30 research outputs found
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No full textNot AvailableA study was conducted during 2005-06 in Hyderabad, Andhra Pradesh, India, to assess the variability in seed parameters of 63 Jatropha curcas accessions. Various biometric and biochemical parameters of the seed were evaluated. Among the seed traits studied, seed length ranged from 15.1 to 19.6 mm and seed width ranged from 10.2 to 11.8 mm. The longest seed (19.6 mm) was recorded in the accession DORJc 32 collected from Adilabad. Six accessions collected from Adilabad, i.e. DORJc 10, DORJc 14, DORJc 18, DORJc 24, DORJc 26 and DORJc 32, were identified for high 100-seed weight (>80 g). The accessions with oil content higher than 30%, i.e. DORJc 53, DORJc 56, DORJc 57, DORJc 63, DORJc 71 and DORJc 73, can form the base population for the development of high oil lines. Fatty acid profiles of seed oil of Jatropha curcas accessions having varying oil content in their seed/kernel were examined. The accessions DORJc 54, DORJc 56, DORJc 57, DORJc 71, DORJc 73 and DORJc 74 have been identified as the ideal biodiesel types based on high cetane number (≥51).Not Availabl
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No full textNot AvailableFive statistical models, linear response and plateau (LRP), quadratic response and plateau (QRP), logistic, quadratic and square root were compared to describe castor seed yield response to phosphate fertilization under irrigated conditions of Junagadh and S K Nagar regions. Adjusted R2 values explained the variability in castor seed yield response to P fertilization, but the optimum phosphorus (Pop) values calculated by these models varied greatly. Overall the QRP followed by LRP model fitted the data with less bias than the other models, and calculated Pop values for Junagadh and S K Nagar (37.1 and 25.6 kg/ha respectively) were comparable with the P doses reported in literature.Not Availabl
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No full textNot AvailableWide variability in oil content was observed in 75 germplasm accessions of Pongamia pinnata (L.) Pierre collected from Telengana region of Andhra Pradesh, India. Out of these, fatty acid profiles of 21 accessions with varying seed oil content were examined. Large variation was observed in stearic, oleic and linoleic fatty acid composition i.e. 1.83-11.50%, 46.66-65.35% and 12.02-32.58% respectively while less variation i.e. 9.25-12.87% was found with palmitic acid content. Saponification number (SN), iodine value (IV) and cetane number (CN) of fatty acid methyl esters of oils varied from 183.3 to 200.91, 74.78 to 100.98 and 50.85 to 59.11 respectively. Fatty acid composition, IV and CN were used to predict the quality of fatty acid methyl esters of oil for use as biodiesel. Fatty acid methyl esters of oils of P. pinnata accessions DORPP 49, 72 and 83 were found most suitable (CN more than 56.6) for use as biodiesel and they meet the major specification of biodiesel standards of USA, Germany and European Standard Organization. The range of variability found for various biodiesel standards in accessions of P. pinnata can be utilized for the establishment of plantations of promising genotypes through clonal means for increased productivity.Not Availabl
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No full textNot AvailableBiodiesel is a clean burning fuel produced from grease, vegetable oils or animal fats. Biodiesel is produced
by transesterification of oils with short chain alcohols or by the esterification of fatty acids. The transesterification reaction consists of transforming triglycerides into fatty acid alkyl esters, in the presence of an alcohol, such as methanol or ethanol, and a catalyst, such as an alkali or acid, with glycerol as by-product. Because of diminishing petroleum reserves and the deleterious environmental consequences of exhaust gases from petroleum diesel,
biodiesel has attracted attention during the past few years as a renewable and environmentally friendly fuel. Since
biodiesel is made from vegetable oil or animal fats, it is renewable and biodegradable. However, the vegetable oil
and alcohol must be substantially anhydrous and have low free fatty acid content, because the presence of water or free fatty acid or both promotes soap formation. In this article the authors have discussed the scope of diversifying safflower for biodiesel apart from its use as edible oil and the characteristics of biodiesel obtained from safflower as feed stock.Not Availabl
