Journal articles: 'Huile de jatropha curcas'

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Adamou, Issa, Zakari Abdoul Habou, Moussa S. Hassimi, Salamatou M. Mamane, and Toudou Adam. "Effet des huiles de pourghère (Jatropha curcas L.) et de neem (Azadirachta indica</ A. Juss) sur le développement in vitro des champignons pathogènes Aspergillus flavus, Aspergillus niger, Curvularia lunata, Fusarium oxysporum et Rhizopus oryzae." International Journal of Biological and Chemical Sciences 14, no. 4 (August 17, 2020): 1282–93. http://dx.doi.org/10.4314/ijbcs.v14i4.10.

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Les huiles de Jatropha curcas communément appelé pourghère et de neem (Azadirachta indica A. Juss), sont testées comme alternatives aux pesticides chimiques dans l’optique d’y déceler de potentiels effets fongicides tout en préservant l’environnement. Les effets des deux huiles végétales sont comparés à ceux de deux fongicides conventionnels, la griséofulvine 250 mg et la nystatine ainsi que l’alcool 95°, sur cinq champignons phytopathogènes (Aspergillus flavus, Aspergillus niger, Curvularia lunata, Fusarium oxysporum et Rhizopus oryzae). Les observations ont porté sur la mesure du diamètre de la zone d’inhibition exercée par les différentes substances inhibitrices à travers les milieux gélosés. Le dispositif expérimental appliqué a été celui du bloc complètement randomisé de Fisher avec huit répétitions. Les moyennes des diamètres de la zone d’inhibition sont respectivement de 26,51 mm pour la nystatine, 14,53 mm pour la griséofulvine, 4,53 mm pour l’huile de neem, 3,05 mm pour l’huile de jatropha, et 0,00 mm pour l’alcool 95°. L’huile de neem a eu un effet inhibiteur net sur la croissance de l’ensemble des champignons testés. En revanche, l’huile de jatropha a exercé un meilleur contrôle de la croissance des espèces Aspergillus flavus, Aspergillus niger et Rhizopus oryzae. Les deux huiles pourraient être recommandées dans la protection des denrées stockées, notamment les céréales.Mots clés : Extraits végétaux, effet fongicide, zone d’inhibition, lutte alternative. English Title: Effect of Jatropha (Jatropha curcas L.) and neem (Azadirachta indica A. Juss) oils on in vitro devloppement of pathogenic funji Aspergillus flavus, Aspergillus niger, Curvularia lunata, Fusarium oxysporum et Rhizopus oryzae Oils of Jatropha curcas (pourghère) and neem (Azadirachta indica A. Juss) were tested as alternatives to chemical pesticides in a view to finding some potential fungicide effects harmless to environment. The effects of the two natural oils were compared with those of two conventional fungicides, griseofulvin 250 mg and nystatin and also alcohol 95° on five phytopathogenic fungi (Aspergillus flavus, Aspergillus niger, Curvularia lunata, Fusarium oxysporum and Rhizopus oryzae). Observations consisted in measuring the diameter of the zone of inhibition by different substances through the agarose medium. The experimental device applied was the Fisher completely randomized bloc with eight repetitions. Means of inhibition zone diameters were respectively de 26.51 mm for nystatin, 14.53 mm for griseofulvin, 4.53 mm for neem oil, 3.05 mm for jatropha oil, and 0.00 mm for alcohol 95°. The neem oil showed good inhibition effect on the growth of the whole set of tested fungi. In contrast, jatropha oil exhibited a better fungal growth control on Aspergillus flavus, Aspergillus niger and Rhizopus oryzae species. Thus, these two vegetable oils could be recommended in cereal protection in postharvest.Keywords: Vegetal oils, fungicide effects, inhibition zone, alternative control.

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Menezes, Ritesh G., Nageshkumar G. Rao, Suman S. Karanth, Asha Kamath, Shahnavaz Manipady, and V. V. Pillay. "Jatropha curcas poisoning." Indian Journal of Pediatrics 73, no. 7 (July 2006): 634. http://dx.doi.org/10.1007/bf02759934.

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Kulkarni, M. L., H. Sreekar, K. S. Keshavamurthy, and Nivedita Shenoy. "Jatropha curcas-poisoning." Indian Journal of Pediatrics 72, no. 1 (January 2005): 75–76. http://dx.doi.org/10.1007/bf02760586.

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Abobatta, Waleed. "Jatropha curcas: an overview." JOURNAL OF ADVANCES IN AGRICULTURE 10 (February 28, 2019): 1650–56. http://dx.doi.org/10.24297/jaa.v10i0.8145.

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Jatropha curcas L. belongs to family Euphorbiaceae, Jatropha curcas is a valuable multi-purpose crop, historically it was used as medicine for wounds and leaves used as drinks against malaria, jatropha plants used to control soil degradation, alleviate erosion, desertification and increase soil fertility, however, in last decades there is more attention to use jatropha oil for produce biodiesel, Jatropha curcas is easily propagated by seeds or stem cutting, it is tolerant for drought for longtime, it is grow well with treated wastewater, also, it can be grown on marginal land. Jatropha curcas seed have about 32-40% valuable oil used to produce biofuel, therefore, it could be the source for biodiesel production particularly in arid and semiarid regions.

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Settineri, Giovanna, Maria Rosaria Panuccio, and Adele Muscolo. "Jatropha Curcas Sludge Valorization." Procedia - Social and Behavioral Sciences 223 (June 2016): 865–70. http://dx.doi.org/10.1016/j.sbspro.2016.05.295.

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Nurhidayanti, Nurhidayanti. "Acute Toxicity Test of Jatropha curcas L. on Nile Tilapia Seeds (Oreochromis niloticus L.)." Science and Technology Indonesia 5, no. 1 (January 30, 2020): 18. http://dx.doi.org/10.26554/sti.2020.5.1.18-22.

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ABSTRACT The study investigating acute toxicity test of Jatropha curcas L. on Nile tilapia seeds (Oreochromis niloticus L.), had been conducted in May 2017, in Balai Riset Perikanan dan Perairan Umum (BRPPU) Mariana, Banyuasin. This study was aimed to determine the concentration of Jatropha curcas seed powder needed to cause 50% death of Nile tilapia seeds (LT50). This acute toxicity test used biological test with exposure time of 96 hours. The concentrations of Jatropha curcas tested were 0 (control), 240, 288, 346, 415, 498, 597, and 716 ppm which were applied for 96 hours. Data were analyzed using Spearman-Karber method with SPSS. Result showed LC50 of 24 hours was 551,271 ppm, LC50 of 48 hours was 466,513 ppm, and LC50 of 96 hours was 393,892 ppm. Meanwhile, LT50 for 597 ppm of Jatropha curcas was 1285, 166 minutes, and LT50 for 761 ppm was 784,121 minutes. The higher the concentration of Jatropha curcas seeds given the fastest time needed to cause the death of Nile tilapia seeds, Jatropha curcas seeds had moderate toxicity. Keywords: Acute toxicity, Jatropha curcas L., Biological test, Oreochromis niloticus L

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Goud, Vaibhav V., Srikanta Dinda, Anand V. Patwardhan, and Narayan C. Pradhan. "Epoxidation of Jatropha (Jatropha curcas) oil by peroxyacids." Asia-Pacific Journal of Chemical Engineering 5, no. 2 (March 2010): 346–54. http://dx.doi.org/10.1002/apj.285.

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Wen, Yuan Guang, Hong Guang Zhu, Min Tang, Fang Chen, Lin Tang, and Ying Xu. "The Distribution And Resource Evaluation of Typical Energy Plants (Jatropha curcas L.) in Guangxi, China." Advanced Materials Research 433-440 (January 2012): 1333–37. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.1333.

