Journal articles: 'Tamanu oil'

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Raharivelomanana, Phila, Jean-Luc Ansel, Elise Lupo, Lily Mijouin, Samuel Guillot, Jean-François Butaud, Raimana Ho, Gaël Lecellier, and Chantal Pichon. "Tamanu oil and skin active properties: from traditional to modern cosmetic uses." OCL 25, no. 5 (September 2018): D504. http://dx.doi.org/10.1051/ocl/2018048.

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Calophyllum inophyllum L. (Calophyllaceae), locally called “tamanu” in French Polynesia, is an evergreen pantropical tree growing mostly along the seashores. Its barks, leaves, and fruits are still used in traditional medicine. The oil expressed from the nuts has been also traditionally used. Tamanu oil is topically applied on skins as well as mucous membrane lesions. This oil is especially recommended to heal all kinds of skin ailments. Bioassays and different assessments of Tamanu oil revealed numerous biological activities (antioxidant, anti-inflammatory, antibacterial, wound healing…), so bringing scientific evidence of beneficial effects of this oil on human skin healing. Such biological properties may explain the use of tamanu oil as an active cosmetic ingredient recorded as “Calophyllum inophyllum seed oil” by the INCI (International Nomenclature of Cosmetic Ingredients). Most of the bioactive properties of tamanu oil are attributed to oil composition including the presence of resinous compounds in tamanu oil beside common fatty acids, which constitutes a unique characteristic of this healing oil. Actually, resinous part of tamanu oil is known to contain bioactive secondary metabolites mostly constituted by neoflavonoids including pyranocoumarin derivatives. Herein, chemical constituents and biological properties of tamanu oil are presented with a focus of its traditional use inspiring modern valuations related to cosmetic field.

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Erdogan, Sevil S., Tugba F. Gur, Neslihan K. Terzi, and Bilal Dogan. "Evaluation of the cutaneous wound healing potential of tamanu oil in wounds induced in rats." Journal of Wound Care 30, Sup9a (September 2, 2021): Vi—Vx. http://dx.doi.org/10.12968/jowc.2021.30.sup9a.v.

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Aims: Tamanu is a plant oil derived from the fruit and seeds of the Calophyllum inophyllum tree. Although scientific data on tamanu oil are limited, it is recommended worldwide for the treatment of abrasions, burns, diabetic wounds and scars. This study aimed to compare the wound healing efficacy of the topical use of tamanu oil with a reference drug in rats. Methods: Uniform wounds were induced on the dorsum of 21 rats, randomly divided into three groups. The control group received normal saline; the tamanu group received tamanu oil; and the centella group was treated with Centella asiatica. Wound healing was clinically evaluated using wound healing scoring and wound contraction. A biopsy was taken from the wound sites of each rat on days 7, 14 and 21 for histopathological evaluation. Results: Wound contraction was significantly lower in the tamanu group compared with the other groups. On day 7, the intensity of macrophage infiltration and mature granulation tissues were significantly higher in the centella and tamanu groups than in the control group. Fibrosis and collagen density were higher in the tamanu group than the other groups on day 7. Conclusion: In wound healing in rats, tamanu oil accelerated the formation of macrophage-granulation tissues-fibrosis and resulted in less wound contraction.

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Nguyen, Hieu Huu, and Thuy Thi Minh Tran. "Chemical composition analysis and antibacterial-antiinflammatoryactivity tests of tamanu seed oil extracted by supercritcial fluid technology." Science and Technology Development Journal 19, no. 3 (September 30, 2016): 146–54. http://dx.doi.org/10.32508/stdj.v19i3.573.

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The natural product of tamanu oil is valuable in medicine and cosmetic. In this study, the tamanu oil was extracted by supercritical CO2 (sCO2) and Soxhlet (using hexane solvent) methods. The fatty acids and coumarins compound of the obtained tamanu oil were analyzed by gas chromatography–mass spectrometry (GC-MS). The antibacterial and anti-inflammatory activities were also investigated by the diffusion method and performed on the white mice ears (Swiss albino). Content of fatty acid in tamanu oil extracted using sCO2 (72.62 %) was higher than that using Soxhlet method. The compound of coumaron (2H-1-bezopyran-2-one, C9H6O2) was identified belonging the simple coumarin group and its content in the tamanu oil extracted using sCO2 was the highest (169.69 μg/g), 1.79 and 2.04 times as much as that using Soxhlet method and the commercial oil, respectively. Besides, the results of investigation of the antibacterial activity suggested that the tamanu oil extracted using sCO2 was able to against some of strains namely: Staphylococcus aureus (S. aureus) ATCC 25923, S. aureus ATCC 29213, methycilin-resistant S. aureus (MRSA) ATCC 43300, and Pseudomonas aeruginosa (P. aeruginosa) ATCC 277853. In term of the anti-inflammatory activity, the tamanu oil extracted using sCO2 was anti-inflammatory effectively with reducing flammatory: 21.41 – 25.39 % as for the thickness of mice ears and 33.88 – 39.40 % as for the weight of mice ears.

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Pribowo, Amadeus, Jyothsna Girish, Marsia Gustiananda, Rakrya Galih Nandhira, and Pietradewi Hartrianti. "Potential of Tamanu (Calophyllum inophyllum) Oil for Atopic Dermatitis Treatment." Evidence-Based Complementary and Alternative Medicine 2021 (December 26, 2021): 1–9. http://dx.doi.org/10.1155/2021/6332867.

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Tamanu oil, derived from the nut of Calophyllum inophyllum L., has been traditionally used to treat various skin-related ailments. In recent years, this oil is increasingly gaining popularity as researchers continue to search for novel natural alternative therapies for various skin diseases. There have been a number of in vitro and in vivo studies investigating various skin-active properties of tamanu oil, and it has been proven to have potent anti-inflammatory, antioxidant, antimicrobial, analgesic, and even wound-healing abilities. These properties make tamanu oil an especially interesting candidate for the treatment of atopic dermatitis (AD). This multifaceted disease is marked by the disruption of the skin barrier function, chronic inflammation, and skin microbiome dysbiosis with limited treatment options, which is free from adverse events and inexpensive, making it desperate for a new treatment option. In this review, we examine previous in vitro and in vivo studies on AD-relevant pharmacological properties of tamanu oil in order to evaluate the potential of tamanu oil as a novel treatment option for AD.

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Cassien, Mathieu, Anne Mercier, Sophie Thétiot-Laurent, Marcel Culcasi, Emilie Ricquebourg, Alice Asteian, Gaëtan Herbette, Jean-Pierre Bianchini, Phila Raharivelomanana, and Sylvia Pietri. "Improving the Antioxidant Properties of Calophyllum inophyllum Seed Oil from French Polynesia: Development and Biological Applications of Resinous Ethanol-Soluble Extracts." Antioxidants 10, no. 2 (January 30, 2021): 199. http://dx.doi.org/10.3390/antiox10020199.

