黄秋葵热风与远红外干燥特性、动力学及品质的比较  

Comparison on Characteristics,Kinetics and Quality of Abelmoschus moschatus L.Medic.in Hot Air Drying and Far-infrared Drying

作　　者：麦馨允 牛俊乐[1] 胡秦佳宝 黄斌 刘彩华 周奕豪[1] 鞠明哲 MAI Xinyun;NIU Junle;HU Qinjiabao;HUANG Bin;LIU Caihua;ZHOU Yihao;JU Mingzhe(College of Agriculture and Food Engineering,Baise University,Baise 533000,Guangxi,China;Industrial College of Subtropical Characteristic Agriculture,Baise University,Baise 533000,Guangxi,China;Guangxi Key Laboratory of Biology for Mango,Baise University,Baise 533000,Guangxi,China)

机构地区：[1]百色学院农业与食品工程学院,广西百色533000 [2]百色学院亚热带特色农业产业学院,广西百色533000 [3]百色学院广西芒果生物学重点实验室,广西百色533000

出　　处：《食品研究与开发》2023年第22期80-86,179,共8页Food Research and Development

基　　金：广西一流学科建设资助项目(农业资源与环境,桂教科研[2022]1号);广西高校中青年教师科研基础能力提升项目(2023KY0765、2021KY0742);百色市科学研究与技术开发计划课题(百科20222939、百科20222009);百色学院校级科研项目(2018KN20、2018KN01)。

摘　　要：为获得黄秋葵干燥工艺条件,选取不同干燥方式、干燥温度对黄秋葵进行干燥,研究不同干燥工艺条件对干燥特性、动力学和品质的影响。结果表明:热风干燥速率受干基含水率的影响大,远红外干燥速率受干基含水率的影响小。Midilli模型能准确描述黄秋葵热风和远红外干燥过程。在相同温度下,热风干燥的有效水分扩散系数比远红外干燥的大0.52~1.10倍,热风干燥所需活化能比远红外干燥所需活化能低5481.76 J/mol。干制品的VC降解、复水比和硬度受温度和时间累积效应的影响。以干燥特性、动力学和干制品品质为指标,基于主成分分析获得黄秋葵干燥条件,热风温度70℃,干燥时间为300min,有效水分扩散系数为1.36×10^(-9)m^(2)/s,所得干制品VC含量7.71mg/100 g、复水比6.03、硬度3.25 N。Abelmoschus moschatus L.Medic.was dried with different methods and at different temperatures.The effects of different drying conditions on the drying characteristics,kinetics,and quality of A.moschatus were studied.The results showed that moisture content(d.b.)had significant effect on the drying rate of hat air drying(HAD)and little effect on that of far-infrared drying(FID).Midilli model was suitable for fitting the HAD and FID processes of A.moschatus.At the same temperature,HAD showed the effective moisture diffusivity 0.52-1.10 times higher than FID and required the activation energy 5481.76 J/mol lower than FID.The VC degradation,rehydration ratio,and hardness of the dried products were influenced by the cumulative effects of temperature and time.Finally,with the drying characteristics,kinetics,and quality of dried products as the indicators,the drying conditions for A.moschatus were determined by principal component analysis as HAD at 70℃for 300 min,under which the effective moisture diffusivity was 1.36×10^(-9)m^(2)/s and the dried product had the VC content of 7.71 mg/100 g,the rehydration ratio of 6.03,and the hardness of 3.25 N.

关 键 词：黄秋葵 热风干燥 远红外干燥 干燥特性 动力学 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]