期刊
CARBOHYDRATE POLYMERS
卷 272, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118481
关键词
Sweet potato starch; Cold plasma; Pullulanase; Multiscale structure; Physicochemical property
资金
- National Key R&D Program Subproject of China [2017YFD0401203-01]
This study explored the potential application of physical combined enzyme treatment to modify starch granules. The CP-PUL combined treatment significantly promoted the subsequent structural modification of starch, increased the short-chain ratio and amylose content, reduced the molecular weight and relative crystallinity, and disturbed the short-range order.
This study explored the potential application of physical combined enzyme treatment to modify starch granules. Starch was modified by exposure to cold plasma (CP) for 1, 3, and 9 min and to pullulanase (PUL) for 12, 24, and 36 h. Individual treatments with CP and PUL somewhat modified starch structure and physicochemical prop-erties. Nevertheless, compared with native starch and individual treatments, CP-PUL combined treatment significantly (p < 0.05) promoted the subsequent structural modification, increased the short-chain ratio and the amylose content, reduce the molecular weight and the relative crystallinity, and disturb the short-range order. CP also improved the properties of PUL-modified starch, including enhanced solubility, thermal properties and resistance to enzymatic hydrolysis but worsened swelling power and peak viscosity properties. This research provides a new perspective for the rational application of CP-PUL co-treated starch in the food industry.
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