Journal 9, no. 1 (June 26, 2015): 39–46. http://dx.doi.org/10.2174/1874123101509010039.
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The flavonoids in dry onion skins were extracted by alkaline solution method. On the basis of single factor combined with ternary quadratic regression general rotary unitized design, the effects of several extraction parameters on the extraction efficiency of total flavonoids were investigated, including extraction times, pH of the extraction solution, material / extraction solution ratio, extraction time, and temperature. NaNO2-Al(NO3)3-NaOH method was used for the determination of total flavonoids. The optimal extraction conditions were as follows: two times of extraction; pH, 11; material / extraction solution ratio, 30 : 1; extraction temperature, 83.0 ~ 84.0 °C; extraction duration, 1.9 ~ 2.0 h. Under the above optimal conditions, the flavonoids extracted from dry onion skins yielded 2.82%.
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Tram, Ly Ngoc. "SEPARATION PROCESS OF ROSMARINIC ACID AND THEIR DERIVATIVES FROM CELASTRUS HINDSII BENTH LEAVES." Vietnam Journal of Science and Technology 54, no. 2C (March 19, 2018): 380. http://dx.doi.org/10.15625/2525-2518/54/2c/11865.
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Rosmarinic acid is a naturally antioxidant, which is biosynthesized from the amino acids Lphenylalanineand L-tyrosine by eight enzymes that include phenylalanine ammonia lyase andcinnamic acid 4-hydroxylase. Rosmarinic acid can also be chemically produced by theesterification of caffeic acid and 3,4-dihydroxyphenyllactic acid. Recently, rosmarinic acid andits derivatives (RA) have attracted interests for their biological activities, which include antiinflammatory,anti-oxidant, anti-angiogenic, anti-tumor, and anti-microbial functions. RAextraction procedure from Xaden leaves Celastrus hindsii was investigated. RA extracts wereobtained from 50 % ethanol extract. The optimal conditions for extraction were as followings:solvent/material ratio 12/1 (v/m), two time extractions, and total extraction time of 3 hours. RAextracts were refined by Diaion HP-20column to have RA with 83.30 % purity and yield 2.86 %(by dry weight material).
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Yang, Guo En, Gui Wu Wang, Zhi Ping Wu, and Xiang Zhou Li. "Study on Steam Extraction Technology Assisted by Microwave of Anise Star Oil from the Fruit of Illicium verum Hook. f." Advanced Materials Research 201-203 (February 2011): 2935–38. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2935.
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Evaluated with the yield of anise star oil, steam extraction method assisted by microwave is studied for the extraction of anise star oil from Illicium verum Hook. f. in contrast with the traditional steam distillation (SD) method in this paper. The new optimal steam extraction technology assisted by microwave of anise star oil is obtained as: extracting time 80 minutes, solid-liquid ratio(g/mL) 1:7, size of material 80~100 mesh and extracting temperature 80°C. Average yield of anise star oil is up to 11.6% (g/g) under the above technology. Size of material is the most important influencing factor in the extraction process. The optimal traditional steam distillation technology is: extracting time 120 minutes, solid-liquid ratio(g/mL) 1:6, size of material 80~100 mesh and extracting temperature 100°C , the average yield of anise star oil is only 9.81% (g/g). The steam extraction technology assisted by microwave has advantages in both the technological conditions and the yield of anise star oil than the traditional steam distillation technology.
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Jokić, S., D. Velić, M. Bilić, A. Bucić-Kojić, M. Planinić, and S. Tomas. "Modelling of solid-liquid extraction process of total polyphenols from soybeans." Czech Journal of Food Sciences 28, No. 3 (July 1, 2010): 206–12. http://dx.doi.org/10.17221/200/2009-cjfs.
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The influence of the solvent, temperature, and extraction time on the extractability of total polyphenols from milled soybeans variety Ika was investigated. The study was performed in order to select the most suitable solvent (water; 50, 60, 70, and 80% aqueous ethanol) for achieving the highest yield of total polyphenols. The most effective solvent (50% aqueous ethanol solution) was used for monitoring the kinetics and modelling of solid-liquid extraction of total polyphenols from soybeans, average particle size 0.459 mm, at solid-liquid ratio of 20 ml/g (ratio of the solvent volume per g of raw material). The total polyphenols content in the soybean extract was determined spectrophotometrically using Folin-Ciocalteu micro-methods at 765 nm. The applicability of different mathematical models (Peleg, Page, and Logarithmic models) to describe the kinetics of the solid-liquid extraction process of total polyphenols from soybeans was studied as well. The results exhibited a significant influence of the solvent and temperature on the kinetics and extraction yield of total polyphenols from soybeans. The best extraction yield of total polyphenols was obtained using 50% aqueous ethanol solution at 80°C after 120 min (4.322 mg GAE/g<sub>db</sub>). The extraction yield of total polyphenols in soybean extracts increased by increasing the extraction temperature and extending the duration of the extraction process. The mathematical models applied showed a good agreement with the experimental results, which allows their application in modelling and optimisation of solid-liquid extraction process for the extraction of total polyphenols from soybeans.
