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Position: Home > Articles > Predictive Modelling of Quality Changes and Pseudomonas Growth during Chilled Storage of Mutton MEAT RESEARCH 2013,27 (5) 5-9

冷却羊肉贮藏中品质变化及假单胞菌生长预测模型的建立

作  者:
刘莹莹;罗瑞明;卢君逸;胡聪
单  位:
宁夏大学农学院
关键词:
冷却羊肉;假单胞菌;pH值;挥发性盐基氮;预测模型
摘  要:
为研究冷却羊肉中微生物与理化指标之间的关系及建立优势腐败菌生长预测模型,文中对冷却羊肉的多个理化指标和主要致腐微生物进行研究。实验测定了冷却羊肉在4℃条件贮藏下菌落总数、pH值、挥发性盐基氮和主要致腐微生物假单胞菌(Pseudomonas)的变化。结果表明:pH值为先下降后上升;挥发性盐基氮值(TVB-N)和失水率初期平稳上升,后期快速增大。在4、7、10、15、20℃条件下,利用Matlab7.0拟合实验数据,得到Gompertz一级模型和平方根二级模型,对预测模型在4℃和10℃条件下进行验证,准确度在20%以内,可以有效地预测冷却羊肉中假单胞菌的生长变化。
译  名:
Predictive Modelling of Quality Changes and Pseudomonas Growth during Chilled Storage of Mutton
作  者:
LIU Ying-ying,LUO Rui-ming*,LU Jun-yi,HU Cong(School of Agriculture,Ningxia University,Yinchuan 750021,China)
关键词:
chilled mutton;Pseudomonas;pH;TVB-N;prediction model
摘  要:
The relationships between microbial and physiochemical properties for chilled mutton were investigated and predictive models for the growth of the major pathogenic bacteria Pseudomonas were established.Total bacterial colony,pH,total volatile basic nitrogen(TVB-N) and Pseudomonas count were measured during chilled storage of mutton at 4 ℃.The results showed that pH initially rose and then fell,TVB-N increased slowly at the early stage of storage and rapidly at the later stage.Gompertz models and square-root models describing the growth of Pseudomonas at 4,7,10,15 ℃ and 20 ℃ were fitted with Matlab 7.0 software.The growth models at 4 ℃ and 10 ℃ were valiated.Accuracy was observed within 20%,indicating good prediction capability.

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