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Synthesis of monoterpene esters by alcoholysis reaction with Mucor miehei lipase in a solvent‐free system
Author(s) -
Chatterjee T.,
Bhattacharyya D. K.
Publication year - 1998
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-998-0079-7
Subject(s) - chemistry , alcohol , organic chemistry , lipase , solvent , transesterification , ethyl acetate , rhizomucor miehei , terpene , butyl acetate , catalysis , molar ratio , triacylglycerol lipase , chromatography , enzyme
The syntheses of geranyl acetate and citronellyl acetate by alcoholysis reaction catalyzed by immobilized lipase from Mucor miehei was studied for the first time in a solvent‐free system. Reactions were carried out at a terpene alcohol/acyl donor molar ratio of 1:5 with Lipozyme at 10% of the total weight of the reactants in a solvent‐free system. Incubations were carried out at 55 to 60°C for ethyl and butyl acetates as acyl donors, whereas for methyl acetate the incubation temperature was 40 to 45°C. Excess concentration of acyl donor increases the percentage of geranyl acetate and citronellyl acetate, while excess of terpene alcohol concentration decreases the same. Yields from 75 to 77% molar conversion (90 to 98% conversion, w/w) were obtained after 8 to 28 h of reaction time.