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Agrienvi. "DOI: https://doi.org/10.36873/a , Mahdi Santoso, Yanciluk." Agrienvi: Jurnal Ilmu Pertanian 13, no. 02 (February 12, 2020): 31–43. http://dx.doi.org/10.36873/aev.v13i02.726.
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ABSTRACTNipa (Nypa fruticans Wurmb) is a non wood lignosellulosic materials that potential as raw material of compositeboard. One of disadvantage of the nipa fronds was contains are very high extractives and inorganic substances. Thepresence of high content of extractives in raw material of particle board potentially be an obstacle in the process ofgluing the composite board. The existing of extractive substances on the surface of the composite board raw materialscontribute to make the bonding process is not going well. On the other side, the utilization of natural binder for nonwood composite is still limited. This research focused to investigated the effects of extractive subtances for bondingperformance of natural binder such as citric acid for nipa fronds particleboard. The particles screened passed throughaperture sizes of 10 mesh and treated with three condition (non extraction, hot water extraction and n -hexanaextraction) were used as materials in this research. Addition of natural binder of 10% based on air dried particles wasdone and pressing temperature was set at 180ºC under a pressure of 3,6 MPa during 10 minutes. The physics andmechanics properties of particleboard was tested by standard JIS A 5908:2003. The results showed that theextractiction treatments for raw material affects on the properties of the particleboards. Hot water extraction treatmentwas able to give the best results. The properties of particleboard was density 0.84 g.cm-3; moisture content 7.44%;thickness swelling 1,12%; water absorption 21,83%; surface roughness 7.57 ?m; internal bonding 0.49 MPa; modulusof rupture 10.42 MPa and modulus of elasticity 3.65 GPa. All of the properties of nipa fronds particleboard meet mostof the standards JIS A 5908:2003.Keywords: Hot water extraction, n-hexane extraction, nipa frond particleboard, natural binder, citric acid.
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Krolczyk, Jolanta B. "Industrial Conditions of the Granular Material Manufacturing Process." Applied Mechanics and Materials 693 (December 2014): 267–72. http://dx.doi.org/10.4028/www.scientific.net/amm.693.267.
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The article presents industrial conditions of manufacturing multi-component heterogeneous mixtures of granular materials. The study analyzed the production technology and devices used for production such as storage siloes, an impact screen, a cyclone separator, a shaving and dust extractor, a screw mixer, a tensometric weigh, a bucket conveyor. A division and the successive stages of manufacturing process has been presented: unloading, receipt and storage of raw materials, quality control of components, technology cleaning and sorting of raw materials, dosage and mixing of feed material, bagging, storage, extraction processes and evaluation of homogeneity in a fodder mixing plant. Moreover the methods of assessing the homogeneity of the multi-component heterogeneous mixtures has been presented. The research was conducted in industrial conditions.
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Andryushayev, Oleksiy, Olena Ruban, Yuliia Maslii, and Inna Rusak. "Intensification of the extraction process of phenolic compounds from Acorus calamus leaves." ScienceRise: Pharmaceutical Science, no. 4(32) (August 31, 2021): 4–10. http://dx.doi.org/10.15587/2519-4852.2021.238329.
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The aim. To determine the intensified method of extraction of phenolic compounds from Acorus calamus leaves and optimal conditions for the process.
Materials and methods. In order to develop the optimal intensified method of extraction samples were prepared in different conditions of raw materials-extractant ratio, temperature, time and multiplicity. As a raw materials spectrophotometrically pre-standardized Acorus calamus leaves were used. The extraction was carried out in a hermetically sealed ultrasonic extraction reactor PEX 1 (REUS, Contes, France). As the criteria of extraction efficiency were indicators of dry residue and total amount of flavonoids determined using methods described in State Pharmacopoeia of Ukraine. The amount of flavonoids was determined spectrophotometrically on a certified device Specord 200 (Analytik Jena, Germany).
Results. According to our research results it was found that ultrasonic action and addition of surfactant significantly improves the efficiency of the extraction process. The optimal conditions for the process were determined. Experimentally proved that the rational raw material-extractant ratio is 1:15. Comparative study of the extraction process with different temperatures showed that the highest amount of extractives is achieved at temperature 70 °C and 45 min of duration. The optimal extraction multiplicity is 3.
