期刊
CARBOHYDRATE POLYMERS
卷 102, 期 -, 页码 606-614出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.12.010
关键词
High-amylose maize; Heterogeneous starch granules; Morphology; Structure; Gelatinization property
资金
- National Natural Science Foundation of China [31071342, 31270221]
- Talent Project of Yangzhou University
- Innovation Program for Graduates of Jiangsu Province [CXZZ13_0895]
- Priority Academic Program Development from Jiangsu Government, China
High-amylose cereal endosperm is rich in heterogeneous starch granules. In this paper, we investigated the morphology, structure and gelatinization properties of high-amylose maize endosperm starch. Starch had individual, aggregate and elongated heterogeneous granules. Most of individual granules were round with small size and had one central hilum. Aggregate and elongated granules consisted of many subgranules with central hila, and had irregular and rod/filamentous shapes, respectively. Iodine stained starch granules showed five types of polarization colors: blue, purple, fuchsia, dark red, and interior dark blue and exterior brown. Most of individual and aggregate granules had the color of dark red, that of elongated granules the color of interior dark blue and exterior brown. Amylose was mainly distributed in the hilum region and the circumference of starch granules. Aggregate and elongated granules had higher amylose content than individual granules. Elongated and individual granules had the highest and the lowest gelatinization resistance among high-amylose maize heterogeneous starch granules, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
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