High electric field drying of Japanese radish

被引:78
作者
Bajgai, TR [1 ]
Hashinaga, F [1 ]
机构
[1] Kagoshima Univ, Fac Agr, Kagoshima 8900065, Japan
关键词
color; high electric field; Japanese radish; non-thermal drying; rehydration ratio; shrinkage; water absorption;
D O I
10.1081/DRT-100107499
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Japanese radish (Raphanus sativus L.) slices were dried under an alternating current (AC) high electric field (HEF) of 430kV/rn using a multiple point electrode and a grounded copper mesh. HEF with multipoint to a mesh electrode system could evaporate 87.5% of the total moisture from fresh radish slices on 7h exposure. Oven-drying at 60 degreesC and ambient air at 25 degreesC for 7 h could dry 86.9% and 26.5% of the total moisture from the fresh radish slices respectively. The average rate of HEF drying from second hour to sixth hour was 0.025 g/min which was 0.00 12 g/min higher than the oven-drying. Quality factors for HEF-dried radish exhibited less shrinkage, high absorption of water, better rehydration, less solids loss and better color than the oven-drying.
引用
收藏
页码:2291 / 2302
页数:12
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