Conclusions. As a result of the study, the intensified extraction method for Acorus calamus leaves – re-maceration with ultrasound – was established. The conducted researches allowed to develop the method of extraction, expedient in the conditions of the modern pharmaceutical industry.
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Lisovaya, E. V., E. P. Victorova, A. V. Sverdlichenko, and N. N. Kornen. "Secondary resources of tomato processing as a valuable raw material for obtaining food ingredients." New Technologies 17, no. 2 (June 6, 2021): 40–47. http://dx.doi.org/10.47370/2072-0920-2021-17-2-40-47.
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It is known that enterprises processing vegetables and fruits generate secondary resources (waste), in particular, pomace, in significant volumes. The most valuable, in terms of the composition and content of biologically active macro- and micronutrients, is tomato pomace. Tomato pomace is a valuable source of natural carotenoids, including lycopene, which exhibits high antioxidant activity. The article provides an overview of scientific research aimed at developing methods for extracting carotenoids, including lycopene, from recycled tomato processing resources. It has been shown that, in general, when extracting carotenoids, including lycopene, from secondary resources of tomato processing, various methods of drying and grinding the raw material are used, and then biologically active substances are extracted. It should be noted that the method of pretreatment of the feedstock, the nature of the solvent, the temperature and duration of the extraction process have a significant effect on the antioxidant activity and bioavailability of carotenoids obtained as a result of extraction. It is shown that the use of a pulsed electric field, treatment with enzymes and ultrasonic treatment of tomato pomace allow to intensify the process of extraction of carotenoids and maximally preserve their antioxidant properties. Thus, it can be concluded that tomato pomace is a valuable raw material for obtaining extracts of carotenoids and, first of all, lycopene, and the development of effec- tive modes of the extraction process that ensure the maximum manifestation of antioxidant properties and the bioavailability of the extracted substance is an urgent task.
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Torres, R. Abel C., Diego T. Santos, and M. Angela A. Meireles. "Construction and Validation of an Online Subcritical Adsorption-based Device for Assisting CO2 Recycling during a Supercritical Fluid Extraction Process." Open Food Science Journal 10, no. 1 (December 31, 2018): 46–61. http://dx.doi.org/10.2174/1874256401810010046.
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Background:An efficient process for extracting food ingredients from plant materials should demand the use of a reduced volume of extraction solvent to obtain a final product that is free of solvent and reduces both the processing time and the costs. In some cases, achieving a new efficient process requires the modification, reconfiguration or renewal of elements that are part of a processing unit.Objective:The goal of this work is to describe the development of a modification of a commercial supercritical fluid extraction pilot unit designed to assist CO2recycling based on subcritical adsorption on an adsorbent material. In addition to the construction and validation of the system, a cost survey was performed to estimate the cost of the homemade device developed to allow effective CO2recycling.Methods:The developed device was tested using cotton and Celite®as model adsorption materials and annatto seeds (Bixa orellana L.) as a model plant material. A 0.65 L adsorption column was installed with a set of connections and valves that complemented the unit’s recycle system. The validation procedure consisted of defatting annatto seeds.Results:The proposed online subcritical adsorption-based device was technically validated using cotton as an adsorbent material. The cost survey showed that an estimated total cost of USD 5731.36 would be required to install the developed device in a Supercritical Fluid Extraction (SFE) unit similar to the one coupled here (5 L).Conclusion:The proposed device was demonstrated to be very promising for application in the pseudocontinuous SFE, recirculating the same amount of CO2mass exceeding the S/F values by 14 times, when compared to a process without a CO2recycling system.
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Aourabi, Sarra, Mouhcine Sfaira, and Fatima Mahjoubi. "Optimization of Ultrasound-Assisted Extraction of Polyphenol Content from Zea mays Hairs (Waste)." Scientific World Journal 2020 (December 17, 2020): 1–10. http://dx.doi.org/10.1155/2020/5072938.
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The aim of this study was to achieve the best extraction efficiency of the hydroethanolic extract of Zea mays hairs. The impacts of ethanol concentration, extraction time, and solvent /material ratio were studied in relation to the performance of Zea mays extracts by ultrasonic extraction at 50 kHz and room temperature. All extracts were quantitatively characterized in terms of polyphenol content. Response surface methodology (RSM) was carried out to optimize the extraction process and increase extraction efficiency. In the experiments, different concentrations of ethanol:water were used. The efficiency of the extraction process was determined from an analysis of variance (ANOVA). The maximum extraction efficiency of the hydroethanolic extraction (31.37%) and the quantitative value of the polyphenol content (257.87 mg EAG/g extract) were obtained using a treatment time of 40 min, an ethanol:water (70 : 30), and a solvent/material ratio (11 mL/g). The results obtained indicate that ultrasonic-assisted extraction is an effective method for extracting natural compounds from Zea mays, thus allowing the full use of this abundant and inexpensive industrial waste.
