Enzymatic esterification of starch using recovered coconut oil

被引：59

作者：

Rajan, Akhila ^{[1
]}

Prasad, V. S. ^{[1
]}

Abraham, T. Emilia ^{[1
]}

机构：

[1] CSIR, Reg Res Lab, Div Chem Sci, Polymer Sect, Trivandrum 695019, Kerala, India

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2006年 / 39卷 / 4-5期

关键词：

degree of substitution; recovered coconut oil; lipase;

D O I：

10.1016/j.ijbiomac.2006.04.006

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Modification of maize and cassava starches was done using recovered coconut oil and microbial lipase. Microwave esterification was advantageous as it gave a DS 1.55 and 1.1 for maize starch and cassava starch, respectively. Solution state esterification of cassava starch for 36 h at 60 degrees C gave a DS of 0.08 and semi-solid state esterification gave a DS of 0.43. TGA and DSC studies showed that the higher DS attributed to the thermostability, since onset of decomposition is at a higher temperature (492 degrees C) than the unmodified (330 degrees C) and was stable above 600 degrees C. alpha-Amylase digestibility and viscosity reduced for modified starch. (c) 2006 Published by Elsevier B.V.

引用

页码：265 / 272

页数：8

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