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Tamanu oil from Calophyllum inophyllum L. has long been used in traditional medicine. Ethanol extraction was found the best strategy for recovering bioactive compounds from the resin part of Tamanu oil, yielding two neutral and acidic resins fractions with high phenolics, flavonoids and pyranocoumarins concentrations. A further cascade of LPLC/HPLC separations of neutral and acidic resin fractions allowed identifying fifteen metabolites, and among them, calanolide D and 12-oxocalanolide A (both in neutral fraction) were first identified from a natural source. All these extracts, subfractions and isolated metabolites demonstrated increased free radical scavenging, antioxidant, anti-inflammatory, antimicrobial and antimycobacterial activity compared to Tamanu oil and its de-resinated lipid phase. Overall, these results could promote resinous ethanol-soluble Tamanu oil extracts as a useful multifaceted and renewable medicinal resource.

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Ginigini, Joape, Gaël J. Lecellier, Mael Nicolas, Mohammed Nour, Edouard Hnawia, Nicolas Lebouvier, Gaëtan Herbette, Peter Lockhart, and Phila Raharivelomanana. "Chemodiversity ofCalophyllum inophyllumL. oil bioactive components related to their specific geographical distribution in the South Pacific region." PeerJ 7 (May 22, 2019): e6896. http://dx.doi.org/10.7717/peerj.6896.

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BackgroundDifferent parts of the treeCalophyllum inophyllumL. (nuts, leaves, roots, bark, fruits, nut oil and resin) are used as traditional medicines and cosmetics in most of the Pacific Islands. The oil efficiency as a natural cure and in traditional cosmetics has been largely described throughout the South Pacific, which led us to investigateC. inophyllum’s chemical and genetic diversity. A correlative study of the nut resin and leaf DNA from three distinct archipelagos in the South Pacific was carried out in order to identify diversity patterns inC. inophyllumacross the South Pacific.MethodsCalophyllum inophyllumplants were sampled from French Polynesia, New Caledonia and Fiji. We extracted tamanu oil (nut oil) resin for chemo-diversity studies and sampled leaf tissues for genetic studies. We applied an analysis method designed for small quantities (at a microscale level), and used High Performance Liquid Chromatography (HPLC) to establish the chemo-diversity of tamanu oil resin. In-house standards were co-eluted for qualitative determination. Genetic diversity was assessed using chloroplast barcoding markers (the Acetyl-CoA carboxylase (accD) gene and the psaA-ycf3 intergenic spacer region).ResultsOur HPLC analysis revealed 11 previously known tamanu oil constituents, with variability among plant samples. We also isolated and characterized two new neoflavonoids from tamanu oil resin namely, tamanolide E1 and E2 which are diastereoisomers. Although genetic analysis revealed low genetic variation, our multivariate analysis (PCA) of the tamanu oil resin chemical profiles revealed differentiation among geographic regions.ConclusionWe showed here that chromatographic analysis using formalized in-house standards of oil resin compounds for co-elution studies against oil resin samples could identify patterns of variation among samples ofC. inophyllum,and discriminate samples from different geographical origins.

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Hieu, Tran Trung, Soon-Il Kim, Sang-Guei Lee, and Young-Joon Ahn. "Repellency to Stomoxys calcitrans (Diptera: Muscidae) of Plant Essential Oils Alone or in Combination With Calophyllum inophyllum Nut Oil." Journal of Medical Entomology 47, no. 4 (July 1, 2010): 575–80. http://dx.doi.org/10.1093/jmedent/47.4.575.

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Abstract The repellency to female Stomoxys calcitrans (L.) (Diptera: Muscidae) of 21 essential oils (EOs) alone or in combination with Calophyllum inophyllum L. (Clusiaceae) nut oil (tamanu oil) was examined using an exposed human hand bioassay. Results were compared with those of commonly used repellent N,N-diethyl-3-methylbenzamide (DEET). In tests with six human male volunteers at a dose of 0.5 mg/cm2, patchouli (protection time [PT], 3.67 h) was the most effective EO but less active than DEET (4.47 h), as judged by the PT to first bite. Very strong repellency also was produced by clove bud, lovage root, and clove leaf EOs (PT, 3.50–3.25 h), whereas strong repellency was obtained from thyme white EO (2.12 h). Thyme red, oregano, and geranium EOs exhibited moderate repellency (PT, 1.24–1.11 h). At 0.25 mg/cm2, protection time of clove bud, clove leaf, and lovage root EOs (PT, ≈1 h) was shorter than that of DEET (2.17 h). An increase in the protection time was produced by binary mixtures (PT, 2.68–2.04 h) of five EOs (clove bud, clove leaf, thyme white, patchouli, and savory) and tamanu oil (0.25:2.0 mg/cm2) compared with that of either the constituted essential oil or tamanu oil alone (PT, 0.56 h). The protection time of these binary mixtures was comparable with that of DEET. With the exception of savory EO, the other EOs, tamanu oil, and binary mixtures did not induce any adverse effects on the human volunteers at 0.5 mg/cm2. Thus, binary mixtures of essential oils and tamanu oil described merit further study as potential repellents for protection from humans and domestic animals from biting and nuisance caused by S. calcitrans.

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Nguyen, Minh Nhat, Thanh Dat Le, Bao Viet Nguyen, Thi Ngoc Lan Nguyen, Daniel Pioch, and Huynh Cang Mai. "Purification trials of Tamanu (Calophyllum inophyllum L.) oil." OCL 28 (2021): 53. http://dx.doi.org/10.1051/ocl/2021042.

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Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (called resin) being entrained. Although these should not be seen as impurities owing to their known bioactivity in many fields, not only they are responsible for the poisonous nature impeding human consumption in addition to bad smell, but they contribute to the poor oil quality, especially low stability and associated short shelf life. The present study aimed at purifying a crude tamanu oil sample through a combination of simple steps: deresination with ethanol, degumming using hot water, neutralization (KOH), bleaching with activated carbon, and deodorization. Ethanol 96% was more efficient for deresinating, compared to methanol, resulting in the extraction of 44–46% w/w of resin within 10 min (temperature 40 °C; oil:ethanol 1:1.5 w/v). Oil quality was checked in the industrial crude sample and in the fully refined product. The applied process strongly improved the color from dark brown to light golden yellow, decreased the acid value (62 down to 0.11 mgKOH/g of oil), and the viscosity (181 to 130 mPa.s). The saponification value was lowered from 206 to 180 mgKOH/g oil. The peroxide value was only slightly lowered from 85 to 55 mgO2/kg oil, thus pointing out the peculiar chemical nature of tamanu oil. Improving this important quality parameter would require additional research work, together with fine-tuned optimization of experimental conditions for a panel of crude oil samples; this was out of the scope of present work. This preliminary study shows that refining steps widely applied at industrial scale could help improving the quality of tamanu oil – an underused natural feedstock – for enhanced application in health and cosmetic fields.