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Garcia-Castello, Esperanza M., Luis Mayor, Alejandro Calvo-Ramirez, Ruben Ruiz-Melero, and Antonio D. Rodriguez-Lopez. "Response Surface Optimization of Inulin and Polyphenol Extraction from Artichoke (Cynara scolymus (L.)) Solid Wastes." Applied Sciences 12, no. 16 (August 9, 2022): 7957. http://dx.doi.org/10.3390/app12167957.
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Artichoke wastes after processing represent 60–70% of the raw material and are a potential source of inulin and polyphenols, bioactive compounds that can be valorized as food ingredients or nutraceutical products. The aim of this work was to assess and optimize the extraction of these compounds from artichoke wastes using water or water–ethanol mixtures as extracting agents. For simultaneous inulin and polyphenol extraction and to achieve high antioxidant activity in extracts, the best process conditions using water as an extracting agent were T = 89 °C and t = 139 min, where 80% of the inulin content, 60% of the total phenolic content (TPC) and 56% of the antioxidant activity (Aox) were obtained. For water–ethanol extractions, the best results were obtained with EtOH = 22.4%, T = 81 °C and t = 217 min, leading to extraction yields of 90% of TPC, 38% of Aox and 58% of inulin content. From these results, we recommend the use of water for the recovery of inulin and polyphenols from artichoke wastes. Although the extraction yield of polyphenols is lower in water treatments, the amount extracted is considerable and it is a greener option when compared with water–ethanol mixtures.
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Vu Thi, Thanh An, Khanh Cao Cong, Thanh Hoa Mac Thi, Son Tran Hung, Thanh Thuy Do Thi, and Huyen Nguyen Thi. "Development of the process for extracting and isolating hesperidin from Chenbi to establish as a reference standard." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 5, no. 1 (March 30, 2022): 68–76. http://dx.doi.org/10.47866/2615-9252/vjfc.3885.
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Hesperidin is the main active ingredient in the flavonoid group, accounting for about 3 % of Chenbi. According to studies, hesperidin has anti-oxidant, analgesic, and anti-inflammatory effects on the nervous system as well as enhancing the body's resistance. Chenbi is a simple medicine, easy to obtain, and uses medicinal material for the potential extraction and isolation of Hesperin with high yield. The study developed and validated the process of determining hesperidin on medicinal samples and raw materials by HPLC. The study was successful in making the active ingredient hesperidin with a purity > 95 % (HPLC) sufficient as a condition to be used as a referenced material. Extraction and isolation process using 70 % ethanol extraction solvent with extraction method is reflux heating then cleaning with activated carbon and purified on chromatographic equipment to obtain high recovery efficiency, simple and economical process.
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Tran, Quoc Toan, The Dan Pham, Thanh Duong Nguyen, Van Huyen Luu, Huu Nghi Do, Xuan Duy Le, Phi Hung Nguyen, et al. "Optimization of Murrayafoline A ethanol extraction process from the roots of Glycosmis stenocarpa, and evaluation of its Tumorigenesis inhibition activity on Hep-G2 cells." Open Chemistry 19, no. 1 (January 1, 2021): 830–42. http://dx.doi.org/10.1515/chem-2021-0067.
Full textAbstract:
Abstract Glycosmis stenocarpa is a species of shrub found in the Northern provinces of Vietnam. Its roots contain different carbazolic derivatives, mainly Murrayafoline A (Mu-A), which exhibits valuable biological activities. In this study, we performed an extraction of Mu-A from the roots of G. stenocarpa and optimized this process using response surface methodology (RSM) according to a central composite design, with three independent parameters including extraction time (min), extraction temperature (°C), and solvent/material ratio (mL/g). Two dependent variables were the Mu-A content (mg/g raw materials) and extraction efficiency (%). The optimal conditions to extract Mu-A were found to be as follows: extraction temperature, 67°C; extraction time, 165 min; and solvent/material ratio, 5:1. Under these conditions, the Mu-A content and extraction efficiency were 38.94 ± 1.31 mg/g raw materials and 34.98 ± 1.18%, respectively. Mu-A exhibited antiproliferation and antitumor-promoting activity against the HepG-2 cell line. The present optimization work of Mu-A extraction from G. stenocarpa roots contributed to the attempt of designing a large-scale extraction process for the compound and further exploitation of its potential in vivo applications.
