Due to its large number of potential utilizations Jatropha curcas L. (physic nut, purging nut), a tropical plant cultivated in many Latin American, Asian and African countries, has become topic of various research projects. Nutritional as well as technical applications, however, are restricted due to the plant’s toxicity. The seed oil contains phorbol esters, a family of compounds known to caus...

A technique to produce biodiesel from crude Jatropha curcas seed oil (CJCO) having high free fatty acids (15%FFA) has been developed. The high FFA level of JCJO was reduced to less than 1% by a two-step pretreatment process. The first step was carried out with 0.60 w/w methanol-to-oil ratio in the presence of 1% w/w H(2)SO(4) as an acid catalyst in 1-h reaction at 50 degrees C. After the reacti...

Biodiesel has an important role in the world of transportation and its existence is taken into account. So availability biodiesel fuel future will be difficult to eliminate must continue fulfilled. Therefore, it necessary innovate increase fuel. can made from biological materials includes renewable energy as a substitute for diesel oil. The production this study jatropha waste cooking oil raw m...

Jatropha integerrima Jacq. (Euphorbiaceae) is an erect ornamental shrub, native to West Indies. The plant has numerous applications in traditional medicine but there is a lack of data related to the standards of roots of the plant. So pharmacognostical study and parameters related to physico-chemical properties have been assessed. Macroscopy and microscopy of transverse section were performed. ...

Jatropha curcas L., a drought tolerant, monoecious perennial shrub, has gained attention in the tropics and sub-tropics during the past decade as a potential biodiesel crop. Adequate genetic diversity for key agronomic traits is of fundamental importance in crop improvement programmes particularly for crops such as J. curcas, which are in the early stages of domestication. In J. curcas, genetic...

In recent years, Jatropha curcas L. has gained popularity as a potential biodiesel plant. The varying oil content, reported between accessions belonging to different agroclimatic zones, has necessitated the assessment of the existing genetic variability to generate reliable molecular markers for selection of high oil yielding variety. EST derived SSR markers are more useful than genomic markers...

Jatropha curcas L. is one of the seed plants that have lipase activity and can work well in hydrolysis reactions chemical synthesis. This study aims to determine reacts with castor oil organic solvents. In this research, solvents, especially hydrophobic were used reaction increase lipase's catalytic activity. The solvent has a hydrophobicity level between 2 4, namely hexane. research stages con...

Biodiesel, as renewable and biological origin alternative diesel fuel, has been receiving a lot of concern throughout the world due to the energy needs and environmental awareness. However, at present, it is not economically feasible to use food-grade vegetable oils to produce biodiesel because of the surge in feedstocks price. Much attention has been devoted to the application of lower-cost fe...

In this study, a simple and effective technique for establishing an external mass transfer model in a recirculated packed-bed batch reactor (RPBBR) with an immobilized lipase enzyme and Jatropha oil system is presented. The external mass transfer effect can be represented with a model in the form of Colburn factor JD = K Re. The value of K and n were derived from experimental data at different ...