TY - JOUR AB - A preliminary evaluation of the feasibility of producing biodiesel using oil extracted from defective coffee beans was conducted as an alternative means of utilizing these beans instead of roasting for consumption of beverage with depreciated quality. Direct transesterifications of triglycerides from refined soybean oil (reference) and from oils extracted from healthy and defective coffee beans were performed. Type of alcohol employed and time were the reaction parameters studied. Sodium methoxide was used as alkaline catalyst. There was optimal phase separation after reactions using both soybean and healthy coffee beans oils when methanol was used. This was not observed when using the oil from defective beans which required further processing to obtain purified alkyl esters. Nevertheless, coffee oil was demonstrated to be a potential feedstock for biodiesel production, both from healthy and defective beans, since the corresponding oils were successfully converted to fatty acid methyl and ethyl esters. (c) 2007 Elsevier Ltd. All rights reserved. AD - Univ Fed Minas Gerais, DEQ, Nucleo Pesquisa & Desenvolvimento Cafe, BR-30160030 Belo Horizonte, MG, Brazil AN - WOS:000254072200071 AU - Oliveira, L. S. AU - Franca, A. S. AU - Camargos, R. R. S. AU - Ferraz, V. P. DA - May DO - 10.1016/j.biortech.2007.05.074 IS - 8 J2 - Bioresource Technol KW - biodiesel LA - English N1 - 275lf PY - 2008 SN - 0960-8524 SP - 3244-3250 ST - Coffee oil as a potential feedstock for biodiesel production T2 - Bioresource Technology TI - Coffee oil as a potential feedstock for biodiesel production UR - ://WOS:000254072200071 VL - 99 ID - 4334 ER -