热压协同对嗜热脂肪芽孢杆菌芽孢灭活动力学的研究

被引:4
作者
王标诗 [1 ]
李汴生 [2 ]
曾庆孝 [2 ]
黄娟 [3 ]
阮征 [2 ]
李琳 [2 ]
机构
[1] 湛江师范学院化学科学与技术学院
[2] 华南理工大学轻工与食品学院
[3] 广州市产品质量监督检验所
基金
国家自然科学基金重点项目; 广东省自然科学基金;
关键词
超高静压; 中温; 嗜热脂肪芽孢杆菌芽孢; 灭活动力学;
D O I
10.13386/j.issn1002-0306.2009.05.023
中图分类号
TS201.3 [食品微生物学];
学科分类号
082203 ;
摘要
研究了热压协同(500~600MPa,80~90℃)对嗜热脂肪芽孢杆菌芽孢在磷酸缓冲液和牛奶(经超高温灭菌)中灭活的动力学规律,并对超高静压的升压过程及相应的灭活效果进行了研究。结果表明,升压过程对嗜热脂肪芽孢杆菌芽孢灭活的影响不能忽略,且随压力增加这种效果越强,最高使其下降1·23个数量级;嗜热脂肪芽孢杆菌在牛奶中比在磷酸缓冲液中有更高的抗性;在3种拟合模型(线性、Weibull和Log-logistic模型)中,线性模型不适合模拟这些存活曲线,而Log-logistic模型能更好地模拟这些存活曲线,其次是Weibull模型。
引用
收藏
页码:112 / 115
页数:4
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