Aspects Regarding the Gross Chemical Composition and Fatty Acids Content of Some By-Products Obtained from the Biofuel Industry
Keywords:
biofuels, by- products, toxic potentialAbstract
Samples of by-products, obtained from the production of biofuels were collected. These products were introduced in different proportions in feed rations of fattening lambs. Gross chemical composition of feed was analyzed and compared with mean reference values. Ash and cellulose content does not influence the results. The percentage of raw protein, specific for each feed, is correlated with the body weight gain. Fat quantity of rape meal is the closest to that of granulated feed and also the highest compared with the other groups, so that it can justify the higher productive performance achieved by group 1, who received rape meal in ratio. The concentration of fatty acids was determined from analyzed feed after oils extraction, their saponification and their reading with a HPLC. The data showed that the fatty acid level is relatively close to that specified in the literature. Euricic acid, that is responsible for the toxic potential of the rape, has been found in rape meal.
References
Banu, C., Bioetanolul – combustibilul viitorului, Ed Agis, Seria Energo-Mediu, 2005;
Bell, J. M., Nutrients And Toxicants in Rapeseed Meal: A Review, Journal of Animal Science, 1984, 58, No. 4;
Bostyn, S., Duval-Onen, F., Porte, Catherine, Coïc, J.P., Fauduet H., Kinetic modelling of the degradation of the a-tocopherol in biodiesel-rape methyl ester Bioresource Technology, November, 2007;
Maiorella, B. L., Ethanol. In: Comprehensive Biotechnology, Editor Moo-Young M. V.3, Pergamon Press, 1985;
Marcu N., Raport de cercetare pentru Grantul CNCSIS “Studiul eficienţei cultivării şi utilizării în furajare a unor soiuri de rapiţă libere de glucozizi şi acid euricic” - frf.cncsis.ro/documente
Romero, E., Bautista, J., García-Martinez, A.M., Cremades, O., Parrado, J. -Bioconversion of corn distiller’s dried grains with solubles (CDDGS) to extracellular proteases and peptones, Process Biochemistry, 2007, 42, 1492–1497;
Senn, T. , Pieper, H. I. – Classical Methods In The Biotechnology of Ethanol, Classical And Future Aplications, Ed. Roehr M., Wiley – VCH, 2001;
***http: //www.biodieselmagazin.ro/revista/analize;
*** http: //www.wikipedia.org.
