食品科学2018，Vol.39Issue(6)：258-263,6.DOI:10.7506/spkx1002-6630-201806040
热泵式长豇豆干燥工艺优化
Optimization of Heat Pump Drying Process for Long Cowpea
摘要
Abstract
This study aimed to improve the quality parameters of heat pump dried long cowpea such as rehydration characteristics and color,and simultaneously to lower energy consumption during heat pump drying and increase drying efficiency.The rehydration ratio,color difference,per-unit energy consumption and drying time were investigated with respect to three independent variables,namely drying temperature,blanching time and material density.A multiple regression model was developed for each of these response variables in order to optimize the selected independent variables.A blanching time of 3 min,a material density of 2 kg/m2 and a drying temperature of 50 ℃ were determined as the optimal conditions.Under these conditions,the experimental values of rehydration ratio,color difference,per-unit energy consumption and drying time were 1.15,22.39,14.31 (kW·h)/kg and 7 h,respectively,which were very close to the predicted ones.These optimized process conditions can provide a useful basis for heat pump drying of cowpea.关键词
热泵/干燥工艺/豇豆/Box-Behnken试验/优化Key words
heat pump/drying/cowpea/Box-Behnken design/optimization分类
农业科技引用本文复制引用
张波,姬长英,蒋思杰,徐伟悦,田光兆,顾宝兴..热泵式长豇豆干燥工艺优化[J].食品科学,2018,39(6):258-263,6.基金项目
江苏省科技计划项目(SBE2015310266) （SBE2015310266）
江苏省自然科学基金项目(BK20140729) （BK20140729）