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Pham, D. H., and T. T. Nguyen. "Preparation of Tamanu Oil Nanoemulsions by Phase Inversion Temperature." IOP Conference Series: Materials Science and Engineering 991 (December 22, 2020): 012116. http://dx.doi.org/10.1088/1757-899x/991/1/012116.

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Le Coz, Christophe-J. "Allergic contact dermatitis from tamanu oil (Calophyllum inophyllum, Calophyllum tacamahaca)." Contact Dermatitis 51, no. 4 (October 2004): 216–17. http://dx.doi.org/10.1111/j.0105-1873.2004.0424h.x.

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Raj, Mohan T., and Murugumohan Kumar K. Kandasamy. "Tamanu oil - an alternative fuel for variable compression ratio engine." International Journal of Energy and Environmental Engineering 3, no. 1 (2012): 18. http://dx.doi.org/10.1186/2251-6832-3-18.

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Mohanraj, T., and K. Murugu Mohan Kumar. "Operating Characteristics of a Variable Compression Ratio Engine Using Esterified Tamanu Oil." International Journal of Green Energy 10, no. 3 (March 16, 2013): 285–301. http://dx.doi.org/10.1080/15435075.2011.653849.

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Antony Miraculas, G., N. Bose, and R. Edwin Raj. "Optimization of process parameters for biodiesel extraction from tamanu oil using design of experiments." Journal of Renewable and Sustainable Energy 6, no. 3 (May 2014): 033120. http://dx.doi.org/10.1063/1.4880216.

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Tran, Gia-Buu, Nghia-Thu Tram Le, and Sao-Mai Dam. "Potential Use of Essential Oil Isolated fromCleistocalyx operculatusLeaves as a Topical Dermatological Agent for Treatment of Burn Wound." Dermatology Research and Practice 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/2730169.

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Several herbal remedies have been used as topical agents to cure burn wound, one of the most common injuries in worldwide. In this study, we investigated the potential use ofCleistocalyx operculatusessential oil to treat the burn wound. We identified a total of 13 bioactive compounds of essential oil, several of which exhibited the anti-inflammatory and antimicrobial activities. Furthermore, the essential oil showed the antibacterial effect againstS. aureusbut not withP. aeruginosa.The supportive effect of essential oil on burn wound healing process also has been proven. Among three groups of mice, wound contraction rate of essential oil treated group (100%) was significantly higher than tamanu oil treated (79%) and control mice (71%) after 20 days (0.22±0.03versus0.31±0.02 cm2, resp.,p<0.05). Histological studies revealed that burn wounds treated with essential oil formed a complete epidermal structure, thick and neatly arranged fibers, and scattered immune cells in burn wound. On the contrary, saline treated burn wound formed uneven epidermal layer with necrotic ulcer, infiltration of immune cells, and existence of granulation tissue. This finding demonstratedCleistocalyx operculatusessential oil as promising topical dermatological agent to treat burn wound.

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Urbánková, Kašpárková, Egner, Rudolf, and Korábková. "Caseinate-Stabilized Emulsions of Black Cumin and Tamanu Oils: Preparation, Characterization and Antibacterial Activity." Polymers 11, no. 12 (November 27, 2019): 1951. http://dx.doi.org/10.3390/polym11121951.

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Caseinate-stabilized emulsions of black cumin (Nigella sativa) and tamanu (Calophyllum inophyllum) oils were studied in terms of preparation, characterization, and antibacterial properties. The oils were described while using their basic characteristics, including fatty acid composition and scavenging activity. The oil-in-water (o/w) emulsions containing the studied oils were formulated, and the influence of protein stabilizer (sodium caseinate (CAS), 1–12 wt%), oil contents (5–30 wt%), and emulsification methods (high-shear homogenization vs sonication) on the emulsion properties were investigated. It was observed that, under both preparation methods, emulsions of small, initial droplet sizes were predominantly formed with CAS content that was higher than 7.5 wt%. Sonication was a more efficient emulsification procedure and was afforded emulsions with smaller droplet size throughout the entire used concentration ranges of oils and CAS when compared to high-shear homogenization. At native pH of ~ 6.5, all of the emulsions exhibited negative zeta potential that originated from the presence of caseinate. The antibacterial activities of both oils and their emulsions were investigated with respect to the growth suppression of common spoilage bacteria while using the disk diffusion method. The oils and selected emulsions were proven to act against gram positive strains, mainly against Staphylococcus aureus (S. aureus) and Bacillus cereus (B. cereus); regrettably, the gram negative species were fully resistant against their action.

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Dinesh, K., A. Tamilvanan, S. Vaishnavi, M. Gopinath, and K. S. Raj Mohan. "Biodiesel production using Calophyllum inophyllum (Tamanu) seed oil and its compatibility test in a CI engine." Biofuels 10, no. 3 (June 13, 2016): 347–53. http://dx.doi.org/10.1080/17597269.2016.1187543.

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K.S.S Rao, Yarrapragada, and B. Bala Krishna. "Modeling diesel engine fueled with tamanu oil - Diesel blend by hybridizing neural network with firefly algorithm." Renewable Energy 134 (April 2019): 1200–1212. http://dx.doi.org/10.1016/j.renene.2018.08.091.

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Wijayanti, Heny Noor, and Yana Luthfiyati. "The Effectiveness Of Giving Calendula Oil On Wound Healing In White Rats (Rattus Norvegicus)." Journal of Midwifery 6, no. 2 (December 27, 2021): 75. http://dx.doi.org/10.25077/jom.6.2.75-79.2021.

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Research Background : In the process of childbirth, there is often a tear in the birth canal, especially in the perineum, which is known as a ruptured perineum. Some herbal ingredients that are thought to be healing wounds are nyamplung seed oil/tamanu oil (Calophyllum inophyllum L.), red ginger oil (Zingiber officinale var rubrum) and marigold flower oil/calendula oil (Calendula officinalis). Calendula ointment has the benefit of healing episiotomy wounds faster than the use of povidone iodine.Research Objective: To determine the effectiveness of giving calendula oil herbal ingredients to wound healing in female white rats.Research Methods: Laboratory experimental research using a completely randomized design using the Post Test Only Control Group Design pattern. The population in this study were female white rats (Rattus norvegicus). The sample selection was used by simple random sampling. Univariate analysis of wound healing was performed to obtain the mean ± SD and bivariate analysis using one-way ANOVA using computer software.The results of the study: The results of statistical tests showed that the One way Anova test obtained p value = 0.000 with a value of = 0.05 (p < ) where the administration of Calendula Oil on white rat wounds was more effective than without treatment.Conclusion: Based on the results of the study, it can be concluded that giving calendula oil to female white rats is effective in healing wounds.

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Sisi, Misel J., M. Rafiuddin Ahmed, and David Rohindra. "Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels." Advances in Mechanical Engineering 12, no. 9 (September 2020): 168781402096235. http://dx.doi.org/10.1177/1687814020962351.