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Zahari, Mohamed Shahrir Mohamed, Mohd Zamri Ibrahim, Su Shiung Lam, and Ramli Mat. "Prospect of Parallel Biodiesel and Bioethanol Production from JatrophaCurcas Seed." Applied Mechanics and Materials 663 (October 2014): 44–48. http://dx.doi.org/10.4028/www.scientific.net/amm.663.44.
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This study focuses on the utilization prospect of JatrophaCurcas seed solely as transport sector renewable fuel for producing biodiesel and bioethanol in a parallel system. Diesel (biodiesel) and petrol (bioethanol as petrol additive) engine fuel could be produce from J. Curcas seed oil portion and its’ seed residue, respectively. Ultrasonic-assisted reactive extractions were used for simultaneous oil extraction and esterification/transesterification of J. Curcas seed. The use of acid/alkaline catalyst and ultrasound resulted in a completely de-oiled seed residual by extracting about 50% oil which is equivalent to the Soxhlet extraction performance. The seeds were being chemically and physically characterized with ultimate analyses and TGA for its suitability as bioethanol raw material. Ultimate analyses revealed similarity with other bioconversion feedstock having carbon and oxygen as the major chemical compositions; with slightly lower carbon content in the residuals due to the oil extraction during the in-situ process. However, TG profile exhibited better decomposition of mass in the ultrasonicated residues having easier accessible and better degradable fiber for bioethanol production process. These shown positive effects on the J. Curcasseed pre-treatment during biodiesel reactive extraction process and for further bioconversion toward bioethanol.
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Gong, Yitong. "Study on the Technology of Extracting Water-soluble Dietary Fiber (SDF) from Peanut Shell by Ultrafine Grinding and Microwave." E3S Web of Conferences 189 (2020): 02015. http://dx.doi.org/10.1051/e3sconf/202018902015.
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Using ultra-fine pulverized peanut shells as raw materials, the effects of citric acid mass fraction, microwave processing time, and microwave power on the extraction rate of SDF were investigated. The box-Behnken experimental design and response surface analysis method were used to optimize the microwave-assisted ultra-fine pulverization. The SDF process for extracting peanut shells determines the best extraction conditions. The optimal extraction conditions for SDF are that citric acid mass fraction is 4.2%, microwave treatment time is 4.5min, microwave power is 400W and material-liquid ratio is 1:30. The yield and the purity of SDF is respectively 47.05% and 85.35%.
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Yun, Liu, Kan Huan, Fan Fang-Yu, Tang Jun-Rong, Zhang Ying-Jun, and Zhao Ping. "Microwave-Assisted Extraction and Antioxidant Activities of Polyphenols from Camellia Fascicularis Leaves." Current Topics in Nutraceutical Research 17, no. 2 (June 12, 2018): 164–71. http://dx.doi.org/10.37290/ctnr2641-452x.17:164-171.
Full textAbstract:
A microwave-assisted extraction method was established and optimized for extracting polyphenols from the leaves of Camellia fascicularis, which possess antioxidant properties. Microwave-assisted extraction of polyphenols from C. fascicularis leaves was optimized using response surface methodology. The influential factors, including ethanol concentration, ratio of liquid to raw material, and microwave power, were studied to optimize the extraction process, while setting the irradiation time to 20 s. The optimum process parameters, namely, ethanol concentration of 50%, the ratio of liquid to raw material of 32 mL/g, and microwave power of 160 W, contributed to the highest polyphenol yield of 106.1 mg GAE/g dw. The crude polyphenols were purified through an HP-20 macroporous adsorption resin column to obtain purified C. fascicularis polyphenols. Antioxidant assay demonstrated that purified polyphenols from C. fascicularis showed significant antioxidant activities in a concentration-dependent manner for scavenging hydroxyl, 2,2-diphenyl-1-picrylhydrazyl, and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radicals. Thus, microwave-assisted extraction was an effective method of extracting polyphenols from C. fascicularis leaves, which might be an excellent food material with potential antioxidant properties.
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Zhao, Peng, and Xiao Song. "Optimization of Ultrasonic Extraction Process by Response Surface Methodology of Polysaccharides from Tussilago farfara L." Advanced Materials Research 771 (September 2013): 41–44. http://dx.doi.org/10.4028/www.scientific.net/amr.771.41.