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Jatropha curcas L. is an important resource for bioenergy. There are many kinds of energy plants in the world, but they are not utilized sufficiently. Because of the lack of knowledge on resource numbers and distribution of energy plant limited their development. In this paper, we discussed the natural distribution of Jatropha curcas L. in Guangxi province. At the same time, we carried out assessment on the energy plant resource numbers of Jatropha curcas L. in Guangxi. At last, we provided some suggestions for developing of Jatropha curcas L. in China.

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Yamamura, Masaomi, Kinya Akashi, Akiho Yokota, Takefumi Hattori, Shiro Suzuki, Daisuke Shibata, and Toshiaki Umezawa. "Characterization of Jatropha curcas lignins." Plant Biotechnology 29, no. 2 (2012): 179–83. http://dx.doi.org/10.5511/plantbiotechnology.12.0515b.

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Sarathum, S., M. Hegele, and J. N. Wünsche. "MICROPROPAGATION OF JATROPHA CURCAS L." Acta Horticulturae, no. 923 (December 2011): 65–72. http://dx.doi.org/10.17660/actahortic.2011.923.8.

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Currais, L. M., J. M. Canhoto, and P. van der Linde. "MICROSPOROGENESIS IN JATROPHA CURCAS L." Acta Horticulturae, no. 935 (June 2012): 113–20. http://dx.doi.org/10.17660/actahortic.2012.935.16.

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Wang, Xia-Chang, Shi-Ping Ma, Jing-Han Liu, and Li-Hong Hu. "Guaiane Sesquiterpenoids from Jatropha curcas." Natural Product Communications 3, no. 10 (October 2008): 1934578X0800301. http://dx.doi.org/10.1177/1934578x0800301012.

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Two new guaiane sesquiterpenoids named jatrophaols A and B (1, 2), along with three known analogues, were isolated from the roots of Jatropha curcas. Their structures were determined by spectroscopic methods, including 1D and 2D NMR spectroscopy, HR-EI-MS, HR-ESI-MS, and X-ray diffraction, as well as by comparison of their spectral data with those of related compounds.

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Anguessin, Benjamine, Pierre Marie Mapongmetsem, Adamou Ibrahima, and Guidawa Fawa. "Effet de la fertilisation organique à base de litière foliaire de Jatropha curcas L. et Jatropha gossypifolia L. sur la culture de tomate (Lycopersicon esculentum Mill.) à Guider (Nord/Cameroun)." International Journal of Biological and Chemical Sciences 15, no. 2 (June 22, 2021): 524–35. http://dx.doi.org/10.4314/ijbcs.v15i2.12.

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La baisse de la fertilité des sols due à la mauvaise gestion des terres et l’utilisation excessive des engrais chimiques a motivé le regain d’intérêt dans la recherche de fertilisants organiques respectant l’environnement pour un développement durable. Pour évaluer l’efficacité agronomique des litières de Jatropha sur la production de la tomate, une étude a été conduite en champs dans des pots de 20 cm de diamètre. Le dispositif expérimental est un bloc de Fischer randomisé avec un total de 64 pots (4 traitements x 4 répétitions x 4 unités expérimentales). Les résultats ont montré que les litières de Jatropha curcas et Jatropha gossypifolia ont amélioré la croissance et le développement (le diamètre et la ramification de la tige, le nombre de feuille et de fruits ainsi que la masse des fruits) de la tomate par rapport au témoin. La litière de Jatropha curcas a induit une large amélioration de la masse des fruits (33,09 g) par rapport aux autres traitements : le témoin (19,99 g), la litière de Jatropha gossypifolia (20,44 g) et l’engrais chimique (24,02 g). Pour une culture dont on aimerait avoir des gros fruits l’utilisation des fertilisants organiques à base des litières de Jatropha curcas pourrait être conseillée.Mots clés : Fertilisant organique, Litière, Jatropha curcas, Jatropha gossypifolia, Nord-Cameroun. English Title: Effect of organic fertilization based on leaf litter of Jatropha curcas L. and Jatropha gossypifolia L. on the tomato crop (Lycopersicon esculentum Mill.) in Guider (North Cameroon)The decline in soil fertility due to poor land management and excessive use of chemical fertilizers has induced new interest in the quest for environmentally friendly organic fertilizers for sustainable development. To assess the agronomic effectiveness of Jatropha litter on tomato production, a study was conducted in the field in pots of 20 cm in diameter. The experimental set-up is a randomized Fischer block with a total of 64 pots (4 treatments x 4 repetitions x 4 experimental units). The results showed that the litters of Jatropha curcas and Jatropha gossypifolia improved the growth and development (the diameter and branching of the stem, the number of leaves and fruits as well as the mass of the fruits) of the tomato compared to the witness. Jatropha curcas litter induced a large improvement in fruit mass (33.09 g) compared to other treatments: the control (19.99 g), Jatropha gossypifolia litter (20.44 g) and chemical fertilizer (24.02 g). For a crop from which we would like to have larger fruits, the use of organic fertilizers based on Jatropha curcas litter could be recommended.Keywords: Organic fertilizer, Litter, Jatropha curcas, Jatropha gossypifolia, North Cameroon.

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Niagita Wiratni, Ni Made, I. Nyoman Jirna, and IGA Sri Dhyanaputri. "Potensi Antifungi Tangkai Daun Jarak Pagar Terhadap Pertumbuhan Candida albicans." Medical Laboratory Technology Journal 3, no. 2 (December 29, 2017): 63. http://dx.doi.org/10.31964/mltj.v3i2.169.

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Jatropha curcas twigs are part of the Jatropha curcas which can be utilized as herbal treatment by the community to overcome the vaginal discharge problem. Vaginal discharge is a common symptom experienced by most women caused by Candida albicans infection. This research used the true experiment with posttest only control design which aimed to know the content of phytochemistry and antifungal potential of Jatropha curcas twigs extract on Candida albicans growth. Extract of Jatropha curcas in this study was obtained through a solvent extraction process using ethanol 96% by the method of maceration. The method used for the phytochemistry test was a qualitative method, while for the antifungal potential test was done by diffusion method with the concentration of 10%, 25%, 30%, 40% and 50%. The results of Phytochemistry test showed that Jatropha curcas twigs extracts are saponins, tannins, and flavonoids, but no alkaloid compounds were found, however a test result of the antifungal potential test showed that the average diameter of inhibition zone of Candida albicans growth is 0 mm. The conclusion of this study is Jatropha curcas twigs extracts can not inhibit Candida albicans growth, For other researchers which use jatropha curcas twigs, are suggested to do a phytochemical test quantitatively and to test the antifungal potential with dilution method.

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Rohman, Randi Abdur, Dwi Yono, Nurita Toruan-Mathius, and Roy Hendroko. "Analysis of Phorbolester Content During Growth and Development of Jatropha curcas Fruits." KnE Energy 1, no. 1 (November 1, 2015): 125. http://dx.doi.org/10.18502/ken.v1i1.340.

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Utilization of Jatropha curcas seed meal as animal feed is limited by the presence of toxic compounds. Phorbolester present in Jatropha curcas as a family of compounds known to cause a large number of biological effects such as tumor promoters. The aim of this research is measure phorbolester content during growth and development of Jatropha curcas fruit. Phorbolester extracted by sonification method and analysed by UPLC using phosphoric acid and acetonitrile as mobile phase. Jatropha curcas fruit has ripe in the fifth week because of yellowing of fruit capsule. Toxic genotypes of Jatropha curcas has higher phorobol ester content than non-toxic genotypes approximately 182.1 and 55.2 ng/g respectively. Fruit capsule (122.2 ng/g) has higher phorbolester content than fruit seed (115.2 ng/g). It is due to biosynthesis of diterpene that occur in plastid. Biosynthesis of phorbolester possibly occured in initiation and maturation of fruit because the high level of phorbolester occur in the first and fifth week.Keywords: Jatropha curcas, toxic genotypes, non-toxic genotypes, fruit seed, fruit capsule

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Deshmukh, Gopal Kumar, Ammenur Rehman, and Rajesh Gupta. "Experimental Investigations of a Compression-Ignition Engine Fuelled with Transesterified-Jatropha BiodieselDiesel Blend." July 2021 40, no. 3 (July 1, 2021): 474–81. http://dx.doi.org/10.22581/muet1982.2103.02.

