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文章摘要
高丽菜脉冲喷动床低频微波干燥品质与能耗研究
Study on the Quality and Energy Consumption of Pulse Spouted Bed-Low Frequency Microwave Drying of Cabbage
投稿时间:2018-07-17  修订日期:2018-09-29
DOI:
中文关键词: 脉冲喷动床  低频微波干燥  品质  均匀度  能耗  高丽菜
英文关键词: pulse spouted bed  low frequency microwave drying  quality, uniformity  energy consumption  cabbage
基金项目:江苏省苏北科技专项-富民强县项目;国家重点研发项目(2018YFD0400801)
作者单位E-mail
王玉川 江南大学 wyc453@163.com 
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中文摘要:
      为解决调理蔬菜热风干燥(AD)产品粘连、品质差、能耗高及高污染等问题,以高丽菜为实验原料,利用常压脉冲喷动床-低频微波干燥(PSBLMD)中试平台,进行调理高丽菜PSBLMD品质、均匀度及能耗研究,并与AD方式进行对比分析。结果表明,PSBLMD调理高丽菜(加糖比例15%)抗坏血酸含量、叶绿素含量及复水比(4.69 mg/100g、3.48 mg/100g、26.22)均高于AD高丽菜相应值(1.46 mg/100g、3.14 mg/100g、19.40),PSBLMD样品的水分、色差及收缩率均匀度(91.2%、93.7%、92.3%)达到90%以上;与AD方式相比,PSBLMD不但可以有效解决高糖调理高丽菜干燥过程产品粘结问题,提升干燥产品品质,而且缩短干燥周期50%以上及降低能耗40%以上。
英文摘要:
      Hot air drying (AD) of vegetables has many disadvantages including agglomeration, poor quality, high energy consumption and heavy pollutions. In this study, we used cabbage as the raw material, pulse spouted bed low frequency microwave drying (PSBLMD) as the drying method to build a pilot scale research platform. The quality, uniformity and energy consumption of the PSBLMD-dried cabbages were compared with those of the AD-dried ones. Results shown that the amount of ascorbic acid, chlorophyll and the rehydration ratio of PSBLMD-dried cabbages with 15% (w/w) sugar addition (4.69 mg/100g, 3.48 mg/100g and 26.22, respectively) was higher than those of the AD-dried cabbages (1.46 mg/100g, 3.14 mg/100g and 19.40, respectively). The uniformity of the products regarding the moisture content, the color appeal and the shrinkage ratio of PSBLMD-dried cabbages were >90%. Compared to AD, PSBLMD not only effectively solved the agglomeration problem during the drying process, but also improved the quality of the dried products. It shortened the drying time by >50% and reduced the energy consumption by >40%.
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