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Polysaccharides from Tussilago farfara L.(TFPs) was extracted with the assistance of ultrasonic.Box-Behnken design (BBD) was employed to optimize extraction time; extraction temperature;ultrasonic extraction power and ratio of water to raw material to obtain a high TFPs yield.The optimum extraction conditions were as follows: extraction temperature 65.1°C, ultrasonic power 380.5W, extraction time 28.7 min and ratio of water to raw material 23.6ml/g.The yield of polysaccharide was 2.14% based on the above mentioned conditions.
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Djuraev, Khayrullo, Mamura Yodgorova, Akhtam Usmonov, and Mukhammad Mizomov. "Experimental study of the extraction process of coniferous plants." IOP Conference Series: Earth and Environmental Science 839, no. 4 (September 1, 2021): 042019. http://dx.doi.org/10.1088/1755-1315/839/4/042019.
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Abstract The article presents the results of studying the influence of such factors as the contact surface of the phases, the degree of grinding of the material, the nature of the flow and the ratio of the two phases called the hydro-module. It has been experimentally proven that at a hydro-module of 1: 4.1: 5, soluble components diffuse to the surface of the material, mixing and dissolving almost completely. By choosing a more acceptable hydro-module, it is possible to obtain a large percentage yield of the extract with the most valuable components, as well as to intensify the extraction process.
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Wang, Xi Ping, Sheng Xiong Dong, and Feng Chen. "Ultrasonic-Assisted Extraction of Gardenia Yellow from Fructus Gardeniae." Advanced Materials Research 396-398 (November 2011): 1075–78. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1075.
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Gardenia yellow was extracted from fructus Gardeniae using water as extracting solvent by means of ultrasonic-assisted extraction (UAE). The effects of ratio of water to raw material, exaction time and temperature were investigated by single factor and orthogonal experiments. The results showed that the optimal extraction parameters were the extraction temperature of 40°C, ratio of water to raw material of 6:1, and time of 40 min. Under the conditions, the yield of gardenia yellow was 95.15% and the OD value was 1.51. The ratio of water to raw material had the most prominent effect on the process of UAE, followed by the time and then the temperature according to the statistical analysis of orthogonal experiments. Compared with traditional methods, UAE showed a better effect on the extraction efficiency of gardenia yellow from fructus Gardeniae at lower temperature as well as in a shorter time with higher yield when using water instead of organic solvents as extracting solvent.
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Fabritskaya, A. A., S. O. Semenikhin, V. O. Gorodetsky, N. I. Kotlyarevskaya, and E. P. Victorova. "Modern research on the extraction of biologically active substances from plant raw materials using enzymes." New Technologies 17, no. 2 (June 6, 2021): 56–66. http://dx.doi.org/10.47370/2072-0920-2021-17-2-56-66.
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The article overviews modern studies of domestic and foreign scientists in the field of extraction of biologically active substances from plant materials using enzymes. Extraction of biologically active substances using enzymes allows for controlled biotransformation of plant materials due to the precise specificity and selectivity of enzymes, which creates mild conditions that ensure the preservation of biologically active substances. It has been noted that the quality of the extractant used has a significant effect on the efficiency of the extraction process. Thus, raw materials treated with a combination of an electrolyte and an enzyme are extracted more efficiently by reducing the mass transfer barrier. The main advantage of using supercritical fluids as an extractant is a decrease in temperature or pressure that leads to the precipitation of the extractable substance. One of the main disadvantages of the process of extracting biologically active substances from plant materials using enzymes is their high cost. To eliminate this disadvantage, the following intensification methods are used: ultrasonic treatment, high pressure treatment and microwave treat- ment. The most promising methods for intensifying the process of extracting biologically active substances from plant materials using enzymes are methods of ultrasonic and microwave treatment. Ultrasonic treatment under optimal conditions allows increasing the activity of enzymes, and microwave treatment provides more efficient penetration of the extractant into the tissues of plant material, due to the destruction of cell walls.
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Saoud, A. A., R. M. Yunus, and R. A. Aziz. "Microwave-Assisted Extraction of Essential Oil from Eucalyptus: Study of the Effects of Operating Conditions." Journal of Engineering Research [TJER] 3, no. 1 (December 1, 2006): 31. http://dx.doi.org/10.24200/tjer.vol3iss1pp31-37.
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Classical extraction of essential oil such as Soxhlet and steam distillation is still a formidable and time-solvent consuming. Microwave assisted process (MAP) is used to accelerate the extraction process of target compounds. It can be used for the extraction of compounds from various plants and animal tissues, or the extraction of undesirable components from raw materials. The investigation of microwave extraction of eucalyptus (globules ) essential oil using ethanol as solvent was carried out. The influence of material (eucalyptus)/solvent (ethanol) ratio, required doses of microwave, and time of microwave exposure on extraction efficiency, was studied.