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The performance characteristics of the engine and the emission levels with Copra Oil (CPO), Virgin Coconut (cocos nucifera) Oil (VCO), Tamanu (calaphyllum inopyllum) Oil (TMO), and Nangae (canarium indicum) Oil (NGO) are presented. The oils, obtained from naturally grown trees in Vanuatu, were tested as straight vegetable oils (SVOs) in a Diesel engine and the results are compared with those of neat diesel. The oils were converted to their fatty-acid-methyl-esters (FAMEs) using gas chromatography to determine their fatty acid compositions. The brake thermal efficiency with SVOs was found to be comparable to diesel. The structure of the alkyl chain and the carbon-to-hydrogen ratio were also studied. All the oils have Palmitic acid, Capric acid, Caprylic acid, and Oleic acid as the major fatty acids. The CPO and VCO have higher amounts of Oleic acid, which acts as an additive and breaks up the interaction between the major fatty acids at higher temperatures, reducing the viscosity. Emissions of CO2 were lower while those of CO, NOx, and SO2 were higher with SVOs compared to diesel. The results indicate that the local SVOs are good and inexpensive substitute fuels for Vanuatu that can help the country meet the UN’s sustainable development goals.

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Rao, Yarrapragada K. S. S., and Bala Krishna B. "A Comprehensive Analysis on Biodiesel Blend Model." International Journal of Artificial Life Research 8, no. 2 (July 2018): 25–46. http://dx.doi.org/10.4018/ijalr.2018070102.

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This article addresses the issue regarding the exploitation of conventional fuel diesel. To overcome this issue, the Tamanu oil-diesel oil blend is introduced, where a new neural model is proposed, which is trained by renowned firefly algorithm, termed as FF-NM. In addition, different compression ratios such as 15, 16, 17, 17.5 and blend ratios like 5:95, 6:94, 7:93, 8:92, and 9:91and 10:90 is exploited. The emission analysis and the combustion characteristics of the TO-diesel oil blend are evaluated as well as the MSE analysis is carried out for the proposed FF-NM method. For all the predicted parameters, the MSE of the proposed method is low for varying blend as well as the compression ratios. Moreover, the emission characteristics of the HC, CO2, NOx, CO, as well as O2 at different CR concerning the actual, and FF-NM is computed with the chosen blend ratios. From analysis, it is recognized that the estimation errors are less for the FF-NM approach. Hence, the simulation outcomes demonstrate the better performance of the proposed FF-NM approach under various compression ratios of 15, 16, 17 and 17.5, respectively.

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Yarrapragada, K. S. S. Rao, and B. Bala Krishna. "Impact of tamanu oil-diesel blend on combustion, performance and emissions of diesel engine and its prediction methodology." Journal of the Brazilian Society of Mechanical Sciences and Engineering 39, no. 5 (August 8, 2016): 1797–811. http://dx.doi.org/10.1007/s40430-016-0616-5.

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Perumal, Navaneetha, and Vasudevan Durairaj. "Experimental and analytical investigation on the emission and combustion characteristics of CI engine fueled with tamanu oil methyl esters." Thermal Science 20, suppl. 4 (2016): 1099–109. http://dx.doi.org/10.2298/tsci16s4099p.

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Miraculas, G. Antony, and N. Bose. "Effect of Compression Ratio on Diesel Engine Performance and Emission Fueled with Tamanu Oil Methyl Ester and its Blends." Advanced Materials Research 984-985 (July 2014): 850–54. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.850.

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Biofuels are renewable, nontoxic and ecofriendly fuels that can play an important role in automobile industries. They can successfully replace diesel fuel and helps in decreasing the import of crude oil. The discarded seed ofCalophyllunInophyllumwhich are planted in India mainly to prevent soil erosion is considered as the possible source for extracting biodiesel. Thetamanuoil extracted had a fatty acid value of 48 mg KOH/g, therefore a two stage esterification processes with acid and base catalyst were used for converting it into biodiesel. The fuel was then tested for properties such as viscosity, calorific value and carbon residue using standard test procedures and found to be analogous with diesel, which makes it possible to use this alternate fuel in the existing engine without any modification. A single cylinder, four stroke, constant speed, variable compression ratio, direct injection diesel engine developing 5KW power with provision for computerized data acquisition is used to evaluate the performance and emission characteristics. The test results were analyzed for biodiesel and its blends in comparison with standard diesel at different compression ratios (16:1, 18:1, 20:1 & 22:1). The performance and emission results of the diesel engine revealed that biodiesel can be blended with diesel up to 40% at an optimum CR of 20, in order to get improved performance and reduced emission.

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Ayyasamy, Tamilvanan, Kulendran Balamurugan, and Saravanan Duraisamy. "Production, performance and emission analysis of Tamanu oil - diesel blends along with biogas in a diesel engine in dual cycle mode." International Journal of Energy Technology and Policy 14, no. 1 (2018): 4. http://dx.doi.org/10.1504/ijetp.2018.088279.

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Duraisamy, Saravanan, Balamurugan Kulendaran, and Tamilvanan Ayyasamy. "Production, Performance and Emission Analysis of Tamanu Oil Diesel Blends along with Biogas in a Diesel Engine in Dual Cycle Mode." International Journal of Energy Technology and Policy 14, no. 1 (2018): 1. http://dx.doi.org/10.1504/ijetp.2018.10006861.

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Deepak, Vishnu, S. Arshadarshan, and G. Kasiraman. "Experimental studies on the effect of Carbon nanotube additives with Calophyllum Inophyllum biodiesel in CI engine." Journal of Physics: Conference Series 2054, no. 1 (October 1, 2021): 012052. http://dx.doi.org/10.1088/1742-6596/2054/1/012052.

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Abstract The rapid depletion of Non-renewable fuel sources coupled with environmental degradation, has led us further into the exploration of alternate energy resources. Biodiesels originating from non-edible feedstocks have garnered much attention in a span of few years. The current study focuses on the addition of Carbon Nanotubes in Tamanu oil biodiesel in a Diesel engine. In this study, parameters such as brake thermal efficiency, unburned hydrocarbon, carbon monoxide, and NOx emissions have been studied. The performance of these biodiesel-diesel blends were charted and results are compared with diesel. It is noted that the inclusion of nano-additives in dosages of 30 and 60 ppm enhances brake thermal efficiency, the drawback being increased specific fuel consumption. The emissions of HC, NOx and emissions show a favorable trend with addition of CNT but CO2 emissions were observed to be on the higher side. Also graphs were plotted revealing the relevant combustion characteristics of the test fuels. They are further discussed in detail and a comprehensive conclusion was made.

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Pal, Ravi Raj, Poonam Parashar, Indu Singh, and Shubhini A. Saraf. "Tamanu oil potentiated novel sericin emulgel of levocetirizine: repurposing for topical delivery against DNCB-induced atopic dermatitis, QbD based development and in vivo evaluation." Journal of Microencapsulation 36, no. 5 (July 4, 2019): 432–46. http://dx.doi.org/10.1080/02652048.2019.1637474.