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Jatropha-curcas biodiesel has recently been considered as one of the potential renewable energy sources in Asia. This biodiesel is produced through the transesterification process of the non-edible oil obtained from Jatropha-curcas. The properties of this biodiesel are quite similar to those of diesel fuel. However, high viscosity of pure Jatropha-curcas biodiesel adversely affects engine performance. Hence, the percentage of Jatrophacurcas biodiesel that will not cause any adverse effect on the engine must be determined. In this context, this paper experimentally investigates the performance and exhaust emission characteristics of a direct injection compression ignition engine fuelled with 25%, 50% and 100% volume basis Jatropha-curcas biodiesel with diesel. Results showed that the Jatropha-curcas biodiesel and its blends demonstrated lower values for brake thermal efficiency and exhaust emission levels than diesel, but not for nitrogen oxide levels and brake specific fuel consumption. It was observed that the blend containing 25% Jatropha-curcas biodiesel (BD25) was the best alternative for diesel fuel based on engine emissions and overall performance. Therefore, BD25 could be considered a potential alternative fuel for compression ignition engines.

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Wang, Jian, Shu Heng Hu, and Sheng Jun Zhuo. "Study on the Corrosion Inhibition of Extractive from Jatropha curcas L Seed Meal on Copper." Applied Mechanics and Materials 730 (January 2015): 156–59. http://dx.doi.org/10.4028/www.scientific.net/amm.730.156.

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This paper study about different effect of the corrosion of copper in different dosage of Jatropha curcas L seed meal extract in different PH,NaCl and different compound agent. Finally，matching the corrosion effect to the best concentration of the inhibitor with weight-loss method. With the change of Jatropha curcas seedcake extract dosage, the effect has no obvious changes in different PH. With the increase of Jatropha curcas seedcake extract dosage. The higher the concentration of extracting agent to extract effect is better in different NaCl. When Jatropha curcas seedcake extract respectively compounded with 2 kinds of reagent, it enhance the corrosion inhibition of copper .It is shown that best inhibition effect of Jatropha curcas L seed meal extract concentration is 10%, the corrosion rate is 96.38%. And Urotropine effect is not very good, but the corrosion rate can be increased from 25.46% to 75.43%.

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Verma, Ravindra, Dinesh K. Sharma, and Prakash S. Bisen. "Determination of Free Fatty Acid Composition in Jatropha Crude Oil and Suitability as Biodiesel Feedstock." Current Alternative Energy 3, no. 1 (November 28, 2019): 59–64. http://dx.doi.org/10.2174/2405463103666190722163037.

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Background: Jatropha curcas is one of the most suitable plants which seeds are nonedible in nature but rich in oil. Around 350 oil bearing crops are found suitable as potential alternative fuels for diesel engine. Non-edible crop Jatropha curcas has been identified by many experts for biodiesel production in many countries like India. Objective: The objective of this study is to find out the composition of Jatropha curcas oil and its relation with engine parameters. This research covers selected aspects of physical and chemical relation of fatty acid composition of Jatropha curcas oil and its fuel properties. Methods: A gas-chromatograph with high resolution mass spectrometer was used to determine the free fatty acid composition of the Jatropha curcas oil sample. The column length, diameter and thickness were 30m, 0.25mm and 0.25μm respectively. Helium gas was used as carrier gas, column flow of 1.80 mL/min for the GC. Results: The major fatty acids found in Jatropha curcas crude oil were the oleic (3.81%), linoleic (50%), palmitic fatty (35.66%) acid. Some physical and chemical characteristics have been evaluated and found suitable for the application in engine. Oxidation stability oxidizability and cetane number has been calculated as 4.949, 1.076 and found 55.856. Conclusion: The physical and chemical properties of Jatropha crude oil are similar to the biodiesel except the viscosity; therefore, further processing is required. The fuel properties of Jatropha Curcas oil based biodiesel were found to be within the limits of American Society for Testing and Materials (ASTM) specifications for biodiesel and diesel fuel.

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Suhirman, Suhirman, Takdir Tahir, and Saldy Yusuf. "EFEKTIFITAS EKSTRAK TANAMAN JARAK PAGAR (JATROPHA CURCAS L.) TERHADAP PENYEMBUHAN LUKA : LITERATUR REVIEW." Jurnal Ilmiah Keperawatan (Scientific Journal of Nursing) 6, no. 2 (September 30, 2020): 184–91. http://dx.doi.org/10.33023/jikep.v6i2.455.

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Latar belakang : Kandungan ekstrak tumbuhan telah digunakan sudah sejak lama sebagai salah satu metode alternatif/komplementer terutama dalam penyembuhan luka, hanya saja belum terinci sehingga perlu pengujian baik secara in vitro maupun in vivo. Tujuan : Untuk mengetahui sejauhmana efektifitas tanaman Jatropha Curcas L. terhadap penyembuhan luka dengan pendekatan dari beberapa penelitian yang telah ada sebelumnya. Metode : Metode dari tinjauan literature ini menggunakan pedoman Prisma dengan penelusuran artikel ilmiah menggunakan data based Pubmed, Google Scholar dan Science Direct. Melakukan pencarian pada Pubmed dengan kata kunci Extract Jatropha Curcas L. [MeSH Terms] AND wound healing [MeSH Terms], google Scholar dengan kata kunci Extract Jatropha Curcas L AND wound healing, sedangkan Science Direct dengan kata kunci Ekstrak Jatropha Curcas L. AND wound healing Hasil : Dari beberapa artikel penelitian yang telah diulas menunjukkan bahwa efektifitas dari ekstrak tanaman jarak pagar (Jatropha Curcas L.) memiliki pengaruh terhadap penyembuhan luka pada hewan coba tikus Wistar.

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Triyono, Dedi Priadi, Eddy S. Siradj, and Winarto. "Surface Modification of SKD 61 by Electrical Discharge Coating (EDM/EDC) with Multilayer Rectangular Cross-Section Electrode and Jatropha curcas as Dielectric Fluid." Advanced Materials Research 1083 (January 2015): 69–74. http://dx.doi.org/10.4028/www.scientific.net/amr.1083.69.

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Beside being used as alternative fuel, Jatropha curcas can also be use as dielectric fluid in the Electric Discharge Machining (EDM/EDC). The use of Jatropha curcas as dielectric fluid is starting to grow due to its green characteristic. This paper discusses the effects of using Jatropha curcas combined with rectangular cross section layered electrode for cutting SKD 61 steel. It is then compared to the cutting result of EDM process using combination of kerosene dielectric fluid with solid electrode. The outcomes reveal that cutting process using Jatropha curcas as dielectric fluid in lower current produces higher surface roughness and combination of dielectric fluid with electrode type will determine surface roughness, hardness, and white layer thicknesses.

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Gordillo Juan Jorge, Latour, Aguilera Cauich Erick Alberto, Herrera Cool Gilbert Jose, Mellado Mojica Erika, Uc Varguez Alberto, Barba Gonzalez Rodrigo, and Lopez Puc Guadalupe. "GENETIC VARIATION IN A JATROPHA CURCAS JATROPHA INTEGERRIMA HYBRID." International Journal of Advanced Research 7, no. 12 (December 31, 2019): 136–43. http://dx.doi.org/10.21474/ijar01/10137.

