食品科学

• 基础研究 • 上一篇    下一篇

非渗透包装下双组分食品间水分扩散模型研究

陈亚慧,卢立新,王 军   

  1. 1.江南大学机械工程学院,江苏 无锡 214122;2.江苏省食品先进制造装备技术重点实验室,江苏 无锡 214122
  • 出版日期:2014-09-15 发布日期:2014-09-12

Modeling of Moisture Diffusion in Two-Component Food with Impermeable Package

CHEN Ya-hui, LU Li-xin, WANG Jun   

  1. 1. School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China;
    2. Jiangsu Province Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi 214122, China
  • Online:2014-09-15 Published:2014-09-12

摘要:

采用Fick第二定律,结合食品等温吸湿模型和水分有效扩散理论,建立了非渗透包装下双组分食品间水分扩散模型;以饼干和琼脂凝胶包装为研究对象,基于实验表征等温吸湿模型和有效扩散系数,得到研究对象间水分扩散数值解并与实验结果进行对比分析。结果表明,理论模型与实验数据的吻合度高。

关键词: 双组分食品, 水分扩散, 包装, 理论模型

Abstract:

In this study, a moisture diffusion model of two-component food under a non-permeable packaging condition wasestablished on the basis of Fick’s law combined with moisture sorption isotherm and effective moisture diffusion theory. Themoisture sorption isotherm models and the isotherm effective diffusion coefficients for agar gel and biscuits were establishedbased on the experimental data, and then the model-calculated and experimental values of moisture diffusion were compared.The results showed that the experimental data could be fitted with the theoretical model very well.

Key words: two-component food, moisture diffusion, packaging, theoretical model

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