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Maksimović, Zoran. "On Frankincense (Olibanum, Boswellia spp., Burseraceae)." Arhiv za farmaciju 71, no. 1 (2021): 1–21. http://dx.doi.org/10.5937/arhfarm71-29280.

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Boswellia species (Burseraceae) are trees or shrubs whose area of distribution covers the wide geographic area between North Africa and India. After incision, their bark produces oleogum resin known as frankincense (Olibanum). In traditional medicine, frankincense is often used for medical treatment of arthritis, asthma, ulcerative colitis, coughs, sores, and wound healing. Various frankincense preparations are marketed almost exclusively as dietary supplements. Indian frankincense, or Olibanum indicum, is official in the European Pharmacopoeia. The major components of frankincense are boswellic acids, among which the most important and abundant is 3-O-acetyl-11-keto-b-boswellic acid (AKBA). AKBA is a 5-lipoxygenase inhibitor with anti-inflammatory and anti-arthritic effects. Besides, frankincense contains essential oil, whose composition greatly depends on the biological source, as well as arabinogalactans and glycoproteins. In small clinical trials, certain benefits of various frankincense preparations have been demonstrated in cases of ulcerative colitis, bronchial asthma, mild symptoms of irritable bowel syndrome, and various disorders of osteo-muscular system. However, for collagenous colitis and Crohn's disease remission maintenance, the evidence is ambiguous or negative. AKBA-containing extract was found advantageous in patients with osteoarthritis, and to some extent with rheumatoid arthritis. Almost all the trials had serious flaws in experimental design, such as insufficient sample size and/or incomplete reporting of data. For any clinical recommendation of frankincense preparations, larger and better-designed studies are needed.

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Indrajaya, Yonky, Aji Winara, M. Siarudin, Edy Junaidi, and Ary Widiyanto. "ANALISIS KELAYAKAN FINANSIAL PENGUSAHAAN MINYAK KAYU PUTIH TRADISIONAL DI TAMAN NASIONAL WASUR, PAPUA." Jurnal Penelitian Sosial dan Ekonomi Kehutanan 10, no. 1 (March 31, 2013): 21–32. http://dx.doi.org/10.20886/jpsek.2013.10.1.21-32.

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Dutta, Kajal. "Physicochemical Characterization of Cinnamomum Tamala Seed Oil." International Journal for Research in Applied Science and Engineering Technology 10, no. 3 (March 31, 2022): 1809–14. http://dx.doi.org/10.22214/ijraset.2022.40985.

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Abstract: Cinnamomum tamala seeds oil was extracted by an organic solvent and analyzed for its physicochemical properties i.e. acid value, iodine value, moisture content, density and refractive index. The acid value, moisture content and iodine value were 1.118 mg KOH/g oil, 0.101% and 120.32 gI2/100 g respectively. The density and refractive index of the oil were found to be 0.8986 g/cm3 and 1.4685 respectively. Gas chromatographic analysis of Cinnamomum tamala seeds oil detects the unsaturated fatty acids such as linoleic acid (47.01 wt.% ) and oleic acid (26.32 wt.% ) which together account for more than 70% of total fatty acids. The prominent saturated fatty acid present is palmitic acid (18.97 wt.%). Keywords: Cinnamomum tamala, unsaturated acid, Musa balbisiana Colla, transesterification

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Ustyugov, G. V., and V. V. Ershov. "Mud volcanism as a dangerous phenomenon for oil and gas facilities." IOP Conference Series: Earth and Environmental Science 946, no. 1 (December 1, 2021): 012030. http://dx.doi.org/10.1088/1755-1315/946/1/012030.

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Abstract The research dwells on the danger of mud volcanism for human economic activity, namely, oil and gas production. We performed quantitative assessment of mud volcanoes activities, using Azerbaijan and Kerch-Taman region as examples. Average annual number of mud volcanoes eruptions is 3–4 for Azerbaijan and 1–2 for Kerch-Taman region. We estimate the catalogues of mud volcanic eruptions for those areas to be 52 % and 39 % complete, respectively. Mud volcanoes eruptions are quite frequent. In both regions, over 50 % of all recorded eruptions occur within ten years of the latest eruption. Analysis of mud volcanic eruptions catalogues shows that the volume of breccia ejected during an eruption is practically not related to how long the mud volcano was quiescent. Analysis of potential impact of seismicity on mud volcanic activity shows that the probability of mud volcanoes responding to an earthquake is 6 % and 10 % for Azerbaijan and Kerch-Taman region, respectively.

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Satyal, Prabodh, Prajwal Paudel, Ambika Poudel, Noura S. Dosoky, Kiran Kumar Pokharel, and William N. Setzer. "Bioactivities and Compositional Analyses of Cinnamomum Essential Oils from Nepal: C. camphora, C. tamala, and C. glaucescens." Natural Product Communications 8, no. 12 (December 2013): 1934578X1300801. http://dx.doi.org/10.1177/1934578x1300801232.

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This work examines the biological activity of essential oils of Cinnamomum camphora leaves, C. glaucescens fruit, and C. tamala root from Nepal. The oils were screened for phytotoxic activity against lettuce and perennial ryegrass, brine shrimp lethality, and antibacterial, antifungal, cytotoxic, insecticidal, and nematicidal activities. C. camphora leaf essential oil was phytotoxic to lettuce, antifungal to Aspergillus niger, and insecticidal, particularly toward midge and butterfly larvae, fruit flies, and fire ants. C. camphora oil was also toxic to brine shrimp and human breast tumor cells. C. glaucescens fruit essential oil showed notable nematicidal activity, as well as termiticidal and mosquito larvicidal activity. The root essential oil of C. tamala was toxic to mosquito larvae and fire ants.

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Chowdhury, JU, GC Shaha, F. Begum, MNH Bhuiyan, and M. Rahim. "Essential oil composition from fresh and dried leaves of C. tamala." Bangladesh Journal of Scientific and Industrial Research 48, no. 2 (July 21, 2013): 151–54. http://dx.doi.org/10.3329/bjsir.v48i2.15747.

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The essential oil of Cinnamomum tamala Nees grown at laboratory campus of BCSIR, Dhaka was obtained from its fresh and dried leaves by hydrodistillation. The oils were analyzed by GC-MS. The major components in the fresh leaf oil were eugenol (75.28%) followed by spathulenol (10.06%), eugenyl acetate (9.82%) and in the dried leaf oil were eugenol (68.02%), spathulenol (12.73%), methyl eugenol(6.42%), ?-humulene (4.35%) & caryophyllene (3.58%). Bangladesh J. Sci. Ind. Res. 48(2), 151-154, 2013 DOI: http://dx.doi.org/10.3329/bjsir.v48i2.15747

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Bharadwaj, Alok, Arushi Rashi, and Gunjan Garg. "Evaluation of Phytochemical and Antibacterial properties of leaf extract of Cinnamomum tamala oil." Journal of Experimental Biology and Agricultural Sciences 10, no. 2 (April 30, 2022): 416–22. http://dx.doi.org/10.18006/2022.10(2).416.422.

