Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation

›› 2008, Vol. 16 ›› Issue (2): 218-222.

Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation

吕兵^1,2, 陈洁¹, 夏文水^1,2

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

收稿日期:2007-07-04 修回日期:2007-10-25 出版日期:2008-04-28 发布日期:2008-04-28
通讯作者: LÜ Bing,E-mail:lubing6709@163.com
基金资助:
Supported by the National Natural Science Foundation of China(20401007)

Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation

LÜ Bing^1,2, CHEN Jie¹, XIA Wenshui^1,2

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

Received:2007-07-04 Revised:2007-10-25 Online:2008-04-28 Published:2008-04-28
Supported by:
Supported by the National Natural Science Foundation of China(20401007)

摘要/Abstract

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 gasliquid boundary,the resistance of the boundary layer from the emulsifier membrane,and the autocatalytictype 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 experimental 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.

关键词: polyunsaturated fatty acids oxidation, emulsion, mathematical model, limited oxygen compensation

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 gasliquid boundary,the resistance of the boundary layer from the emulsifier membrane,and the autocatalytictype 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 experimental 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.

Key words: polyunsaturated fatty acids oxidation, emulsion, mathematical model, limited oxygen compensation

吕兵, 陈洁, 夏文水. Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation[J]. , 2008, 16(2): 218-222.

LÜ Bing, CHEN Jie, XIA Wenshui. Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation[J]. , 2008, 16(2): 218-222.

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Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation

Mathematical Modeling of the Oxidation of Polyunsaturated Fatty Acids in Emulsions with Stirring and Limited Oxygen Compensation

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