FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (12): 316-319.

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Experimental Definition on TTT of Cap-packaged Dmilk

 GU  Xue-Lian, LIU  Yan-Chen, LIU  Bao-Lin, HUA  Ze-Zhao, WANG  Xin   

  1. 1.Institute of Food and Biological Technology, Shanghai University of Science and Technology, Shanghai 200093, China; 2.School of Automation Engineering, Northeast Dianli University, Jilin 132012, China
  • Online:2007-12-15 Published:2011-11-22

Abstract: This work mainly aimed at obtaining the curve of TTT. The change of milk quality was investigated at isothermal conditions. The curve of TTT was obtained by biochemical analysis and linear interpolation. The bacteria growth of milk was described by Gompertz equation. The results showed that the TBC was fitted better by Gompertz equation. When milk was storedat 4 ℃, 10 ℃, 15 ℃, 20 ℃ and 25 ℃, TBC has been beyond 30000 counts/ml in five days, four and a half days, four days, three days and one day while acidity has been beyond 20°T in five days, four and a half days, four and a half days, three days, and one day, respectively. The curve was met to use ETTI better.

Key words: curve of TTT, time-temperature indicator, shelf life, milk