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Olukunle, Johnny O., Olubukola T. Adenubi, Gbenga M. Oladele, Emmanuella A. Sogebi, and Patience C. Oguntoke. "Studies on the anti-inflammatory and analgesic properties of Jatropha curcas leaf extract." Acta Veterinaria Brno 80, no. 3 (2011): 259–62. http://dx.doi.org/10.2754/avb201180030259.

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The anti-inflammatory and analgesic properties of the aqueous extract of Jatropha curcas leaves were investigated. Anti-inflammatory effect was studied using acute rat model (carrageenan-induced rat paw oedema) in which aspirin at 150 mg·kg-1, indomethacin at 10 mg·kg-1 (both are standard anti-inflammatory drugs) and aqueous extract of Jatropha curcas leaves at 150 mg·kg-1 were administered orally to 24 Wistar rats 1 h before induction of oedema and compared with a negative control given 10 ml·kg-1 saline. Using the same dose of the plant extract, the analgesic effect of the aqueous extract of Jatropha curcas leaves was also investigated by measuring the number of acetic acid-induced writhing in 18 mice. The mean percentage inhibition of paw volume of rats treated with indomethacin was 83.9% followed by aspirin treated group with 64.3%, and the Jatropha curcas treated group with 60.7%. The mean number of writhing was significantly lower (P < 0.05) in mice given aqueous extract of Jatropha curcas leaves (34.0) compared to the control group (55.8) but higher than that of the standard analgesic, paracetamol (23.5). This result suggests that Jatropha curcas has anti-inflammatory and analgesic properties comparable with those of standard drugs and may be useful for the treatment of painful inflammatory conditions.

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Yang, Qi Liang, Ke Nan Liu, Xiao Gang Liu, and Ming Ke Wang. "Effect of Limited Irrigation on Growth and Water Use of Jatropha curcas L." Advanced Materials Research 518-523 (May 2012): 5251–56. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.5251.

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A pot-grown experiment was conducted to investigate the effect of limited irrigation on growth, storage water amount of every organ and water use of Jatropha curcas L.seedlings. Four watering treatments were designed in the study, i.e. (W1: 0.3θf，W2: 0.5θf，W3: 0.7θf，W4: 0.9θf，θf is the field capacity). Results show that Jatropha curcas L.seedlings has the higher resistance ability to drought-stress, it can survival in lower soil moisture (0.3θf) , and has certain growth potential. Dry mass of every organ in plant shows that shoot＞branch and master rod＞leaf＞root＞petiole. Storage water capability of unit dry mass for every organ in plant shows that petiole＞branch and master rod or shoot＞leaf＞root. Compared to W4 treatments, W2 reduced irrigation water by 27.1%, mean leaf area of Jatropha curcas L.seedlings for W2 reduced by 25.8%, but root-shoot ratio increased by 6.1%, meanwhile, mean storage water capability of unit root, lateral branch and master rod, leaf, shoot and total plant dry mass of Jatropha curcas L.seedlings for W2 increased by 15.4%，1.3%，7.4%，0.6% and 1.8%, respectively. But mean root, shoot and total plant dry mass accumulation of Jatropha curcas L.seedlings for W2 only reduced by 11.4%、17.7%、15.8%, respectively, therefore, irrigation water use efficiency and total water use efficiency of Jatropha curcas L.seedlings for W2 increased by 15.5%，14.9%, respectively. It is clear that W2 treatment not only increased water use efficiency, but increased regulation storage water capability, thus W2 treatment’s Jatropha curcas L.seedlings improved water regulation and controlled water balance capability and resistance ability to drought-stress.

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Triadiati, Triadiati, Kurniati Kurniati, Utut Widyastuti, and Dasumiati Dasumiati. "Androgynomonoecious Jatropha curcas: Chromosomes, Isozymes, and Flowers Gender." HAYATI Journal of Biosciences 26, no. 3 (December 2, 2019): 139. http://dx.doi.org/10.4308/hjb.26.3.139.

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Jatropha curcas (J. curcas) is usually monoecious plants, which have male and female flowers on the same inflorescence. However, J. curcas can be found as an androgynomonoecious plant (have male, female, and hermaphrodite flowers), even though very rare. Androgynomonoecious J. curcas can be identified after six months of planting when it had started flowering. Therefore, it is important to identify the characteristics of androgynomonoecious J. curcas that can differentiate between androgynomonoecious and monoecious plants in earlier stages of growth. The objectives of the research were to observe isozymes, chromosome and flowers gender of androgynomonoecious and monoecious J. curcas Banten and Lampung accessions. Seeds from five genotypes of J. curcas were used in the research. The observation was carried out on the chromosome and isozymes (Peroxidase and Esterase isozymes) could be used as markers to differentiate androgynomonoecious and monoecious plants. Observations about the flower gender from offsprings derived from different seeds were important to know the inheritance of flower gender. The androgynomonoecious and monoecious J. curcas were diploid with number of chromosomes 2n=2x=22. The chromosomes of androgynomonoecious have longer than that of monoecious J. curcas. The isozymes of androgynomonoecious J. curcas had four alleles and monoecious J. curcas (Banten female monoecious) had three alleles. The flower inflorescence and gender derived from androgynomonoecious plants were unstable, due to androgynomonoecious is intermediate state.

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Agusta, Herdhata, and Fifin Nashirotun Nisya. "Jatropha curcas Linn. Response on Nitrogen Deficiency." KnE Energy 2, no. 2 (December 1, 2015): 101. http://dx.doi.org/10.18502/ken.v2i2.363.

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Jatropha curcas development was intended in marginal areas. However, jatropha productivity is still low. It needs adequate nutrient to increase jatropha productivity . This research was undertaken to determine the response of Jatropha on N deficiency and selecting accessions in order Jatropha to grow well in N deficiency condition. The research was done on nutrient culture in 2011. Eleven accession from Indonesia and one accession from Thailand were observed. From the observation, Jatropha need nitrogen to grow. N deficiency reduced leaf number and plant height . N deficiency increasing root length except accessions of IP-1M, Parung Panjang 4, Banten and Lombok. Bima F, Dompu. Banten 1-3-1 and Aceh Besar had better growth in N deficiency that can be measured from the biomass weight and the root length. Keywords: Jatropha; nutrient culture; N deficiency; productivity.

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Guevara-Fefer, Patricia, Gerardo Sánchez-Ramos, Yanely Araceli De-Jesús-Romero, and Nohemí Niño-García. "Jatropha sotoi-nunyezii y Jatropha curcas, especies de Tamaulipas: una comparación desde la perspectiva de los biocombustibles." CienciaUAT 11, no. 1 (August 31, 2016): 91. http://dx.doi.org/10.29059/cienciauat.v11i1.769.

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Las especies del género Jatropha se consideran una alternativa viable para la producción comercial de biodiésel, particularmente J. curcas. Recientemente se describió la especie J. sotoi- nunyezii, con distribución en el estado de Tamaulipas, pero se desconoce si es factible aprovecharla industrialmente. El objetivo del presente trabajo fue obtener y caracterizar la calidad y rendimiento del biodiesel obtenido a partir de J. sotoi-nunyezii, comparándolo con las variedades comerciales de J. curcas tóxica y no tóxica. El aceite de semillas de J. curcas tóxica, J. curcas no tóxica y J. sotoi-nunyezii fue transesterificado para producir biodiésel, y se determinó su composición química (ésteres metílicos de ácidos grasos) por CG-EM. Las semillas de J. soto-nunyezii tuvieron mayor contenido de aceite con respecto a las de J. curcas tóxica y no tóxica (43.5 %, 32.5 % y 33.3 % respectivamente). La eficiencia de conversión a biodiésel fue mayor en J. sotoi-nunyezii con un 87.2 %. La composición química del biodiésel de J. sotoi-nunyezii con respecto al de J. curcas (tóxica y no tóxica) mostró mayor concentración de ésteres metílico insaturados, particularmente linoleato de metilo. Esta característica influyó en los valores calculados de los parámetros de calidad, índice de yodo y número de cetano que comparado con normas de calidad como la EN 14214, indican que el biodiésel de J. sotoi-nunyezii es más susceptible a la oxidación con respecto al biodiésel de J. curcas (tóxica y no tóxica). Por otro lado, el valor calculado de la entalpía de combustión del biodiésel de J. sotoi-nunyezii y J. curcas (tóxica y no tóxica) es similar al del diésel, por lo que ambos valores indican que son biocombustibles con alto contenido energético. Esta comparación permitió considerar a J. sotoi-nunyezii como posible especie promisoria para la producción de biocombustibles de segunda generación.

