Production of biodiesel in solvent-free medium catalyzed by crude lipase powder from Adansonia grandidieri and Jatropha mahafalensis seeds: Effects of alcohol polarity, glycerol and thermodynamic water activity
Production of biodiesel in solvent-free medium catalyzed by crude lipase powder from Adansonia grandidieri and Jatropha mahafalensis seeds: Effects of alcohol polarity, glycerol and thermodynamic water activity
The aim of this work was to evaluate the potential of crude lipase powders made from Adansonia grandidieri and Jatropha mahafalensis seeds for the synthesis of fatty acid alkyl esters in a solvent-free system. The influence of the nature of the alcohol, the amount of glycerol, and hydration of the powder was investigated. Results showed that the activity of these crude lipase powders was inversely proportional to the alcohol polarity and the amount of the glycerol in the reaction medium. To ensure optimum activity, A. grandidieri and J. mahafalensis powders must be conditioned to a water activity of 0.33 and 0.66. To obtain a fatty acid ethyl ester yield greater than 95% with A. grandidieri, ethanol should be introduced at an amount corresponding to a triacylglycerol to ethanol molar ratio of 2:1 every 15 h for 96 h and use 25% of preconditioned crude lipase powders (2 additions of 12.5%). (Résumé d'auteur)
K50 - Technologie des produits forestiers, Graine, Glycérol, P06 - Sources d'énergie renouvelable, 000 - Autres thèmes, Poudre, Jatropha, Biocarburant, Catalyse, Éthanol, Acide gras, Adansonia, Biocatalyseur, Énergie renouvelable, agrovoc: agrovoc:c_10677, agrovoc: agrovoc:c_27460, agrovoc: agrovoc:c_2419, agrovoc: agrovoc:c_35519, agrovoc: agrovoc:c_2818, agrovoc: agrovoc:c_27465, agrovoc: agrovoc:c_16253, agrovoc: agrovoc:c_3298, agrovoc: agrovoc:c_25719, agrovoc: agrovoc:c_6946, agrovoc: agrovoc:c_28280
K50 - Technologie des produits forestiers, Graine, Glycérol, P06 - Sources d'énergie renouvelable, 000 - Autres thèmes, Poudre, Jatropha, Biocarburant, Catalyse, Éthanol, Acide gras, Adansonia, Biocatalyseur, Énergie renouvelable, agrovoc: agrovoc:c_10677, agrovoc: agrovoc:c_27460, agrovoc: agrovoc:c_2419, agrovoc: agrovoc:c_35519, agrovoc: agrovoc:c_2818, agrovoc: agrovoc:c_27465, agrovoc: agrovoc:c_16253, agrovoc: agrovoc:c_3298, agrovoc: agrovoc:c_25719, agrovoc: agrovoc:c_6946, agrovoc: agrovoc:c_28280
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).0 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average
Citations provided by BIP!Popularity provided by BIP!