Structural, Pasting, and Thermal Properties of Ultra-high Pressure-treated Lotus Seed Starch

GUO Ze-Bin CHEN Bing-Yan LU Xu ZENG Shao-Xiao ZHENG Bao-Dong

Citation:  GUO Ze-Bin, CHEN Bing-Yan, LU Xu, ZENG Shao-Xiao, ZHENG Bao-Dong. Structural, Pasting, and Thermal Properties of Ultra-high Pressure-treated Lotus Seed Starch[J]. Chinese Journal of Structural Chemistry, 2014, 33(4): 647-648. shu

Structural, Pasting, and Thermal Properties of Ultra-high Pressure-treated Lotus Seed Starch

    通讯作者: ZHENG Bao-Dong,
  • 基金项目:

    Technology Major Projects of Fujian Province (2012N5004) (2012N5004)

    the Natural Science Foundation of Fujian Province (2012J01081) (2012J01081)

    Technological Innovation Team Support Plan of Institution of Higher Learning in Fujian Province ([2012]03) ([2012]03)

    Forestry University (cxtd12009) (cxtd12009)

摘要: Lotus seed starch (15%, w/w) was subjected to ultra-high pressure (UHP) at 500 MPa for 10~60 min. The effects of UHP on the structural, pasting, and thermal properties of starch were investigated using solid-state 13C CP/MAS NMR, differential scanning calorimetry (DSC), HPSEC-MALLS-RI, and a rapid visco analyzer. The 13C CP/MAS NMR results revealed a reduction in the relative crystallinity and peak intensity of the crystalline state with increasing the UHP time. The molecular weight of native starch was 1.433×107 Da, which was higher than that of the UHP-treated starch. Viscograms of UHP-treated starch revealed an increase in paste viscosity, peak time, and pasting temperature and a reduction in breakdown and setback viscosity compared to the native starch. Furthermore, the DSC results showed a reduction in gelatinization temperature and gelatinization enthalpy with increasing the UHP time.

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  • 收稿日期:  2014-01-28
  • 网络出版日期:  2014-03-08
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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