食品科学 ›› 2006, Vol. 27 ›› Issue (5): 250-253.

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猪肉冷藏过程中微生物交互作用模型研究

 刘芳, 李云飞   

  1. 上海交通大学食品科学与工程系;上海交通大学机械与动力工程学院
  • 出版日期:2006-05-15 发布日期:2011-09-16

Model Study on Pork Microorganisms Interactions during Cold Storage

 LIU  Fang, LI  Yun-Fei   

  1. 1. Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 201101, China; 2. School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
  • Online:2006-05-15 Published:2011-09-16

摘要: 对猪肉冷藏过程中生长的典型微生物(乳酸菌、大肠菌群、假单胞菌、热死丝环菌、沙门氏菌、酵母菌)间的交互作用进行研究。由改良的Lotka-Volterra模型平衡方程获得每两微生物间拮抗系数,用于描述微生物间的拮抗作用。得出:酵母菌和乳酸菌对大肠菌群,假单胞菌,热死丝环菌和沙门氏菌具有较高的拮抗作用,反之这四种菌对酵母菌和乳酸菌的影响微弱(α12<α21)。酵母菌对乳酸菌具有较高的拮抗作用(α12(0.043)<α21(19.491))。大肠菌群,假单胞菌,热死丝环菌和沙门氏菌均对除自身菌以外的它种菌的生长影响较小。

关键词: 交互作用, 模型, 冷藏, 微生物, 猪肉

Abstract: The interactions of typical spoilage causing microorganisms (lactic acid bacteria, coliforms, Pseudomonads, Brochothrix thermosphacta, Salmonella, yeasts) growing on sliced pork shoulder were investigated. Interaction coefficients (α) acquired from the steady-state equation of the modified Lotka-Volterra model were used to describe the antagonistic activities of each pair of microorganisms. Yeasts and lactic acid bacteria showed greater effects on Coliforms, Pseudomonads, Brochothrix thermosphacta and Salmonella than vice versa (α12<α21), and yeasts had high antimicrobial activity on lactic acid bacteria (α12(0.043)<α21(19.491)). The last four microorganisms showed little antagonistic activity on others.

Key words:  , interactions; model; cold storage; microorganisms; pork;