Kinetics and mechanism of esterification of isoamyl alcohol with acetic acid by immobilized lipase

被引:0
|
作者
Gogoi, Sumbita [1 ]
Dutta, N. N. [1 ]
机构
[1] CSIR, NE Inst Sci & Technol, Div Chem Engn, Jorhat 785006, Assam, India
关键词
Immobilized; Isoamyl acetate; Lipase; Esterification; ENZYMATIC-SYNTHESIS; VINYL-ACETATE; ORGANIC MEDIA; CATALYZED TRANSESTERIFICATION; NONAQUEOUS MEDIA; WATER ACTIVITY; HYDROLYSIS; SOLVENT; ESTERS; 2-O-BENZYLGLYCEROL;
D O I
暂无
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this study, the effects of the rate enhancement of isoamyl acetate formation by immobilized Mucor miehei lipase catalysed esterification of isoamyl alcohol with acetic acid were investigated. The esterification reaction was studied in ten different solvents and n-heptane was found to be most suitable. The rate of the reaction was affected by the addition of molecular sieves (3 angstrom) and temperature. The effects of different reaction parameters such as lipase and Substrate concentrations were studied. The activity of immobilized lipase was found to be maximum at lipase concentration of 12 mg/mL and at a reaction temperature of 55 degrees C; retained about one third of its initial activity up to seven reaction cycles after repeated use. The kinetics of the reaction call be described by Ping-Pong Bi-Bi mechanism with acid inhibition. The parameter values were estimated by non-linear regression analysis.
引用
收藏
页码:209 / 215
页数:7
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