Journal of the Brazilian Chemical Society
versão impressa ISSN 0103-5053
SCHNEIDER, Rosana de Cassia S. et al. Chemo-enzymatic epoxidation of sunflower oil methyl esters. J. Braz. Chem. Soc. [online]. 2009, vol.20, n.8, pp. 1473-1477. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532009000800013.
The chemo-enzymatic epoxidation of the methyl esters of sunflower oil with lipase from Candida antarctica B and aqueous H2O2 in the presence and absence of an acyl donor was investigated. The biphasic system (CH2Cl2/H2O) comprised Candida antarctica B lipase (CALB, 1000 u g-1) and 30% (v/v) aqueous hydrogen peroxide. In some cases the conversion was higher than 99%. The best results were obtained for the biphasic system after 16 h of reaction, at 30 ºC, using 10 mmol of octanoic acid in relation to 1 g of the oil, 6 mL of dichlomethane and 5 mL of water.
Palavras-chave : Candida antarctica B lipase; chemo-enzymatic epoxidation; sunflower oil; methyl esters; bioprocessing.