Hydrolysis of granular corn starch with controlled pore size
Hydrolysis of granular corn starch with controlled pore size
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孔径可控的颗粒玉米淀粉的水解
DOI：
10.1016/j.jcs.2012.01.011
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发表时间：
2012-09-01
影响因子：
3.8
通讯作者：
Zhang, Bin
中科院分区：
文献类型：
--
作者：
Chen, Guo;Zhang, Bin
使用葡糖淀粉酶在50 ℃下水解天然玉米（Zea mays L）淀粉颗粒1-8小时。通过释放到溶液中的葡萄糖浓度分析随时间的水解度。通过扫描电镜观察发现，随着水解度的增加，水解淀粉颗粒的孔径逐渐增大。结果表明，淀粉颗粒表面的每一个微孔都是由一个酶分子水解形成的，因此在相同的水解时间内，淀粉颗粒表面的微孔大小分布基本均匀。通过测定多孔淀粉颗粒的比表面积（S-BET）、孔隙率、吸附量和平均孔径，分析了消化时间对多孔淀粉颗粒性质的影响。(C)2012爱思唯尔有限公司保留所有权利。
Native corn (Zea mays L) starch granules were hydrolyzed using glucoamylase at 50 degrees C for 1-8 h. The degree of hydrolysis over time was analyzed by the concentration of glucose released into solution. The pore sizes of hydrolyzed starch granules increased gradually with the degree of hydrolysis, as evidenced by scanning electron micrographs. It was deduced that every pore on the surface of granules was formed by hydrolysis of one enzyme molecule, so the size of pores distributed on the surface of starch granules was almost homogeneous for the same hydrolysis time. The specific surface area (S-BET), porosity, adsorptive capacity and mean pore radius of porous starch granules were determined to analyze the effect of digestion time on granule properties. (C) 2012 Elsevier Ltd. All rights reserved.