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Tseng, Yen Kuei. "The Economical and Environmental Advantages of Growing Jatropha Curcas on Marginal Land." Advanced Materials Research 361-363 (October 2011): 1495–98. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.1495.

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Biomass energy is a renewable clean energy, which may transfer the perennial biomass into energy, in additions, the plants will absorb the carbon dioxide in the air to reduce the speed of global warming. In this research, the biomass plant -Jatropha curcas will be cultivated on the poor gravel soil and drought land at Taitung in Taiwan, except the economic benefits, the advantages for the surrounding environment also will be discussed. In economical terms, this study comparing the benefits between glowing Jatropha curcas and the aboriginal people’s traditional crops including corn and millet. The results show that glowing Jatropha curcas harvest in its fourth year is same with planting corn but 25% better than planting millet, and will uprise year after year. As for the advantages for the surrounding environment, glowing Jatropha curcas obscured much more sunlight than other plants, the ground surface cooling effect is more obvious, in gravel soil, it can be reduced 60% ,while in drought land is 25%. For function of soil conservation, the depth and the land coverage area of the plant’s root will be measured for estimation. From the results, one can find that planting Jatropha curcas will be better than planting corn or millet, and the performance will enhancing year after year by lasting for 35~50 years, it means that, Jatropha curcas was definitely a good choice for planting on gravel soil or drought land no matter for economical, environmental or land preservative’s sake.

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Procházka, Petr, Luboš Smutka, and Vladimír Hönig. "Using Biofuels for Highly Renewable Electricity Systems: A Case Study of the Jatropha curcas." Energies 12, no. 15 (August 6, 2019): 3028. http://dx.doi.org/10.3390/en12153028.

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Recent movements for the decarbonization of the electricity sector have become a priority for many countries around the world and will inevitably lead to the sharp decline of fossil-fuel-based energy. Energy from fossil fuels is to be replaced by renewable energy sources (RES), although the transition will neither be cheap nor smooth. One sustainable and environmentally friendly alternative to fossil fuels and which will take a considerable share in the increasing supply of renewable energy resources is biofuels. There are various types of biofuels used in practice; however, biodiesels represent one of the most popular and widespread ones. This paper focuses as a case study on the byproducts of Jatropha curcas, a crop and a plant that is already used for biofuel production and which is subsequently employed in electricity generation in Jatropha curcas producing regions. This paper identifies the limitations and prospects of Jatropha curcas utilization. Also, Jatropha curcas is compared to other materials suitable for biomass generation. An economic analysis for a 2 MW biofuel powerplant was conducted incorporating various market-related risks. The study shows that at current prices, net profitability can be achieved using Jatropha curcas byproducts for producing electricity.

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Barretto, Lília Calheiros de Oliveira, Joicy Manuela Vilanova Gois, Dian Souza Oliveira, Gennaro Junho Gama, Gabriel Francisco Silva, Carla Crislan de Souza Bery, and João Antônio Belmino Santos. "PROSPECÇÃO TECNOLÓGICA SOBRE Jatropha curcas L." Cadernos de Prospecção 7, no. 2 (June 30, 2014): 208–20. http://dx.doi.org/10.9771/s.cprosp.2014.007.022.

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Xu, J. J., and N. H. Tan. "New Lignans from Jatropha curcas Linn." Zeitschrift für Naturforschung B 67 (2012): 0176. http://dx.doi.org/10.5560/znb.2012.67b0176.

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Ranjan, Sanjay, Ruchi Singh, Devendra K. Soni, Uday V. Pathre, and Pramod A. Shirke. "Photosynthetic performance of Jatropha curcas fruits." Plant Physiology and Biochemistry 52 (March 2012): 66–76. http://dx.doi.org/10.1016/j.plaphy.2011.11.008.

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Jain, Siddharth, and M. P. Sharma. "Biodiesel production from Jatropha curcas oil." Renewable and Sustainable Energy Reviews 14, no. 9 (December 2010): 3140–47. http://dx.doi.org/10.1016/j.rser.2010.07.047.

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Liu, Jie-Qing, Yuan-Feng Yang, Cui-Fang Wang, Yan Li, and Ming-Hua Qiu. "Three new diterpenes from Jatropha curcas." Tetrahedron 68, no. 4 (January 2012): 972–76. http://dx.doi.org/10.1016/j.tet.2011.12.006.

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Barahona, E., P. Díaz, V. Castellano, and A. Anadón. "Toxicological profile by Jatropha curcas L." Toxicology Letters 196 (July 2010): S287. http://dx.doi.org/10.1016/j.toxlet.2010.03.905.

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Peng, De-Xing. "Lubricity characteristics of Jatropha curcas biodiesel." Industrial Lubrication and Tribology 69, no. 5 (September 4, 2017): 708–14. http://dx.doi.org/10.1108/ilt-05-2016-0117.

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Purpose Engine component endurance is related to fuel properties. Decreasing the sulfur content of a fuel reduces its lubricity, thus damaging engines and fuel systems. Therefore, promoting the use of a biofuel must involve assessing the functionality and lubricity of the fuel. Design/methodology/approach The ball-on-ring (BOR) wear tester was applied to determine the optimal additive concentration and the mechanism of reduction of the wear and friction of the diesel engine fuel injection system. The lubricating efficiency of the fuels was estimated by using a photomicroscope to measure the average diameter of the wear scar produced on the test ball. An optical microscope and scanning electronic microscope were used for wear surface examinations. Findings The wear test revealed that the wear diameter of the steel ball lubricated with either the pure petrodiesel or 20 Wt.per cent Jatropha curcas biodiesel blends was 1.36 or 1.05 mm, respectively. The experimental results indicated that when Jatropha curcas biodiesel was added into petrodiesels to reduce friction, the wear resistance of the fuel blends increased concurrently with increasing Jatropha curcas biodiesel concentration. This was attributed to the presence of stearic acid in Jatropha curcas biodiesel blends. Stearic acid has a strong affinity for metal surfaces; therefore, a chemical coating was formed between the two motion surfaces to protect the two contacted surfaces from wear. Therefore, the proposed Jatropha curcas biodiesel can be used to effectively enhance the lubricity of a petrodiesel under the condition of boundary lubrication. Originality/value Using biofuels as the fuels for diesel engines can assist developed and developing countries in reducing the impacts of their fossil fuel consumption on the environment.

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Xu, Jun Ju, and Ning Hua Tana. "New Lignans from Jatropha curcas Linn." Zeitschrift für Naturforschung B 67, no. 2 (February 1, 2012): 176–80. http://dx.doi.org/10.1515/znb-2012-0211.

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Four new lignans, curcasinlignan A (1), curcasinlignan B (2), curcasinlignan C (3), and curcasinlignan D (4), together with eight known compounds, (±)-rel-(2α,3β )-7-Omethylcedrusin (5), (±)-7R∗,8S∗-5-methoxydihydrodehydroconiferyl alcohol (6), dehydrodiisoeugeno1 (7), (threo)-1-(4-hydroxy-3-methoxyphenyl)-2-(4-formyl-2-methoxy-phenoxy)-propane- 1,3-diol (8), (±)-machilin D (9), (+)-pinoresinol (10), 5ʹ-methoxypropacin (11), and hemidesmin-2 (12), were isolated from the aerial parts of Jatropha curcas. Their structures were established on the basis of extensive spectroscopic analysis.

