食品科学 ›› 2001, Vol. 22 ›› Issue (12): 69-72.

• 包装贮运 • 上一篇    下一篇

阻抗法快速预测盒装巴氏奶货架期

 李志勇, 易敏英,  高健婷,  翁文川,  许龙岩   

  1. 广州出入境检验检疫局
  • 出版日期:2001-12-15 发布日期:2012-02-14

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

 LI  Zhi-Yong, YI  Min-Ying,   Gao-Jian-Ting,   Weng-Wen-Chuan,   Xu-Long-Yan   

  • Online:2001-12-15 Published:2012-02-14

摘要: 采用阻抗法进行盒装风行巴氏奶货架期预测。结果表明,风行巴氏奶货架期与细菌数对数值密切相关。在30℃、6h预培养下加样100、200μ1及37℃、6h预培养下加样100~400μ1进行阻抗测定,建立回归方程式均可快速准确地进行盒装风行巴氏货架期预测,整个预测过程耗时11~14h。

关键词: 阻抗法, 货架期预测, 巴氏奶

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;