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Cinnamomum tamala, commonly known as tej patta is widely used as a spice in Indian cuisine for its aroma and flavoring property as the leaves contain essential oil. The essential oil is extracted with the help of the Clevenger apparatus using dry leaves. This oil is mainly used as medicine for releasing gas as well as a carminative agent and diuretic agent. It also improves the digestive system and helps in increasing appetite. This study aimed to determine the phytochemical properties and antibacterial potential of different extracts (aqueous, methanol, and acetone) and oil of C. tamala leaves. The phytochemical evaluation shows the presence and absence of alkaloids, flavonoids, phenolic compounds, steroids, tannins, glycosides, terpenoids, saponins, proteins, and carbohydrates in the aqueous, methanol, and acetone extracts. The efficacy of antibacterial properties of prepared extracts was examined against E. coli and Salmonella typhi (gram-negative bacteria) and Staphylococcus aureus and Bacillus subtilis (gram-positive bacteria). These bacterial cultures were obtained from IMTech Chandigarh. From the results of the antibacterial study it has become evident that among three extracts, the maximum zone of inhibition was obtained in the aqueous extract which was followed by methanolic and acetone extract. With the help of a Clevenger apparatus, Bay leaf oil was extracted to establish antibacterial properties. Henceforth, to analyze the antibacterial potential of the oil sample, the test was performed against the mentioned bacterial species (E. coli, Salmonella typhi, Staphylococcus aureus, and Bacillus subtilis) and reported significant antibacterial activities. From the outcome of this study, it has become clear that Bay leaf oil has potent antibacterial properties against selected bacterial species.

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UPADHAYA, Shanti Priya, Mitsunori KIRIHATA, and Itsuo ICHIMOTO. "Cinnamon Leaf Oil from Cinnamomum tamala Grown in Nepal." NIPPON SHOKUHIN KOGYO GAKKAISHI 41, no. 7 (1994): 512–14. http://dx.doi.org/10.3136/nskkk1962.41.512.

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Julimarti, Dessi, and Nurhafizah Nurhafizah. "Peningkatan Motorik Halus Anak Melalui Proses Pembuatan Minyak Kelapa Di Taman Kanak-Kanak Aisyiah Bustanul Athfal Parit." JPGI (Jurnal Penelitian Guru Indonesia) 4, no. 2 (November 30, 2019): 86. http://dx.doi.org/10.29210/02380jpgi0005.

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This study aims to improve the fine motor skills of children in learning through the process of making Coconut Oil in Kindergarten Aisyiyah Bustanul Athfal Parit. The type of research is Classroom Action Research conducted in a cyclical way, namely two cycles each cycle of three meetings. The results showed that fine motor skills in children had not yet developed and continued improvement in the first cycle through the activities of the process of making coconut oil using a variety of tools. In the second cycle achieving optimal results with excellent growing results. Thus it was concluded that the process of making coconut oil can improve the fine motor skills of children in kindergarten Aisyiyah Bustanul Athfal Parit.

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Haneda, Noor Farikhah, and Ajeng Dwi Larasati. "Keanekaragaman Semut (Hymenoptera: Formicidae) di Beberapa Tegakan di Taman Hutan Raya Sultan Thaha Syaifuddin Jambi." Journal of Tropical Silviculture 12, no. 1 (April 15, 2021): 30–35. http://dx.doi.org/10.29244/j-siltrop.12.1.30-35.

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Biodiversity can act as an indicator of the ecological system and as a medium for knowing species changes. Insects are living things in a world that has a high species diversity. One insect that has a functional role in the ecosystem is ants. The purpose of this study was to calculate and analyze diversity of the types of ants in four types of ecosystems and analyze the effect of habitat characteristics on the abundance of ants. Ant sampling using the hand sorting method was taken from the soil and litter parts in four ecosystems, namely secondary forest, ulin stands, oil palm plantations, and rubber stands in Sultan Thaha Syaifuddin Forest Park Batanghari District, Jambi Province. The results showed a total of 940 ants were obtained, from 296 individuals in Secondary Forest, 198 individuals in oil palm plantations, 307 individuals in ulin stand, 139 individuals in rubber stand. Ants are more commonly found in parts of the soil than litter. The highest ant diversity in the soil and litter is found in secondary forest. Environmental factors that influence the presence of ants in each ecosystem are soil temperature and thickness of litter. Keywords: ants, biodiversity, ecosystems, hand sorting, tahura.

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Mir, Showkat R., Mohammed Ali, and Reni Kapoor. "Chemical composition of essential oil ofCinnamomum tamala Nees et Eberm. leaves." Flavour and Fragrance Journal 19, no. 2 (March 2004): 112–14. http://dx.doi.org/10.1002/ffj.1236.

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Ahmed, Aftab, M. Iqbal Choudhary, Afgan Farooq, Bet�l Demirci, Fatih Demirci, and K. H�sn� Can Ba?er. "Essential oil constituents of the spiceCinnamomum tamala (Ham.) Nees & Eberm." Flavour and Fragrance Journal 15, no. 6 (2000): 388–90. http://dx.doi.org/10.1002/1099-1026(200011/12)15:6<388::aid-ffj928>3.0.co;2-f.

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Ikhsani, Hanifah. "ANALISIS VEGETASI DI TAMAN WISATA ALAM (TWA) SUNGAI DUMAI, RIAU." Wahana Forestra: Jurnal Kehutanan 16, no. 1 (February 1, 2021): 25–36. http://dx.doi.org/10.31849/forestra.v16i1.5720.

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TWA Sungai Dumai is a tourist forest area and ensuring the preservation of natural potential. However, there are problems that can disrupt the sustainability of it, including forest and land fires and conversion of land use to agriculture and oil palm plantations. Until now, there is no vegetation analysis using satellite imagery in TWA Sungai Dumai, so it is important to do so that can be managed sustainably. This study classification of vegetation density classes which are presented in the form of a vegetation density class map in it. This research uses Landsat-8 OLI / TIRS images from October 2017 and October 2020 which are processed to determine density class using Normalized Difference Vegetation Index algorithm. The vegetation density class with the highest area in 2017 was the vegetation density class (2380,832 ha or 66,819% of the total area), while the lowest area was the non-vegetation class (75,737 ha or 2,126% of the total area). The vegetation density class with the highest area in 2020 in TWA Sungai Dumai is dense vegetation density class (3205,039 ha or 89,950% of the total area), while the lowest area is non-vegetation class (1,637 ha or 0.046% of the total area)

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Kumar, Suresh, Sunil Sharma, and Neeru Vasudeva. "Chemical compositions of Cinnamomum tamala oil from two different regions of India." Asian Pacific Journal of Tropical Disease 2 (January 2012): S761—S764. http://dx.doi.org/10.1016/s2222-1808(12)60260-6.

