期刊
FOOD RESEARCH INTERNATIONAL
卷 102, 期 -, 页码 291-302出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.foodres.2017.09.064
关键词
Soluble dietary fiber; Wheat bran; Aggregation behavior; Rheological properties
资金
- National Key Research and Development Program of China [2017YFD0400106]
- Special Fund for Agroscientific Research in the Public Interest [201303071]
- National Natural Science Foundation of China [31501531]
- Tianjin Science and Technology Commission [15JCQNJC14900]
- Tianjin Education Commission [20140610]
- Ph.D. Training Foundation of the Tianjin University of Science and Technology [2016002]
The present study assesses the aggregation behavior of wheat bran arabinoxylan-rich soluble dietary fiber (SDF) fractions with diverse molecular weight and substitution in order to provide useful information to prevent the formation of a block network. In the present work, dynamic and static light scattering, diffusing wave spectroscopy, small amplitude dynamic rheology, atomic force microscopy, and the water-holding and swelling capacities were evaluated to assess the SDF aggregation behavior induced by intrinsic and extrinsic factors. Furthermore, the rheological behavior was explained by the physically cross-linked or interpenetrating hydro colloid network established during SDF self-aggregation, dependent on its molecular structure. The results indicated that the SDF fractions exhibiting a high molecular weight and a lower substitution degree and di-substituted ratio led to more significant aggregation due to the formation of disordered tangles coupled with a more solid-like behavior. The obtained information will prove useful for the development of more stable and compatible SDF fractions.
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