| 搅拌式有限氧补偿条件下乳状液中多不饱和脂肪酸氧化模型 |
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| 引用本文： | 吕兵,陈洁,夏文水.搅拌式有限氧补偿条件下乳状液中多不饱和脂肪酸氧化模型[J].中国化学工程学报,2008,16(2):218-222. |
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| 作者姓名： | 吕兵 陈洁 夏文水 |
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| 作者单位： | 1. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;2. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China |
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| 摘 要： | The oxidation of polyunsaturated fatty acids （PUFA） in emulsion with stirring and limited oxygen compensation was studied. A mathematical model of diffusion-oxidation was developed considering the mass transfer resistance of a gas-liquid boundary, the resistance of the boundary layer from the emulsifier membrane, and the autocatalytic-type autoxidation reaction of PUFA. The dynamic mass transfer coefficient of the emulsifier membrane, k0, was introduced. The model was verified by comparing the predictions of the model with the experi- mental data. The results indicated that the model was in good agreement with the oxygen diffusion and linoleic acid oxidation in the emulsion, and showed good applicability in the prediction of the effect of the emulsifier type on the oxidation of PUFA in the emulsion. It indicated that the oxidation of PUFA in emulsions, with stirring and limited oxygen compensation from the atmosphere, was controlled mostly by mass transfer resistance from the emulsifier membrane.
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| 关 键 词： | polyunsaturated fatty acids oxidation emulsion mathematical model limited oxygen compensation |
| 收稿时间： | 4 July 2007 |
| 修稿时间： | 2007年7月4日 |
Mathematical modeling of the oxidation of polyunsaturated fatty acids in emulsions with stirring and limited oxygen compensation |
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| LÜ,Bing,CHEN Jie,XIA Wenshui.Mathematical modeling of the oxidation of polyunsaturated fatty acids in emulsions with stirring and limited oxygen compensation[J].Chinese Journal of Chemical Engineering,2008,16(2):218-222. |
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| Authors: | LÜ Bing CHEN Jie XIA Wenshui |
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| Affiliation: | 1. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;2. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China |
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| Abstract: | The oxidation of polyunsaturated fatty acids (PUFA) in emulsion with stirring and limited oxygen compensation was studied. A mathematical model of diffusion-oxidation was developed considering the mass transfer resistance of a gas-liquid boundary, the resistance of the boundary layer from the emulsifier membrane, and the autocatalytic-type autoxidation reaction of PUFA. The dynamic mass transfer coefficient of the emulsifier membrane, k0, was introduced. The model was verified by comparing the predictions of the model with the experi-mental data. The results indicated that the model was in good agreement with the oxygen diffusion and linoleic acid oxidation in the emulsion, and showed good applicability in the prediction of the effect of the emulsifier type on the oxidation of PUFA in the emulsion. It indicated that the oxidation of PUFA in emulsions, with stirring and limited oxygen compensation from the atmosphere, was controlled mostly by mass transfer resistance from the emulsifier membrane. |
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| Keywords: | polyunsaturated fatty acids oxidation emulsion mathematical model limited oxygen compensation |
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