高密度二氧化碳技术对牛奶杀菌效果动力学分析

化工学报 ›› 2010, Vol. 61 ›› Issue (1): 146-151.

高密度二氧化碳技术对牛奶杀菌效果动力学分析

钟葵,黄文,廖小军,胡小松

华中农业大学食品科学技术学院; 农业部果蔬加工重点开放实验室

出版日期:2010-01-05 发布日期:2010-01-05

Inactivation kinetics of total bacteria counts in milk exposed to dense phase carbon dioxide

ZHONG Kui，HUANG Wen，LIAO Xiaojun，HU Xiaosong

Online:2010-01-05 Published:2010-01-05

摘要/Abstract

关键词: 高密度二氧化碳技术, 牛奶, 杀菌效果, 动力学分析

Abstract:

Inactivation kinetics of total bacteria counts in the milk exposed to dense phase carbon dioxide (DPCD) was investigated.Stronger inactivation of total bacteria counts was achieved at higher pressure and exposure time (p<0.05）.Treatment temperature had synergistic effects with pressure and expose time on the inactivation of total bacteria counts，and lg(N/N₀) significantly decreased when increasing the temperature (p<0.05）.The maximum reduction was 5.082-log at 30 MPa and 50℃ for 70 min.The survival curves of total bacteria counts in the milk against pressure or temperature were fitted by the Weibull model with high regression coefficients，and model parameters，a value (scale factor) and b value (shape factor) changed regularly with increasing pressure or temperature.

Key words: 高密度二氧化碳技术, 牛奶, 杀菌效果, 动力学分析

钟葵, 黄文, 廖小军, 胡小松. 高密度二氧化碳技术对牛奶杀菌效果动力学分析 [J]. 化工学报, 2010, 61(1): 146-151.

ZHONG Kui, HUANG Wen, LIAO Xiaojun, HU Xiaosong. Inactivation kinetics of total bacteria counts in milk exposed to dense phase carbon dioxide[J]. CIESC Journal, 2010, 61(1): 146-151.

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