食品科学 ›› 2009, Vol. 30 ›› Issue (10): 265-268.doi: 10.7506/spkx1002-6630-200910063

• 包装贮运 • 上一篇    下一篇

动力学模型预测鲳鱼货架寿命的实验研究

佟 懿,谢 晶*   

  1.  上海海洋大学食品学院
  • 收稿日期:2008-09-22 修回日期:2009-01-03 出版日期:2009-05-15 发布日期:2010-12-29
  • 通讯作者: 谢晶 E-mail:jxie@shou.edu.cn
  • 基金资助:

    “十一五”国家科技支撑计划重点项目(2006BAD30B03);
    上海市“科技创新行动计划”2008 年度生物医药和农业科技领域重点科技项目(08391911500)

Experimental Research on Application of Kinetic Model to Predict Shelf-life of Pampus argenteus

TONG Yi,XIE Jing*   

  1. (College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China)
  • Received:2008-09-22 Revised:2009-01-03 Online:2009-05-15 Published:2010-12-29
  • Contact: XIE Jing* E-mail:jxie@shou.edu.cn

摘要:

通过不同温度下的贮藏实验研究了鲳鱼的菌落总数、挥发性盐基氮(TVB-N)、鲜度指标(K 值)与感官指标随贮藏时间的变化规律。建立了菌落总数、挥发性盐基氮和鲜度指标K值与贮藏时间及贮藏温度之间的动力学模型。实验表明一级化学反应动力学模型和Arrhenius 方程对微生物数量、挥发性盐基氮(TVBN)及鲜度指标(K 值)的变化具有较高的拟合精度(R2 > 0.9)。菌落总数变化预测模型中的EA 及k0 分别为:47.60kJ/mol 和1.568 × 109,挥发性盐基氮变化的EA 及k0 分别为:50.80kJ/mol 和1.490 × 109,鲜度指标K 值变化的EA 及k0 分别为:43.81K J/mol 和3.553 × 107。

关键词: 鲳鱼, 动力学模型, 菌落总数, 挥发性盐机氮, K 值

Abstract:

Total viable count (TVC), total volatile base-nitrogen (TVB-N) value, freshness index (K value) and sensory evaluation of Pampus argenteus (pomfret) at different storage temperatures were assessed to investigate the relation between the shelf life and temperature. The Arrhenius models of TVC, TVB-N value and K-value with respect to storage time and temperature were developed. The high regression coefficients(R2 > 0.9)indicated the acceptability of the first order reaction and Arrhenius model for predicting the changes of TVC, TVBN value and K-value of pomfret. The activation energy (EA) and preexponential factor (k0) of TVC, total volatile base-nitrogen value, and K-value prediction models were 47.60 kJ/mol and1.568 × 109, 50.80 kJ/mol and1.490 × 109, and 43.81 kJ/mol and 3.553 × 107 respectively.

Key words: pomfret, kinetics model, TVC, TVB-N, K value

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