Study on Retrogradation of Ultra-High Pressure Modified Starch

摘要：

Corn starch-water suspension(5％, w/v) was subjected to ultra-high pressure(UHP) treatment at 500MPa、550MPa、600MPa、650MPa for 5min, and then the samples were dried for 0d、3d、5d、10days respectively. X-ray diffraction was used to determining crystallinity. X-ray diffraction patterns show that the crystallinity of UHP-treated starches after annealing at low temperature increases to a certain extent. After 3days storage, a maximum retrogradation extent appeared in the UHP-treated starches at 500MPa while no changes were observed in crystalline type. Similar results also happened to the UHP-treated starches at 550MPa, but the result of retrogradation for a longer time could cause the variation in crystalline type. The UHP-starches at 600 and 650MPa were stored for a period of time,crystallinity increased and crystal type changed from A to B.

关键词： ultra high pressure corn starch retrogradation

作者: LIU Yanqi GUO Yuwei

作者单位: School of Food and Biological Engineering,Zhengzhou Institute of Light Industry,Zhengzhou,Henan 450002,China

会议类型: 国际会议

会议名称: 2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)

会议地点: 河北保定

会议语种:英文

页码: 666-669

在线出版日期: 2007-10-20（万方平台首次上网日期，不代表论文的发表时间）