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Selifonova, Zh P., and V. K. Chasovnikov. "On conditions of hyperhaline basins of the Taman’ coast of the Black Sea." Marine Biological Journal 1, no. 4 (December 17, 2016): 40–43. http://dx.doi.org/10.21072/mbj.2016.01.4.05.

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The researches of hydrochemistry of water and bottom sediments on pollutants and plankton in hypersalinic Solenoe Lake and Gor’kiy Liman were carried out for the first time. In July 2010 the waters of these basins were characterized by excess of maximum allowable concentration for heavy metals, phenols, biological consumption of oxygen, the bottom sediments — in excess of soil guideline values for heavy metals and oil products. The bloom by the euglenoid Eutreptia sp. was noted in Gor’kiy Liman. Using the parameters of density of the halophilic crustacean Artemia (from 35 to 126 thousand ind./m3, on average 72.7 thousand ind./m3) and of curative property of a brine (166–199 ‰), the ultrahalinic lake Solenoe can be assigned to the group of reservoirs having important regional value. This basin should be included in the specially-protected natural territory “Anapa Spit”.

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Isti'anah, Ismi, Nisa Mubarik Rachmania, and Aris Tjahjoleksono. "Characterization and application of nitrogen-fixing and indole-3-acetic acid producing bacteria A13 in Oil Palm (Elaeisguineensis Jacq.) seedling." Journal of Microbial Systematics and Biotechnology 3, no. 1 (August 31, 2021): 32–40. http://dx.doi.org/10.37604/jmsb.v3i1.77.

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Oil palm plantations have a good prospect in Indonesia. One of the efforts to improve the productivity of oil palm plantation is the application of bacteria as biological fertilizer. The research was conducted to characterize and apply the nitrogen-fixing and indole-3-acetic acid producing bacteria in oil palm seedlings. The bacteria was isolated from soil samples which taken from Taman Nasional Bukit Dua Belas (TNBD) Jambi. Nitrogen free bromthymol blue (NFB) is used as media for nitrogen-fixing bacterial isolation. Selected isolate named A13 had an ability to form white pellicle on the surface of the semisolid medium, increased the pH, and changed the color of medium from green to blue Isolate A13 was identified as Gram-negative bacteria and had a rods shape. Analysis of 16S rRNA gene sequence showed that isolate A13 had a similarity with Pseudochrobactrum assacharolyticum. Hypersensitivity assay on tobacco leaves showed that isolate A13 was not a pathogen. During 48 hours of incubation, isolate A13 produced a maximum of IAA at the 24th hour of incubation. Isolate A13 produced 0.675 ppm of ethylene/hour in Acetylene Reduction Assay and 69,839 ppm of IAA in HPLC methods. This was the first report on nitrogen fixation and IAA production by Pseudochrobactrum assacharolyticum and its application in the soil of oil palm seedlings. Application of isolate A13 in oil palm seedling increased significantly the number of lateral roots, stem diameter, and height of plants

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Badriansyah, Rohmad, Hadinoto Hadinoto, and Muhammad Ikhwan. "KEANEKARAGAMAN JENIS BURUNG DI TAMAN HUTAN RAYA SULTAN SYARIF HASYIM PROVINSI RIAU." Wahana Forestra: Jurnal Kehutanan 14, no. 1 (July 16, 2019): 22–30. http://dx.doi.org/10.31849/forestra.v14i1.2511.

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Birds are an animal that has an important role in the process of forest succession, plays a role in spreading seeds, helping pollination, and balancing ecosystems. Deforestation of forest areas in Riau has a high rate, this can be seen from the change in the function of forests into agricultural and plantation land. The Sultan Syarif Hasyim Forest Park (TAHURA) is a conservation area that has quite alarming conditions, of the forest area of 6,172 hectares, there are only 2,000 hectares left forested, while the rest have acacia forest cover, shrubs, oil palm plantations, rubber plantations . The assessment of bird diversity needs to be carried out in the Sultan Syarif Hasyim Tahura given the high level of habitat destruction. Birds in TAHURA Sultan Syarif Hasyim have 71 species of birds from 34 families and 13 orders, there are 5 nocturnal birds. The diversity index (H) ranges from 3.19 - 3.92, the evenness index type (E) ranges from 0.88 - 0.92 and the species richness index (R) ranges from 2.14 - 4.28.

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Suwedi, Nawa. "MODEL HUBUNGAN WAKTU TERJADINYA TUMPAHAN MINYAK DI SUATU LOKASI DENGAN BENTUK SEBARANNYA PADA DAERAH TERDAMPAK STUDI KASUS: TUMPAHAN MINYAK DI SEKITAR PESISIR LHOKSEUMAWE-NAD." Jurnal Teknologi Lingkungan 18, no. 1 (April 6, 2017): 104. http://dx.doi.org/10.29122/jtl.v18i1.1741.

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"> Maraknya kegiatan eksplorasi dan ekploatasi minyak dan gas bumi yang dilakukan di lepas pantaiLhokseumawe-NAD berpotensi menimbulkan terjadinya tumpahan minyak yang secara langsung jugaberpotensi mengancam kelestarian taman laut nasional dan keindahan lingkungan pantai yang ada disekitar Pulau Weh. Sebagai upaya untuk mengurangi ancaman tersebut, model Oil Spill dapatdigunakan untuk membantu meningkatkan kemampuan dalam penanganan dan penanggulangantumpahan minyak secara dini. Model Oil Spill mempunyai kemampuan untuk mensimulasikanminimum drifting time dan pola sebaran tumpahan minyak yang ada di sekitar perairan Lhokseumawe.Berdasarkan hasil simulasi, pada bulan Januari, Pebruari, Juni, Juli, Agustus, September, Oktober,Nopember, atau Desember tumpahan minyak yang terjadi di sekitar perairan Lhokseumawe akansampai ke Pulau Weh dengan Minimum drifting time berkisar antara 24 jam – 288 jam dan bergantungpada kondisi angin dan arus harian. Pada bulan Maret sebaran tumpahan minyak tidak mencapaipantai Pulau Weh tetapi menyebar cenderung ke sebelah utara Pulau Weh. Pada bulan April atauMei sebaran tumpahan minyak tidak pernah sampai ke Pulau Weh.Kata Kunci: Tumpahan minyak, minimim drifting time, sebaran tumpahan minyak, Lhokseumawe,model

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Arico, Zulfan, and Sri Jayanthi. "Potensi Karbon Tersimpan Hutan Taman Nasional Gunung Leuser Resort Tenggulun Sebagai Upaya Mitigasi Perubahan Iklim." Elkawnie 2, no. 2 (December 31, 2016): 143. http://dx.doi.org/10.22373/ekw.v2i2.2660.

