Gao Ya-juan
2008
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Journal
Science and Technology of Food Industry
Abstract
The esterification conditions between acetic acid and menthyl alcohol,which was catalyzed by lipase(candida rugosa lipase,CRL) in organic solvents,was investigated.The effects of the lipase amount,solvent,molar ratio of menthyl alcohol to acetic acid,substrate concentration and the temperature on the esterification were discussed.The results indicated that the esterification conversion reaches to 92.4%,when the reaction was carried out 48h in n-hexane,lipase amount was 1.2%(lipase mass fraction in the menthyl alcohol and acetic acid system),the molar ratio of menthyl alcohol to acetic acid was 1∶1,the concentration both of the substrate was 0.1mol/L,and the temperature was 40℃.The product of menthyl acetate's color was good and the odor was pure.