光谱学与光谱分析 |
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Study on Mechanism of Inactivated Cider Yeast Adsorbing Patulin by Fourier Transform Infrared Spectroscopy |
GUO Cai-xia, YUE Tian-li*, YUAN Ya-hong, WANG Zhou-li, WANG Ling, CAI Rui |
College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China |
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Abstract The mechanism of patulin adsorption by inactivated cider yeast was studied by chemical modification and FTIR. The results of patulin removal by various modified yeast biomass showed that the ability of patulin biosorption by acetone-treated yeast and NaOH-treated yeast increased siginificantly, while the methylation of amino group and esterification of carboxylate functionalities of yeast cell surface caused a decrease in patulin binding, which indicated that amino group and carboxyl group presented in the cell walls of yeast might be involved in the binding of patulin to the yeast. The FTIR analysis indicated that the main functional groups were amino group, carboxyl group and hydroxy group which are associated with protein and polysaccharides.
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Received: 2012-07-23
Accepted: 2012-11-30
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Corresponding Authors:
YUE Tian-li
E-mail: yuetl@nwsuaf.edu.cn
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