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Gunung Leuser National Park Resort Tenggulun since 1998-2008 continues to plunder its standing in the way was converted into oil palm plantations. The area was damaged forest of 2,200 hectares / year. This study aims to protect and maintain the forest as a climate change mitigation efforts. The method to determine the location of the study using purposive sampling with squares method to determine the density of vegetation. Furthermore, the method of calculation of the carbon stocks stored calculated using allometric equations. From the results, the results of total forest biomass Gunung Leuser National Park Resort Tenggulun amounted to 330.998 tons / Ha. While the amount of carbon stored by 165.999 tons / Ha

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Maria Hasnah, Tri, Eritrina Windyarini, Budi Leksono, Hamdan Adma Adinugraha, and Lukman Hakim. "PERTUMBUHAN BIBIT MALAPARIDARI PROVENAN UJUNG KULON PADA UMUR 5 BULAN DIPERSEMAIAN." Jurnal Pemuliaan Tanaman Hutan 15, no. 1 (June 30, 2021): 37–49. http://dx.doi.org/10.20886/jpth.2021.15.1.37-49.

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Malapari (Pongamia pinnata) is one of tree species belonging to Family of Leguminosae. Malapari seed oil were known as potential source for biofuel. The previous study showed that Provenance from Taman Nasional Ujung Kulon Banten had highest oil content among provenances in Java. Seed exploration was carried out to determine variations among families on oil content and growth performance. This study was conducted to determine the variation among families on growth performance at nursery level. The seedlings were used as planting stocks for Progeny Test establishment. This study was arranged in randomized completely block design with 50 families, 10 seedlings per plot and repeated in 4 blocks resulting the total number of observation units were 2000 seedlings. Seedling survival rate, growth performance (height, diameter, leave number), and sturdiness ratio was measured monthly up to 5 months after sowing. Analyses of variance was used to find out differences among families. Correlation among characters/parameters was analyzed by Pearson Correlation Analyses. The results showed that variations among families were found on seedling growthperformance. The seedling survival rate at the age of 5 months was 84.60% (26,70-100%) with an average growth of 47.10 cm (31,2-59,7 cm) in height, 5.49 mm (4,7-6,5 mm) in diameter, 8.56 for seedlings sturdiness and 15.4 (10,9-18,8) for leave number

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Siddikah, Fatimah, Rizky Nazarreta, and Damayanti Buchori. "Pengaruh musim terhadap kelimpahan kumbang moncong (Coleoptera: Curculionidae) pada tipe penggunaan lahan berbeda di lanskap Hutan Harapan dan Taman Nasional Bukit Duabelas, Jambi." Jurnal Entomologi Indonesia 17, no. 3 (December 11, 2020): 113. http://dx.doi.org/10.5994/jei.17.3.113.

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Land-use change from forest to plantation can cause the loss of various types of insect diversity group, one of which is the beetle group. Curculionids or weevils is one of the largest families in the Order Coleoptera due to its adaptability in almost all habitats in nature. This research is aimed to study the effect of seasonality on species richness and the abundance of weevils in oil palm and rubber plantation in Hutan Harapan and Bukit Duabelas National Park, Jambi. Sample was collected in the dry season and rainy season 2013–2014 by fogging method using pyrethroid knockdown insecticides. In each land use, 4 observation plots were erected with selected 3 points as a subplots, so there are 16 plots or 48 subplots in total. The results showed that 1.761 individuals of weevils from 9 subfamilies and 45 morphospecies. Based on analysis, seasonal difference did not affect species richness and abundance of weevils, while land-use types affect abundance of weevils. Analysis of similarity using Bray-Curtis Index showed 4% of similarity in two land-use types, and 46% of similarity between two seasons. The diversity index in oil palm plantation were lower than rubber plantation. The most dominant species that can be found in both land-use types is Elaeidobius kamerunicus Faust., while Rhynchophorus sp.01 is only found in oil palm plantation, and Curculio sp.04 is only found in rubber plantation.

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Violita, Violita. "Efisiensi Penggunaan Nitrogen (Nue) Dan Resorpsi Nitrogen Pada Hutan Taman Nasional Bukit Duabelas Dan Perkebunan Kelapa Sawit Di Kabupaten Sarolangun, Provinsi Jambi." BioScience 1, no. 1 (March 31, 2017): 8. http://dx.doi.org/10.24036/02017117185-0-00.

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Nitrogen use efficiency (NUE) plays an important role on plant adaptation to the low nutrient conditions. Transformation system from natural forest to oil palm plantation changedthe NUE and soil nutrition in ecosystem. However, how the transformation system affects NUE, N resorption, and soil nutrition in Sarolangun, Jambi province still unknown. The aims of the study were (1) to quantify NUE and Nresorptionand its correlation to N soil content (2)to determine nitrogen loss of litterfall in natural forest (HA) and oil palm plantation (KS) in Sarolangun, Jambi. The result showed that NUE in plant scale (NUE c) influenced by N resorption. NUE c increased with increasing of N resorption. Nitrogen and carbon content of the soil in HA was higher than that of in KS. There was no correlation between N soil content with foliar N content, N resorption, and NUE c. NUE in ecosystem scale (NUEES) was higher in HA than that of in KS. There was 68.3% of total N productionloss or out from the system inKS. Key words: NUE, N soil content, N resorption, transformation system

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Azizah, Mia, Nia Yuliani, and Heriyanto Heriyanto. "CADANGAN KARBON PADA TEGAKAN POHON HUTAN KOTA DI TAMAN MARGASATWA RAGUNAN DKI JAKARTA." Florea : Jurnal Biologi dan Pembelajarannya 6, no. 1 (May 25, 2019): 1. http://dx.doi.org/10.25273/florea.v6i1.4363.

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Increase environmental problems, such as air pollution and temperatures increase in DKI Jakarta, make the existence of urban forests very important. Trees have an important role becausethey function as the most efficient carbon sink and storage in urban areas. Along with the increasing number of visitors carrying vehicles, the higher the potential for air pollution in Ragunan Wildlife Park (TMR). The objectives of this study are: To analyze the community structure of tree species that have potential carbon stocks, and estimate carbon stocks stored in tree trunks. The study was conducted in four regions (north, west, east, south) Ragunan Wildlife Park, DKI Jakarta. Vegetation analysis was carried out by calculating the Important Value Index (INP), and carbon stock analysis was carried out through the Allometric approach. The highest INP value was mahoni (Swietinia macrophylla) amounting to 45.51%, cengal pasir (Hopea odorata) 33.31%, and dao (Dracontomelon dao) 28.26%. The largest amount of carbon reserves is found in the western region, which is 52,503 kg / ha, and the largest contribution of carbon stocks is from dao trees (Dracontomelon dao) of 30,091 kg / ha, cengal sand 25,372 kg / ha, oil palm (Elaeis guinensis).

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Journal articles on the topic 'Tamanu oil'

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