食品科学2024，Vol.45Issue(6)：183-191,9.DOI:10.7506/spkx1002-6630-20230424-235
超声处理时间对莲藕淀粉理化和结构特性的影响
Effect of Ultrasound Treatment Time on Physicochemical and Structural Properties of Lotus Root Starch
摘要
Abstract
This study investigated the effects of different durations of ultrasound treatment(0,10,20,30,40 and 50 min)on the gelatinization,rheological properties,crystal structure,short-range ordered structure,and microstructure of lotus root starch(LS).The results showed that the molecular chain swelled and entanglement increased after ultrasonic treatment,and the gelatinization viscosity increased up to(6 059±31)mPa·s.Cracks,and collapses and holes appeared on the surface of starch particles,which promoted the entrance of water molecules and increase the viscoelasticity.Ultrasound treatment destroyed the α-1,6-glycosidic bonds of starch molecules,and broke some branches to form short starch chains,which were rearranged into ordered structures.The number of short-range ordered structures increased,and the R1 047/1 022 ratio increased by 3.20%.Short-time ultrasonic treatment(30 min)enhanced the interaction between starch molecules,making the double helix structure more ordered and compact and increasing the Tp and ΔH by 11.09%and 89.21%,respectively.Long-time ultrasonic treatment(40-50 min)was not conducive to the formation of ordered structures.The results of this study can provide a theoretical basis for the application of ultrasonic in regulating the physicochemical properties and multi-scale structure of starch.关键词
莲藕淀粉/超声处理/黏弹性/糊化特性/短程有序结构Key words
lotus root starch/ultrasound treatment/viscoelasticity/pasting properties/short-range ordered structure分类
轻工纺织引用本文复制引用
廖雪勤,汪楠,胡荣,薛冰洁,张甫生,郑炯..超声处理时间对莲藕淀粉理化和结构特性的影响[J].食品科学,2024,45(6):183-191,9.基金项目
重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0392) （cstc2020jcyj-msxmX0392）
中央高校基本科研业务费重点项目(XDJK2020B045) （XDJK2020B045）
西南大学大学生创新创业训练计划项目(X202210635590) （X202210635590）