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Ravindranath, N., C. Ramesh, and Biswanath Das. "A rare dinorditerpene from Jatropha curcas." Biochemical Systematics and Ecology 31, no. 4 (April 2003): 431–32. http://dx.doi.org/10.1016/s0305-1978(02)00166-7.

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T.I,, Olasheu, Adebiyi K.A,, Durowoju M.O,, and Odesanya K.O. "Determination of Some Physical Properties of Jatropha (Jatropha Curcas) Oil." International Journal of Engineering Research 4, no. 6 (June 1, 2015): 331–38. http://dx.doi.org/10.17950/ijer/v4s6/612.

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Rakshit, K. D., J. Darukeshwara, K. Rathina Raj, K. Narasimhamurthy, P. Saibaba, and S. Bhagya. "Toxicity studies of detoxified Jatropha meal (Jatropha curcas) in rats." Food and Chemical Toxicology 46, no. 12 (December 2008): 3621–25. http://dx.doi.org/10.1016/j.fct.2008.09.010.

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Garnayak, D. K., R. C. Pradhan, S. N. Naik, and N. Bhatnagar. "Moisture-dependent physical properties of jatropha seed (Jatropha curcas L.)." Industrial Crops and Products 27, no. 1 (January 2008): 123–29. http://dx.doi.org/10.1016/j.indcrop.2007.09.001.

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Puspitasari, Santi, Hani Handayani, R. Siti Noviani Melinda, and Yoharmus Syamsu. "OPTIMALISASI KADAR ABU DALAM PEMBUATAN MINYAK JARAK PAGAR TERVULKANISASI." Jurnal Sains Natural 2, no. 1 (November 25, 2017): 35. http://dx.doi.org/10.31938/jsn.v2i1.33.

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Optimization of Ash Content on the Synthesize of Vulcanized Jarak Pagar (Jatropha curcas) Oil Developments in the preparation of rubber compound formulations should be followed by a rubber compounder, especially in modifying the formula. Rubber compound composed of rubber as an elastomer and its chemical. Each ingredient has a specific function and influence to the properties of rubber articles. The research studied the formulation of vulcanized oil of Jatropha curcas to obtain the best quality in terms of ash content. The experiment begins with the characterization of Jatropha curcas oil and testing of ash content of each component in the formulation of vulcanized Jatropha curcas oil. The results was used as the basis for formulation of vulcanized Jatropha curcas oil components. Vulcanized Jatropha curcas oil was synthesized at the laboratory scale (100 g oil / batch) at 140OC temperature, agitation speed of 100 rpm, and the variation of dose Na2CO3 and ZnO (0.25; 0.50, and 0.75 pho). Vulcanized Jatropha curcas oil obtained were analyzed for visualization of physical and chemical properties. The experimental results showed that the lowest of ash content of vulcanized Jatropha curcas oil was of 1.24% obtained from the reaction by the addition of 0,25 pho of Na2CO3 and 0,50 pho of ZnO. This dose was defined as the optimal dose because it gived the ash content that meets the requirements of commercial vulcanized oil (max 1.5%).Keywords: Rubber compound, elastomer, Jatropha curcas oil ABSTRAK Perkembangan teknik formulasi dalam penyusunan kompon karet harus dapat diikuti oleh rubber compounder terutama dalam memodifikasi formula tersebut. Kompon karet tersusun atas karet sebagai elastomer dan bahan kimianya. Setiap bahan kimia karet memiliki fungsi dan pengaruh yang spesifik terhadap sifat barang jadi karet. Pada penelitian ini dipelajari formulasi bahan dalam pembuatan minyak tervulkanisasi agar diperoleh mutu terbaik ditinjau dari segi kadar abu. Percobaan diawali dengan karakterisasi minyak jarak pagar dan pengujian kadar abu setiap komponen dalam formulasi minyak jarak pagar tervulkanisasi. Hasilnya digunakan sebagai dasar penyusunan formulasi komponen minyak jarak pagar tervulkanisasi. Minyak jarak pagar tervulkanisasi dibuat pada skala laboratorium (100 g minyak/batch) pada suhu 140oC, kecepatan pengadukan 100 rpm, dan variasi dosis Na2CO3 serta ZnO (0,25; 0,50; dan 0,75 bsm). Minyak jarak pagar yang diperoleh dianalisis visualisasi fisik dan sifat kimianya. Hasil percobaan menunjukkan bahwa kadar abu minyak jarak pagar tervulaknisasi terendah sebesar 1,24% diperoleh dari reaksi dengan penambahan 0,25 bsm Na2CO3 dan 0,50 bsm ZnO. Dosis ini ditetapkan sebagai dosis optimal karena memberikan kadar abu yang memenuhi persyaratan minyak nabati tervulkanisasi komersial (maks 1,5%).Kata kunci: Kompon karet, elastomer, minyak jarak pagar

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Marques, Marina Gabriela, Aparecido Alves Serafim Ferreira, Amanda Tavares Da Silva, Anne Silva Martins, Fernanda Correa, Carolina Dos Santos Galvão, and Fábio Santos Matos. "AVALIAÇÃO CIENCIOMÉTRICA DA PRODUÇÃO CIENTÍFICA DE PLANTAS DE Jatropha curcas L." Revista Agrotecnologia - Agrotec 9, no. 1 (June 4, 2018): 26. http://dx.doi.org/10.12971/2179-5959/agrotecnologia.v9n1p26-34.

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O presente trabalho teve como objetivo estudar e avaliar a quantidade e qualidade das publicações científicas com Jatropha curcas abordando Biodiesel, Genética, Biotecnologia, Farmacologia, Pragas e Doenças. Para análise cienciométrica sobre Jatropha curcas foram obtidos dados no período entre 2015 e 2016 no laboratório de informática da Universidade Estadual de Goiás-Câmpus Ipameri/GO acessando a plataforma Thomson Reuters (ISI-Web of Science), avaliando-se os artigos com base na busca dos termos chave “Jatropha curcas” e “phisic nut’. O conjunto de artigos foi organizado conforme os temas: Biodiesel, Genética, Biotecnologia, Farmacologia, Pragas e Doenças, em seguida, catalogadas as seguintes informações: Tema, título, número de autores, país de desenvolvimento, nome do periódico e fator de impacto (Journal Citations Reports-JCR). As pesquisas com Jatropha curcas são voltadas principalmente para produção de biodiesel em função do elevado teor de óleo nas sementes desta espécie. A literatura é escassa de informações a respeito dos estresses bióticos (pragas e doenças) para a cultura do pinhão manso. Os países que mais publicam trabalhos científicos com Jatropha curcas nos temas de biodiesel, genética, biotecnologia, farmacologia, pragas e doenças são Índia, China, Brasil, Malásia e Tailândia. A maior parte dos trabalhos apresentam baixo fator de impacto (JCR) e disponibilizados principalmente em língua inglesa.

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Wu, Jun, and Junhui Zhang. "Research and Development of Natural Vegetable Insulating Oil Based on Jatropha curcas Seed Oil." Energies 13, no. 17 (August 20, 2020): 4319. http://dx.doi.org/10.3390/en13174319.

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Jatropha curcas is a natural non-food resource with high oil-content seeds, that has attracted worldwide attention as it is an ideal renewable resource for the production of biofuels. With the increasing use of vegetable insulating oil in related industries, it is valuable to develop the vegetable insulating oils from Jatropha curcas seed oil. This study explores how to use Jatropha curcas seed oil to prepare high-quality natural vegetable insulating oil. A six-step process is first established according to the optimization results of alkali refining, activated clay treatment and alumina treatment of Jatropha curcas seed oil, combined with cold treatment, water washing and high temperature decompression treatment. Physicochemical and electrical performance tests show that most of the properties of the prepared vegetable insulating oil are significantly improved compared with the original seed oil, and meet the standard requirements for vegetable insulating oil, especially with no sulfur corrosion, a breakdown voltage of 72 kV and an acid value (KOH, potassium hydroxide) of 0.012 mg/g.

