| 壳聚糖抗菌膜中山梨酸钾迁移的数学模型及实验分析 |
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| 引用本文： | 卢鹏,王志耕,梅林,薛秀恒,朱莹. 壳聚糖抗菌膜中山梨酸钾迁移的数学模型及实验分析[J]. 食品工业科技, 2012, 0(2): 112-114,118 |
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| 作者姓名： | 卢鹏 王志耕 梅林 薛秀恒 朱莹 |
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| 作者单位： | 安徽农业大学茶与食品科技学院,安徽合肥,230036 |
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| 摘 要： | 运用Fick第二定律对壳聚糖抗菌膜中山梨酸钾的迁移过程进行预测,建立其数学模型。结果表明,当山梨酸钾初始浓度相同,壳聚糖浓度升高时,扩散系数D减小;当壳聚糖浓度不变时,山梨酸钾浓度升高扩散系数D变大。通过幂律模型Mt/M∞=k×tn可确定实验中的山梨酸钾在壳聚糖抗菌膜中迁移机制的类型为菲克扩散。
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| 关 键 词： | 山梨酸钾 壳聚糖 迁移 数学模型 |
Analysis and modeling of potassium sorbate diffusionthrough chitosan films |
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| LU Peng,WANG Zhi-geng,MEI Lin,XUE Xiu-heng,ZHU Ying. Analysis and modeling of potassium sorbate diffusionthrough chitosan films[J]. Science and Technology of Food Industry, 2012, 0(2): 112-114,118 |
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| Authors: | LU Peng WANG Zhi-geng MEI Lin XUE Xiu-heng ZHU Ying |
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| Affiliation: | (College of Tea & Food Science and Technology,Anhui Agricultural University,Hefei 230036,China) |
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| Abstract: | Fick’s second law was applied to investigate the mechanism of potassium sorbate release from chitosan films.The mathematical model was established.The result showed that,the diffusion coefficient D decreased with the increase of chitosan concentration when the initial concentration of potassium sorbate was constant.The diffusion coefficient D increased with the increase of potassium sorbate concentration when the concentration of chitosan was constant.The mechanisms of potassium sorbate diffusion through chitosan films were mainly Fickian and determined by the power law model Mt/M∞=k×tn. |
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| Keywords: | potassium sorbate chitosan migration mathematical model |
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