Rapid Impedance Method for Predicting the Potential Shelf-Life of Packaged Pasteurized Milk

Abstract

Abstract: Estimation of potential shelf-life of packaged pasteurized milk utilizing impedance method was studied. The results showed that there was a highly correlativity between shelf-life of ’Fengxing` pasteurized milk and logarithm of CFU per milliliter.The impedance detect time (DT)after 30℃,6 hour’s preliminary incubation added with 100μl and 200μl milk sample or after 37℃ ,6 hours’preliminary incubation added with 100 to 400μl milk sample were investigated and the regressive equation was constructed for predicting the potential shelf-life. Comparing to traditional method, Impedance method was a rapid, accurate and convenient method and the whole estimation process could finished within 11～14 hours.

Key words: , Impedance method Prediction of shelt-life Pasteurized milk；

LI Zhi-Yong, YI Min-Ying, Gao-Jian-Ting, Weng-Wen-Chuan, Xu-Long-Yan. Rapid Impedance Method for Predicting the Potential Shelf-Life of Packaged Pasteurized Milk[J]. FOOD SCIENCE, 2001, 22(12): 69-72.

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Rapid Impedance Method for Predicting the Potential Shelf-Life of Packaged Pasteurized Milk

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