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Dyachok, V. V., I. L. Dіachok, and O. L. Ivankiv. "Оbtaining isovaleric acid extraction from plant raw material." Chemistry, Technology and Application of Substances 4, no. 1 (June 1, 2021): 152–57. http://dx.doi.org/10.23939/ctas2021.01.152.
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The paper presents a mathematical description of the process of obtaining isovaleric acid by the method of extraction of roots and rhizomes of valerian, taking into account its chemical structure and the nature of the extractant. The traditional case of the extraction process, the straight line of equilibrium in the case of using an aqueous alcohol solution as an extractant and the unconventional case of using desalinated water as an extractant, which is represented by a convex equilibrium line, is substantiated. The cause of the unconventional case is the phenomenon of formation of associations between diphilic molecules of isovaleric acid and dipole molecules with water. The possibility of using ion exchange was investigated to isolate isovaleric acid from the extract of biologically active compounds. The identity of isovaleric acid obtained in this way by the gas method was confirmed chromatography.
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Kukhtenko, O. S., N. Y. Bevz, Ie V. Gladukh, and H. P. Kukhtenko. "Study on the development of liquid extract of cardiotonic action." Farmatsevtychnyi zhurnal, no. 3 (July 1, 2019): 41–48. http://dx.doi.org/10.32352/0367-3057.3.19.05.
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At the Department of Industrial Pharmacy of the National University of Pharmacy, a complex cardiotonic action extract containing extracts of Crataegus охуaсanta fruits, Leonurus cardiaca herb, Melissa officinalis herb and Humulus lupulus seedballs in equals proportions is being developed.
The purpose of work was to determine the quantitative yield of biologically active substances, depending on the degree of depletion of medicinal plant raw materials extractant.
Each medicinal plant raw material used in obtaining the extract was tested for compliance with the incoming normative documents and crushed. Percolation was performed using a laboratory percolator.
As an extractant, 70% ethyl alcohol was used. The extraction process was carried out till obtaining a total extract of DER 1:10. For each separately collected sample of the liquid extract, the dry residue was determined using the Sartorius MA150C moisture analyzer (Germany). The extraction process was monitored by quantifying the polyphenolic compounds in extracts obtained in portions with DER step 1: 1 spectrophotometrically on the Evolution 60s spectrophotometer (Thermo Fisher Scientific, USA).
The maximum yield of polyphenolic compounds is observed from Humulus lupulus. The smallest amount of polyphenolic compounds is extracted from the grass of Melissa officinalis and Crataegus oxyacanta. This trend is maintained for all variants of the ratio of raw materials/extractant.
According to the physical and chemical research, the presence of polyphenolic nature substances in the composition of the extractions of the investigated medicinal plant material and the total extract has been confirmed. According to the results of the study, it was determined that the maximum amount of polyphenolic compounds is removed from the following medicinal plant material – Humulus lupulus. The results correlate with earlier studies to determine the multiplicity of extraction by dry residue in the extract and extractions of individual plant materials.
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Börjesson, Mikaela, Linda Härdelin, Filip Nylander, Kristina Karlsson, Anette Larsson, and Gunnar Westman. "Arabinoxylan and nanocellulose from a kilogram-scale extraction of barley husk." BioResources 13, no. 3 (June 25, 2018): 6201–20. http://dx.doi.org/10.15376/biores.13.3.6201-6220.
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Processes of extracting hemicellulose from annual plants usually neglect the cellulose fraction. This study explored the possibility of obtaining both a hemicellulose and a cellulose fraction of sufficient quality for further use, with barley husks used as the raw material. An alkaline extraction was used to isolate the biopolymers by a process in which sodium dithionite replaced the traditional sodium borohydride as the reducing agent. The cellulose fraction was successfully transformed into nanocellulose by sulfuric acid hydrolysis, and the obtained hemicellulose (i.e., arabinoxylan) displayed carbohydrate composition characteristics similar to those previously reported in the literature for processes of extracting hemicellulose from barley husks. Using this methodology, both the cellulose and hemicellulose can be isolated in high quantities of dry material and used for transformation into new bio-based materials.
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Mantovan, Janaina, Fábio Yamashita, and Suzana Mali. "Modification of Orange Bagasse with Reactive Extrusion to Obtain Cellulose-Based Materials." Polysaccharides 3, no. 2 (May 6, 2022): 401–10. http://dx.doi.org/10.3390/polysaccharides3020024.
