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

GUO Ze-Bin ^a,b,c ,
CHEN Bing-Yan ^a,b,c ,
LU Xu ^a,b ,
ZENG Shao-Xiao ^a,b,c ,
ZHENG Bao-Dong ^a,b,c,,

a.
a. College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
b.
b. Institute of Food Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
c.
c. Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fuzhou 350002, China

Corresponding author: ZHENG Bao-Dong,
Received Date: 28 January 2014
Available Online: 8 March 2014
Fund Project: the Scientific and Technological Innovation Team Support Plan of Institution of Higher Learning in Fujian Province ([2012]03) (2012N5004) the Scientific and Technological Innovation Team Support Plan of Fujian Agriculture and Forestry University (cxtd12009) (2012J01081)

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.
- lotus seed starch,
- ultra-high pressure,
- molecular weights,
- pasting properties,
- thermal properties
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