Drying Kinetics and Quality Attributes of Peach Cylinders as A. fected by Osmotic Pretreatments and Infrared Radiation Drying
文献类型: 外文期刊
第一作者: Zhang, Pengfei
作者: Zhang, Pengfei;Zhou, Linyan;Bi, Jinfeng;Liu, Xuan;Lyu, Jian;Chen, Qinqin;Wu, Xinye
作者机构:
关键词: osmotic dehydration;ultrasound;peach cylinders;low field nuclear magnetic resonance (LF-NMR);infrared radiation drying
期刊名称:INTERNATIONAL JOURNAL OF FOOD ENGINEERING ( 影响因子:1.713; 五年影响因子:1.637 )
ISSN: 2194-5764
年卷期: 2017 年 13 卷 5 期
页码:
收录情况: SCI
摘要: The effect of osmotic dehydration (OD) and ultrasound-assisted osmotic dehydration (ULOD) on drying kinetics and quality of peach cylinders by infrared radiation drying were investigated. The moisture state and redistribution after osmotic pretreatments and subsequent drying process were also studied by low field nuclear magnetic resonance. The water loss and solute gain increased with osmotic time, and ULOD could promote water transfer. The signal amplitude of free water and immobile water diminished and shifted to the left for samples pretreated by both ULOD and OD. The brightness in T2-weighted images appeared a declining trend with increasing osmotic time of ULOD and OD, indicating the moisture content reduced gradually. During dying process, the free water of all samples was removed completely after drying for 120 min. ULOD and OD could increase water activity and decrease shrinkage of samples. Long pretreatment of ULOD and OD improved the color of dried peach cylinders.
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