| 光谱学与光谱分析 |
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| Effect of Dynamic High-Pressure Micro-Fluidization on the Structure of Maize Amylose |
| TU Zong-cai1, 2, YIN Yue-bin1, ZHANG Qiu1, WANG Hui1 |
1. State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
2. College of Life Science, Jiangxi Normal University, Nanchang 330022, China |
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Abstract The effect of dynamic high-pressure micro-fluidization (DHPM) at 80, 120, 160, and 200 MPa on the structure of maize amylose was investigated using scanning electron microscopy (SEM), atomic force microscope (AFM), Xray diffraction, and FT-IR spectroscopy. SEM analysis showed that the surface appearances of maize amylose were altered and the starch granules were partially congregated together after DHPM treatment. AFM images showed that the treated starch molecules are cross-linked to each other and arranged in a close mesh structure. Xray diffraction spectra and IR spectra indicated that relative crystallinity declined gradually with the pressure increasing. The results provide a theoretical basis for starch modification of DHPM.
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Received: 2012-10-17
Accepted: 2013-01-12
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Corresponding Authors:
TU Zong-cai
E-mail: tuzc_mail@yahoo.com.cn
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