Síntese enzimática de butirato de isoamila empregando lipases microbianas comerciais
Aragão, Vitor Cardoso; Anschau, Andréia; Porciuncula, Barbara Daniele Almeida; Thiesen, Cleidi; Kalil, Susana Juliano; Burkert, Carlos André Veiga; Burkert, Janaina Fernandes de Medeiros
Abstract:
Isoamyl butyrate production was investigated using free and immobilized lipases by esterification of butyric acid with isoamyl alcohol in a solvent-free system and in an organic media. Among the enzymes studied, Lipozyme TL IM was found to be the most active catalyst in n-hexane as a solvent. The effects of different solvents and the amount of water added on conversion rates were studied. A maximum conversion yield of 80% in n-hexano at 48 h was obtained under the following conditions: 3 g L-1 of Lipozyme TL IM, 30 ºC, 180 rpm of agitation, isoamyl alcohol to butyric acid molar ratio of 1:1 and acid substrate concentration of 0.06 M.