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Queiroz, Messias F. de, Pedro D. Fernandes, José Dantas Neto, Nair H. C. Arriel, Francisco J. L. Marinho, and Saulo F. Leite. "Crescimento e fenologia de espécies de Jatropha durante a estação chuvosa." Revista Brasileira de Engenharia Agrícola e Ambiental 17, no. 4 (April 2013): 405–11. http://dx.doi.org/10.1590/s1415-43662013000400008.

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Jatropha curcas L., Jatropha mollissima (Pohl) Baill e Jatropha gossypiifolia L. são Euforbiáceas com potencial para produção de biodiesel e uso na indústria farmacêutica e em cosméticos. Objetivou-se, com este trabalho, avaliá-las em termos de crescimento e fenologia em pesquisa de campo. Adotou-se o delineamento experimental em blocos casualisados contendo na parcela 18 plantas e tendo área útil de 15 m². Nos estudos fenológicos das plantas foram consideradas as seguintes fases: estabelecimento/crescimento vegetativo, floração, frutificação e maturação/colheita. As fases fenológicas das espécies diferiram cronologicamente. Jatropha mollissima cresceu mais do que as outras espécies em altura de plantas enquanto Jatropha curcas cresceu mais em diâmetro caulinar. As maiores taxas de crescimento relativo em altura de plantas ocorreram durante o crescimento vegetativo com os maiores valores sendo registrados em Jatropha mollissima enquanto as maiores taxas de crescimento relativo, também no crescimento vegetativo, foram registradas em Jatropha curcas. As menores taxas de crescimento relativo em altura de plantas e diâmetro caulinar das espécies estudadas coincidiram com as fases reprodutivas.

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BAIDENG, E. L., J. J. PELEALU, B. H. ASSA, and H. A. W. LENGKEY. "EFFICACY OF JATROPHA CURCAS L. SEED EXTRACT ON MORTALITY OF CABBAGE CROP LARVAE (CROCIDOLOMIA BINOTALIS ZELLER: LEPIDOPTERA: PYRALIDAE)." Cercetari Agronomice in Moldova 53, no. 3 (October 16, 2020): 307–13. http://dx.doi.org/10.46909/cerce-2020-026.

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Along with the awareness to obtain quality plant products, the use of plant-based insecticides is increasingly being used. One of the plants used as a plant-based insecticide is Jatropha curcas L. (Jarak pagar) because it contains toxic ingredients to kill cabbage caterpillar pests (Crocidolomia binotalis). This study aims to determine the effectiveness of Jatropha curcas L. on the mortality of Crocidolomia binotalis cabbage caterpillars. The research method used was a Completely Randomized Design (CRD) 7 × 3, consisting of seven treatment concentrations (0,000 ppm, 10,000 ppm, 20,000 ppm, 30,000 ppm, 40,000 ppm, 50,000 ppm, 60,000 ppm), with three replications. Observations were made at 24, 48, 72, 96, 120, 144 hours after application (HAA) of Jatropha. The research activities were carried out in two stages, namely 1) the extraction stage of Jatropha curcas L. seeds and the breeding of the Crocidolomia binotalis test larvae and 2) the testing stage with seven concentration levels of Jatropha curcas L. extract as a plant-based insecticide. ANOVA test showed that the treatments of Jatropha curcas L. extract gave the death effect on larvae [F-count > F-table (116.8 > 2.37)]. Dead larvae change color to black and their body shape will curve. The fastest larval death occurs 24 HAA, with a concentration of 40,000 ppm, which is 50%. At lower concentrations (30,000 ppm), which can kill larvae up to 50%, occurs 120 HAA. With a concentration of 50,000 ppm, 90% of larvae can be killed occurring 96 HAA.

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., Surahmaida, and Sarwoko Mangkoedihardjo. "Uji Kemampuan Tanaman Jarak Pagar (Jatropa curcas) Dalam Meremediasi Tanah Tercemar Logam Berat Kadmium (Cd)." Journal of Pharmacy and Science 2, no. 2 (July 7, 2017): 30–34. http://dx.doi.org/10.53342/pharmasci.v2i2.78.

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ABSTRAKPerkembangan industri yang semakin pesat secara tidak langsung menimbulkan pencemaran lingkungan di sekitarnya. Salah satunya adalah pencemaran tanah oleh logam berat yang dihasilkan dari hasil industri tersebut. Metode yang dapat digunakan untuk meremediasi lahan tercemar yaitu dengan menggunakan tanaman (fitoremediasi). Jarak pagar (Jatropha curcas) merupakan tanaman tahunan dari famili Euphorbiaceae yang umumnya digunakan sebagai tanaman penghasil biodiesel, tanaman pembatas pagar dan tanaman hias. Tujuan dari penelitian ini untuk mengkaji kemampuan jarak pagar dalam meremediasi Cd: untuk mengetahui pengaruh Cd terhadap tinggi tanaman dan luas daun; dan nilai persentase reduksi tanah yang tercemar Cd; dan nilai persentase akumulasi logam Cd dalam jarak pagar. Penelitian eksperimental ini dilakukan dengan menggunakantanah taman; limbah Cd buatan dengan konsentrasi 5 ppm, 15 ppm, 25 ppm, 35 ppm dan 45 ppm; dan Spektrofotometer Serapan Atom (AAS) untuk pengujian logam berat Cd pada tanaman jarak pagar. Data yangdiperoleh dari penelitian ini menunjukkan bahwa Cd berpengaruh terhadap tinggi tanaman dan luas daun; nilai persentase reduksi tanah tercemar Cd yaitu sebesar 76-91%; jarak pagar mempunyai kemampuan dalam mengakumulasi Cd; dan nilai persentase akumulasi logam Cd dalam jarak pagar adalah 46-125%.Kata kunci: Logam Berat Cd, Jarak pagar (Jatropha curcas), FitoremediasiABSTRACTThe rapid development of the industry indirectly lead to pollution of the surrounding environment. One of them is the contamination of the soil by the heavy metals resulting from the industry. The method that can be used to remediate contaminated land is by using plants (called phytoremediation). Jatropha curcas plant is an annual plant of the Euphorbiaceae family that is commonly used as a biodiesel producing plant, fence limiting plants and as ornamental plants. The purpose of this research is to assessing the ability of Jatropha curcas in remediating Cd; to know the effect of Cd on plant height and leaf area; and the percentage value of Cd contaminated soil reduction; and the percentage value of Cd metal accumulation in Jatropha curcas. This experimental study was conducted using garden land; artificial Cd waste with concentration 5 ppm, 15 ppm, 25 ppm, 35 ppm and 45 ppm; and Atomic Absorption Spectrophotometer (AAS) for testing of heavy metal Cd onJatropha curcas. Data obtained from this research indicate that Cd effect on plant height and leaf area; the percentage value of contaminated soil reduction Cd is equal to 76-91%; Jatropha curcas has the ability toaccumulate Cd; and the percentage value of Cd metal accumulation in Jatropha curcas is 46-125 %.Key Words: : Heavy Metal Cd, Jatropha curcas Plant, Phytoremediation

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Gosal, Angel T., Edwin De Queljoe, and Elly J. Suoth. "UJI AKTIVITAS ANTIPIRETIK EKSTRAK ETANOL DAUN JARAK PAGAR (Jatropha curcas L.) PADA TIKUS PUTIH JANTAN (Rattus norvegicus) GALUR WISTAR YANG DIINDUKSI VAKSIN DPT." PHARMACON 9, no. 3 (August 9, 2020): 342. http://dx.doi.org/10.35799/pha.9.2020.30017.

