Síntese enzimática de butirato de isoamila empregando lipases microbianas comerciais

AUTOR(ES)

Aragão, Vitor Cardoso, Anschau, Andréia, Porciuncula, Barbara Daniele Almeida, Thiesen, Cleidi, Kalil, Susana Juliano, Burkert, Carlos André Veiga, Burkert, Janaína Fernandes de Medeiros

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2009

RESUMO

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.

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