臭氧处理淀粉纳米晶在水相中的分散性  

Ozone treatment of starch nanocrystals in the aqueous phase for dispersion studies

作　　者：杨冰琎 于俊波[2] 陈磊 YANG Bingjin;YU Junbo;CHEN Lei(School of Food Science And Engineering,Wuhan Polytechnic University,Wuhan 430023,China;Chinese Cereais and Oils Association,Beijing 100083,China)

机构地区：[1]武汉轻工大学食品科学与工程学院,武汉430023 [2]中国粮油学会,北京100083

出　　处：《武汉轻工大学学报》2024年第3期25-30,共6页Journal of Wuhan Polytechnic University

基　　金：湖北省自然科学基金项目(编号:2023AFB304),中央引导地方科技发展专项项目(食品绿色加工技术与智能装备创新平台建设)(编号:2022BGE247).

摘　　要：本研究旨在探讨臭氧处理的淀粉纳米晶体(OSNC)在水相中的分散特性。将糯米淀粉经3.16 mol/L硫酸水解后产生的淀粉纳米晶(SNC)用臭氧气体流量为1 L/min处理1 h,经马尔文粒度仪、透射电子显微镜(TEM)对SNC和OSNC的粒径分布、电位状态和微观形态进行观察。通过马尔文粒度仪对不同pH的OSNC(0.01%)悬浮液的粒径和电位进行分析,观察不同pH条件下OSNC(0.01%)悬浮液2 h和72 h后的团聚行为。结果表明:臭氧处理后,OSNC的分布更分散,聚集程度降低,但颗粒形态没有发生变化,OSNC(0.01%)悬浮液在pH>10.92时,更易均匀分散在水相中。The aim of this study was to investigate the dispersion properties of ozonated starch nanocrystals(OSNC)in water.Starch nanocrystals(SNC)produced from the hydrolysis of glutinous rice starch by 3.16 mol/L sulfuric acid were treated with an ozone gas flow rate of 1 L/min for 1 h.The particle size distribution,potential state and micro-morphology of SNC and OSNC were investigated by Malvern particle sizer,transmission electron microscope(TEM),and the suspension of OSNC(0.01%)at different pH was investigated by Malvern particle sizer.The particle size and potential were investigated and the agglomeration behaviour of OSNC(0.01%)suspensions at different pH conditions after 2 h and 72 h was observed.The results showed that the distribution of OSNC was more dispersed and the degree of aggregation was reduced after ozone treatment,but the particle morphology did not change,and the OSNC(0.01%)suspension was more easily dispersed uniformly in the aqueous phase at pH>10.92.

关 键 词：糯米淀粉 臭氧处理 淀粉纳米晶 PH 分散性 

分 类 号：TS213[轻工技术与工程—粮食、油脂及植物蛋白工程]