| 油茶籽的吸附等温线及热力学性质 |
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| 引用本文： | 吴雪辉,李昌宝,杨公明.油茶籽的吸附等温线及热力学性质[J].江苏大学学报(自然科学版),2010,31(3). |
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| 作者姓名： | 吴雪辉 李昌宝 杨公明 |
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| 作者单位： | 华南农业大学,食品学院,广东,广州,510642 |
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| 基金项目： | 广东省科技计划项目(2006B20201023) |
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| 摘 要： | 为充分了解油茶籽水分含量与水分活度、温度之间的复杂关系,运用吸附原理,通过静态调整环境湿度法,研究了油茶籽不同温度下的吸附等温线,选择5种常用数学模型进行拟合,并在此基础上分析油茶籽的热力学性质.结果表明,修正Henderson模型的拟合度最高(R2=0.999 9,RMSE=0.007 1),根据该模型获知油茶籽在20,30,40℃下的相对安全水分含量和绝对安全水分含量分别为9.48%与8.00%,8.96%与7.57%,8.51%与7.19%.热力学性质显示,油茶籽的等量吸附热、吸附结合能均随平衡含水率的增加而不断下降,当平衡含水率一定时,吸附结合能随温度的升高而增大.
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| 关 键 词： | 油茶籽 吸附等温线 数学模型 热力学性质 平衡含水率 |
Adsorption isotherms and thermodynamic properties of camellia oleifera seeds |
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| Wu Xuehui,Li Changbao,Yang Gongming.Adsorption isotherms and thermodynamic properties of camellia oleifera seeds[J].Journal of Jiangsu University:Natural Science Edition,2010,31(3). |
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| Authors: | Wu Xuehui Li Changbao Yang Gongming |
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| Institution: | College of Food Science/a>;South China Agricultural University/a>;Guangzhou/a>;Guangdong 510642/a>;China |
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| Abstract: | In order to reveal the complex relationships among the moisture content,the water activity and the temperature of camellia oleiferaseeds,and to provide fundamental data for storage and processing,the adsorption isotherms of camellia oleiferaseeds at different temperatures were determined by statically adjusting the ambient humidity based on the adsorption theory.The obtained isotherms were fitted to five commonly-used mathematical models.The thermodynamic properties of camellia oleiferaseeds were analyzed.T... |
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| Keywords: | camellia oleiferaseed adsorption isotherm mathematical models thermodynamic properties equilibrium moisture content |
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