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Orange bagasse (OB) could be considered a sustainable, renewable, and low-cost biomass for the extraction of cellulose. In this context, reactive extrusion can be considered an excellent, eco-friendly, alternative process for the extraction of cellulose from lignocellulosic materials. Thus, the present study aimed to obtain cellulose-based materials with a reactive extrusion process and also to investigate the impact of pectin on the delignification process. Two groups of samples (OB and depectinizated OB) were submitted to extrusion with sulfuric acid or sodium hydroxide in one-step processes. The cellulose content of extruded materials was highly affected by pectin content in the raw material; the thermal profile (TGA curves) and crystallinity also changed. The cellulose content of modified materials ranged from 18.8% to 58.4%, with a process yield of 30.6% to 79.2%. The alkaline reagent provided the highest cellulose content among all extrusion treatments tested, mainly for OB without pectin. The extrusion process was considered an efficient and promising process for extracting cellulose from citrus residue. Materials produced in this study can be used as sources of cellulose fiber for various products and processes, such as in the food industry, fermentation substrates, or refined applications after subsequent treatments.
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Sukmanov, Valeriy, and Olena Kovalchuk. "The Influence of the Parameters of the Subcritical Water Extraction Process on the Efficiency of Isoflavones Elicitation from Soy Meal." Restaurant and hotel consulting. Innovations 4, no. 2 (December 28, 2021): 299–315. http://dx.doi.org/10.31866/2616-7468.4.2.2021.249092.
Full textAbstract:
Topicality. Incidental products of soy processing (okara, meal, millcake) contain a large amount of protein, and, additionally, other valuable biologically active substances. Among them, isoflavones are of particular researchers’ interest. Subcritical water extraction is a promising method for elicitation biologically active substances from plant raw material. However, such a method of extracting isoflavones, and its rational parameters for soy meal, remain insufficiently investigated. Aim and methods. The aim of this work is to study the influence of parameters (temperature: 120...160°С, duration of extraction: 5...15 min, hydromodule: 1:15...25) of the extracting process of soy meal with subcritical water on the isoflavones content in the dry material of the extract. The empirical research method is applied, using the second-order orthogonal compositional outline for a fractional factor experiment. The samples of soy meal extract are obtained using the experimental setup, based on the high-pressure reactor “RHP-2-500”. The total isoflavones content in the dry extract material is defined in terms of gallic acid with absorption spectrophotometry method. Results. Based on the obtained results, the quadratic interpolation model is constructed. This model links the total isoflavones content in the dry extract material with the extraction parameters. The analysis of the constructed model makes it possible to establish rational measures of extraction parameters. Conclusions and discussion. In this study, the intensive growth of soflavones content in the dry extract with highing the temperature process, and a relatively small influence of the process duration on this indicator, were defined. The influence of the hydromodule is ambiguous. The lowest yield of isoflavones is noted at hydromodule ≈1:21,41. Its increase or decrease lead to the growth of isoflavones content in the extract. In this paper, for the first time, the existence of rational measures of parameters in the process of extracting isoflavones with subcritical water from soy meal is studied and established. The obtained results can be used in the elaboration of the technology for producing isoflavones enriched soy protein concentrate.
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Belemets, Tatiana, Uliana Kuzmyk, Roman Gryshchenko, and Tetiana Osmak. "Determination of technological parameters of obtaining stevia extract." EUREKA: Life Sciences, no. 3 (October 3, 2022): 15–20. http://dx.doi.org/10.21303/2504-5695.2022.002584.
Full textAbstract:
The prospects for the use of a plant raw material – stevia as a natural sweetener for obtaining sweet extracts have been substantiated. Literary research has been conducted on the expediency of carrying out preparatory operations of stevia-raw material in order to intensify mass exchange processes during extraction; their necessity has been theoretically justified.
A number of studies have been conducted with the aim of intensifying the process of extracting the dry mass of stevia leaves. Preliminary preparation of stevia was carried out – crushing (using a laboratory crusher – A1-DM2R) and subsequent sieving to the average size of the leaf fraction – 3.9±0.1 mm.
It is proposed to use whey from the production of sour milk cheese to obtain sweet extracts of stevia for their further use in the food industry.
It has been established, that the highest efficiency of the extraction process of the prepared dry stevia leaf mass is achieved with a hydromodule – 1:15. Carrying out the process under these conditions allows to achieve the highest degree of extraction of extractive substances – 29.9.
The results of the experimental studies, obtained and presented in the article, can be used to carry out further physicochemical analyzes of the quality of the obtained stevia extracts and the possibility of combining them with a milk base to obtain a dietary range of food products