摘要
Yellow maize as raw materials,hot air drying was used to reduce moisture content,and the tempering was implemented after drying.This study aimed to investigate the effects of hot air drying temperature and tempering time on the properties of maize starch.The wet milling was used to extract maize starch.Starch yield,protein content,amylose and amylopectin content,transparency and coagulation,solubility index and swelling power,color,pasting properties,and gelatinization properties were researched.The results showed that when the hot air temperature increased,the properties such as starch yield,amylopectin content,transparency,solubility,swelling power,whiteness decreased,and properties such as protein content and amylose content,coagulation,gelatinization temperature increased.Compared to drying temperature,tempering time has a less remarkable effect on the maize starch properties.The maize starch with better whiteness,solubility,swelling power could be obtained by adjusting tempering time.
基金
This work was financially supported by the National Natural Science Foundation of China(Grant No.31271972,No.31671907,No.52006109)
and the University Science and Technology Innovation Team Support Plan of Henan Province of China in 2016(16IRTSTHN009).
作者简介
Guangyue Ren,PhD,Professor,research interest:agricultural product drying technology,Email:guangyueyao@163.com;Ledao Zhang,PhD,lecturer,research interest:agricultural product drying technology,Email:nmzld2005@126.com;Fanlian Zeng,Graduate student,research interest:agricultural product drying technology;Yebei Li,Graduate student,research interest:agricultural product drying technology;Linlin Li,PhD,Lecturer,research interest:microwave-freeze drying mechanism and energy saving and quality loss reduction technology for agricultural products,rapid detection of agricultural products quality,E-mail:linlinli2020@126.com;Corresponding author:Xu Duan,PhD,Professor,research interest:agricultural product drying technology.College of Food and Bioengineering,Henan University of Science&Technology,No.263,Kaiyuan Road,Luoyang,Henan 471023,China.Tel:+86-379-64282342,Email:duanxu_dx@163.com.