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ABSTRACTJatropha curcas L. leaves is plants containing saponins, flavonoid compounds such as kaempferol, nicotoflorin, quersitin, astragalin, ricinin and vitamin C. Flavonoids showed more than one hundred kinds of bioactivity, which is antipyretic, analgesic and anti-inflammatory effects. Several researches informed that flavonoid compound had antipyretic activity. The aim of this study was to examined the effect of ethanolic extract of Jatropha curcas L. leaves as antipyretic on white Wistar male rats (Rattus norvegicus) induced with DPT. There were 15 rats tested, divided into 5 groups that is negative control (CMC 1%), positive control (paracetamol) and treatment group of physic nut leaves extract 200 mg, 400 mg and 800 mg. Every rat was induced by fever using 0,4 ml of DPT vaccine intramuscularly. The temperature was measured before the rats were induced, 2-3 hour after induced and every 30 minute for 3 hours. The data obtained were analyzed by ANOVA (Analysis of Variants) and LSD. The results showed that the dose group of Jatropha curcas L. leaves ethanol extract had comparable activity with positive control of paracetamol in reducing fever. The conclusion was the ethanol extract of Jatropha curcas L. leaves has an antipyretic activity that could reduce temperature on white Wistar male rats at a dose of 200 mg, 400 mg and 800 mg. Keywords: Jatropha curcas L., antipyretic, Rattus norvegicus ABSTRAKDaun Jarak Pagar (Jatropha curcas L.) merupakan tanaman yang mengandung saponin, senyawa flavonoida antara lain kaempferol, nikotoflorin, kuersitin, astragalin, risinin dan vitamin C. Flavonoid menunjukkan lebih dari seratus macam bioaktivitas, antara lain efek antipiretik, analgetik dan antiinflamasi. Penelitian ini bertujuan untuk menguji aktivitas antipiretik ekstrak etanol daun jarak pagar (Jatropha curcas L.) terhadap tikus putih jantan galur wistar (Rattus norvegicus) yang diinduksi vaksin DPT. Hewan uji yang digunakan sebanyak 15 ekor dan dibagi menjadi 5 kelompok yaitu kontrol negatif (CMC 1%), kontrol positif (parasetamol) dan kelompok dosis uji yaitu pemberian ekstrak daun jarak pagar 200 mg, 400 mg dan 800 mg. Setiap tikus diinduksi demam dengan vaksin DPT dosis 0,4 ml secara intramuskular. Pengukuran suhu dilakukan sebelum induksi, 2-3 jam setelah pemberian induksi dan setiap 30 menit selama 3 jam. Data yang diperoleh dianalisis dengan menggunakan uji ANOVA (Analysis of Variance) dan uji LSD (Least Significant Different). Hasil penelitian menunjukkan bahwa kelompok dosis ekstrak etanol daun jarak pagar memiliki aktivitas yang sebanding dengan kontrol positif parasetamol dalam menurunkan demam. Kesimpulannya ekstrak etanol daun jarak pagar (Jatropha curcas L.) memiliki aktivitas antipiretik yang dapat menurunkan suhu tubuh pada tikus putih jantan galur wistar (Rattus norvegicus) pada dosis 200 mg, 400 mg dan 800 mg. Kata kunci: Jatropha curcas L., antipiretik, Rattus norvegicus

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Muniz, Dandara Rego, Iasmine Ramos Zaidan, Luiz Antônio dos Santos Dias, João Paulo Viana Leite, and Juliana Aparecida Diniz. "Biocide Potential of Jatropha curcas L. Extracts." Journal of Biology and Life Science 11, no. 2 (April 16, 2020): 138. http://dx.doi.org/10.5296/jbls.v11i2.17341.

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Jatropha curcas L., a multipurpose oilseed plant, is very important for biodiesel production; it also has a wide range of bioactive compounds with medicinal properties and biocidal activity for control of crop pests and diseases. This review presents the state-of-the-art of the biocidal activity of J. curcas extracts. Chemical constituents such as phorbol esters are responsible for high bioactivity of J. curcas, due to their toxicity to humans and animals and to their high fungicidal and insecticidal activity. The fungicidal activity of these constituents may be due to destroy endoplasmatic reticulum and hyphae cell walls. The activity of these compounds on insect pest metabolism is well known, leading to an antifeedant effect, repellency, mating inhibition, oviposition inhibition or suppression and/or induction of infertile egg production, and inhibition of larva, nymph, and pupa development. Several studies have shown that although all organs of J. curcas plant are toxic, the degree of toxicity varies in accordance with the extract formulation, the nature of the active substance, the administration rate and procedure, and the individual sensitivity of pests and diseases. Thus, J. curcas stands out as a promising species for bioenergy purposes, as well as for control of pests and diseases that affect agriculture production.

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., Matori, Roy Hendroko, Dwi Yono, and Agus S. Yudhanto. "Study of Combination Biofertilizer for Increasing Production of Jatropha curcas (Jatropha curcas, linn)." KnE Energy 1, no. 1 (November 1, 2015): 113. http://dx.doi.org/10.18502/ken.v1i1.333.

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Bio fertilizer is the collective name for all types of organic materials from plants and animals, that can be reorganized into nutrient available to plants. In Permentan No.2/Pert/Hk.060/2/2006 about Bio fertilizer and soil improvement, Explained that fertilizer is largely Bio fertilizer or all contain organic fertilizer from plants or animals and who have been through the engineering process, solid or liquid form can be used to supply organic material to repair the physical, chemical, and biological land. Definition of Bio fertilizer is more on the C-organic content or organic materials than nutrient level; level C-organic that's what being a differentiator with the organic fertilizers. Two different treatment were imposed, i.e., POH: with bio fertilizer and POH+VAM: with VAM addition. Between this fertilizer, all of observed variables were not significant different.Keywords : POH, Material organic, Nutrient Contain

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Triyono, Joko Riyono, Nur Fadli, and Daisman Purnomo Bayyu Aji. "The Effects of Dielectric Fluid Viscousity on Chips Formation Rate and Electrode Wear Rate in Electrical Discharge Machining of SKD 61 Steel." Materials Science Forum 929 (August 2018): 177–85. http://dx.doi.org/10.4028/www.scientific.net/msf.929.177.

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Electrical Discharge Machining (EDM) is a machine for cutting workpieces with thermal energy derived from electrical spark from tool (cathode) to workpiece (anode). As EDM process requires a dielectric fluid in the cutting operation, the characteristics of the dielectric fluid play an essential role for obtaining excellent cutting. Jatropha curcas has been demonstrated for use as a dielectric fluid in EDM process. However, the drawback is that the Rate of Metal Removal (RMR) is lower than that of generally-used dielectric fluid in industry. We consider that the cause is a much higher viscousity of the jatropha curcas. This study was conducted to investigate the characteristics of a new dielectric fluid mixture of jatropha curcas and kerosene. Kerosene was used in the mixture to reduce the viscousity of the jatropha curcas since the kerosene has a much lower viscousity. The measurement of the viscousity of the fluid mixture was performed using an Ostwald viscousimeter. Evidently, when the jatropha curcas mixed with the kerosine the viscousity of the mixture is lower than that of the pure jatropha curcas. The effects of the viscousity of the fluid mixture were investigated by measuring the RMR and Tool Wear Rate (TWR). The RMR and TWR were determined by calculating the difference in the weight of the workpiece and the tool, respectively, before and after the cutting for a certain cutting interval. The measurements were carried out for eleven different concentration of the fluid mixture by varying the current of 15 and 21 Amp, with replication of 3 times. As the result, the energy released during the cutting process affects the values of TWR and RMR. It was also found that in contrast to the effect on TWR, the RMR was not influenced by the viscousity of the mixture.

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Journal articles on the topic 'Huile de jatropha curcas'

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