黑皮冬瓜空气能热泵干燥工艺参数优化
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摘要
该研究优化黑皮冬瓜空气能热泵干燥工艺参数,先通过单因素试验研究瓜片厚度、烘干温度及风速等参数对冬瓜干燥过程及瓜干明度指数、复水比和维生素C保留率等瓜干品质指标的影响,确定各参数的最适取值范围,采用正交试验及综合加权评分法优化确定冬瓜热泵干燥工艺参数最佳值分别为:温度60℃,风速1.5 m/s,切片厚度6 mm。在该工艺条件下制得的瓜干明度指数值为86.2,复水比为6.82,维生素C保留率为84.37%,综合评分为92.91分。研究结果为空气能热泵干燥技术应用于冬瓜干的规模化生产提供参考。
In order to optimize air source heat pump drying process parameters of wax gourd,effects of slice thickness,drying temperature and air speed on drying process of wax gourd and the brightness,rehydration rate and retention rate of ascorbic acid(VC)of dried wax gourd were investigated by using single factor experiment,and the best range of values of the process parameters were confirmed. Then the heat pump drying process parameters of wax gourd were optimized and confirmed by using orthogonal experiment and comprehensive weighted scoring method,and the results showed that:drying temperature was 60 ℃,air speed was 1.5 m/s,slice thickness was 6 mm. Under the optimal conditions,the brightness,rehydration rate,retention rate of VC and comprehensive scoring of dried wax gourd were 86.2,6.82,84.37 %,92.91 respectively. The results provided references for the application of air source heat pump drying technology to the large-scale production of dried wax gourd.
In order to optimize air source heat pump drying process parameters of wax gourd,effects of slice thickness,drying temperature and air speed on drying process of wax gourd and the brightness,rehydration rate and retention rate of ascorbic acid(VC)of dried wax gourd were investigated by using single factor experiment,and the best range of values of the process parameters were confirmed. Then the heat pump drying process parameters of wax gourd were optimized and confirmed by using orthogonal experiment and comprehensive weighted scoring method,and the results showed that:drying temperature was 60 ℃,air speed was 1.5 m/s,slice thickness was 6 mm. Under the optimal conditions,the brightness,rehydration rate,retention rate of VC and comprehensive scoring of dried wax gourd were 86.2,6.82,84.37 %,92.91 respectively. The results provided references for the application of air source heat pump drying technology to the large-scale production of dried wax gourd.
引文
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[2]杨韦杰,唐道邦,徐玉娟,等.荔枝热泵干燥特性及干燥数学模型[J].食品科学,2013,34(11):104-108
[3]邓彩玲,林羡,徐玉娟,等.龙眼热泵干燥特性及数学模型的研究[J].食品工业科技,2013,34(12):115-121,125
[4]宋小勇.香蕉片热泵干燥过程动力学模型研究[J].干燥技术与设备,2012,10(5):9-20
[5]李敏,吴宝川,关志强,等.适宜添加剂预处理提高罗非鱼片冻融-热泵干燥品质[J].农业工程学报,2014,30(17):295-304
[6]国家卫生和计划生育委员会.食品安全国家标准食品中水分的测定:GB 5009.3-2016[S/OL].2016-08-31[2017-07-23].http://file4.foodmate.net/foodvip/web/viewer.html?file=../biaozhun/2018/GB5009.3-2016-kw.pdf
[7]于新,马永全.果蔬加工技术[M].北京:中国纺织出版社,2011:165-167
[8]母刚,张国琛.热泵干燥北极虾工艺研究[J].水产科学,2013,32(6):343-347
[9]李瑜,李娜,李晓利.冬瓜热风干燥工艺优化[J].食品与发酵工业,2015,41(5):138-143
[10]国家卫生和计划生育委员会.食品安全国家标准食品中抗坏血酸的测定:GB 5009.86-2016[S/OL].2016-08-31[2017-07-23].http://file4.foodmate.net/foodvip/web/viewer.html?file=../biaozhun/2018/GB5009.86-2016-kw.pdf
[11]盛金凤,李丽,孙健,等.香蕉片热泵干燥特性及数学模型研究[J].食品研究与开发,2016,37(20):89-94