内蒙古农业大学学报（自然科学版）2026，Vol.47Issue(1)：50-57,8.DOI:10.16853/j.cnki.1009-3575.2026.01.007
大葱葱叶不同干燥方法的对比研究
Comparative Study on Different Drying Methods for Scallion Leaf
摘要
Abstract
Drying methods including hot air drying(HAD),radio frequency drying(RFD)and radio frequency combined with hot air drying(RF-HAD)with similar heating power were used to dehydrate scallion leaves in this study.The effects of different drying methods on the drying characteristics and quality of scallion leaves were revealed by measuring and analyzing the drying period,the change of water content and water loss,heating uniformity,and color,rehydration ratio,ascorbic acid content and allicin content of scallion leaf after drying.The results showed that RF-HAD had the shortest drying period of 120 min,RFD drying period was 140 min,which was 33%and 22%shorter than HAD,respectively.RF-HAD had the fastest water loss,and its heating uniformity was better than RFD.Moreover,there was no improvement in the drying period and heating uniformity for RF-HAD when raising the container by 3 mm.The scallion leaf dried by HAD had the highest ascorbic acid and allicin contents of 31.40 mg/100 g and 102.29 mg/100 g,respectively,and also had the highest whiteness and greenness.Therefore,the scallion leaf from HAD had the best nutritional quality and appearance color.Compared to HAD and RFD,the scallion leaf from RF-HAD had the highest redness and slightly higher yellowness because more Maillard reaction happened.However,scallion leaves from RF-HAD had the largest rehy-dration ratio of 4.39,and the ascorbic acid and allicin contents were 12.46 mg/100 g and 53.01 mg/100 g,respectively,which were 40%and 52%of HAD dried scallion leaves.The ascorbic acid and allicin contents of RFD dried scallion leaves were 10.34 mg/100 g and 79.31 mg/100 g,respectively,which were 33%and 78%of HAD dried scallion leaves.In conclusion,HAD had the lowest effi-ciency but better quality.RFD and RF-HAD could improve drying efficiency while also achieving better quality,making them viable new methods for value-added utilization of scallion leaves.Considering energy consumption,RFD was the more efficient drying method.关键词
大葱葱叶/干燥特性/葱叶品质/射频-热风联合干燥Key words
Scallion leaf/Drying characteristics/Qualities/RF-HAD分类
轻工纺织引用本文复制引用
刘光泽,阮培英,程卫东,李学姣,耿端阳..大葱葱叶不同干燥方法的对比研究[J].内蒙古农业大学学报（自然科学版）,2026,47(1):50-57,8.基金项目
国家自然科学基金项目(32372008) （32372008）
