旋转闪蒸干燥南极磷虾的干燥特性和动力学模型  

Spin-flash drying characteristics and kinetic model of antarctic krill

作　　者：谈佳玉[1,2,3] 欧阳杰 马田田[1,2,3] 沈建 TAN Jiayu;OUYANG Jie;MA Tiantian;SHEN Jia(Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Science,Shanghai 200092,China;Key Laboratory of Ocean Fishing Vessel and Equipment,Ministry of Agriculture,Shanghai 200092,China;Collaborative Innovation Center of Seafood Deep Processing,Dalian Polytechnic University,Dalian,Liaoning 116034,China)

机构地区：[1]中国水产科学研究院渔业机械仪器研究所,上海200092 [2]农业农村部远洋渔船与装备重点实验室,上海200092 [3]大连工业大学海洋食品精深加工关键技术省部共建协同创新中心,辽宁大连116034

出　　处：《食品与机械》2023年第10期42-48,共7页Food and Machinery

基　　金：中国水产科学研究院院级基本科研业务费专项(编号:2020XT1202);青岛海洋科学与技术试点国家实验室山东省专项经费(编号:2022QNLM03002-3)。

摘　　要：目的:实现南极磷虾旋转闪蒸干燥过程的控制。方法:对南极磷虾在120~180℃范围内进行干燥试验,选取常用的6种干燥模型对试验数据进行拟合,进一步采用回归分析建立干燥模型常数项与温度的方程,得到干燥模型表达式并进行验证。根据Fick第二定律方程计算得到南极磷虾干燥水分扩散系数。结果:干燥温度对干燥热效率和干燥速率的影响显著,干燥温度为130~180℃的南极磷虾干燥曲线均为降速干燥阶段。Page模型适合用来描述和预测南极磷虾旋转闪蒸干燥过程,回归分析得到模型常数项方程为k=exp(-27.5321+0.3018 T-8.5382×10^(-4)T^(2))、n=14.0106-0.15767 T+4.7509×10^(-4)T^(2)。随着温度的升高,南极磷虾有效水分扩散系数从2.53935×10^(-7)m^(2)/s升高到13.88964×10^(-7)m^(2)/s。结论:采用旋转闪蒸干燥方式可以有效保护南极磷虾中的热敏性成分不被破坏,提高产品品质。Objective:The purpose of this study was to investigate the drying characteristics and establish the kinetic model of Antarctic krill during spin-flash drying.The drying experiments were carried out at 120℃to 180℃.Methods:Six common thin-layer drying models were selected to fit the experimental data.Further,the equations of drying model constant and temperature were established to obtain the model expression and validate the optimal drying model.The effective moisture diffusion coefficients were calculated by Fick's second law.Results:The results showed the drying temperature had a significant effect on drying thermal efficiency and drying rate.The spin-flash drying of Antarctic krill was a falling rate drying process at 130℃to 180℃.The Page model was suitable for describing and predicting the spin-flash drying process of Antarctic krill.The constant term equations of the model were established by regression analysis,which were k=exp(-27.5321+0.3018 T-8.5382×10^(-4)T^(2))and n=14.0106-0.15767 T+4.7509×10^(-4)T^(2).As the drying temperature increasing,the effective moisture diffusion coefficient increased from^(2).53935×10^(-7)m^(2)/s to 13.88964×10^(-7)m^(2)/s.Conclusion:The spin-flash drying method had the advantages of higher effective moisture diffusion coefficient and higher drying efficiency,which can effectively protect the thermal sensitive composition in Antarctic krill from being damaged and improve the product quality.

关 键 词：南极磷虾 旋转闪蒸干燥 干燥速率 动力学模型 有效水分扩散系数 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]