FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (12): 346-349.

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Study on Sterilization of Fresh Milk with Ultrasonic Technology

 LIU  Fei-Yun, PAN  Dao-Dong, YAN  Yu-Ting   

  1. Institution of Dairy Biotechnology,Nanjing Normal University,Nanjing 210097,China
  • Online:2008-12-15 Published:2011-12-08

Abstract: Fresh milk was treated by different ultrasonic powers and time to study the bactericidal effect. Results indicated that,treating fresh milk with ultrasonic of 600 W for 3 min,the sterilization rate reachs 93%. Treated with the combination of ultrasonic with heat sterilization,the quality of milk stored under 4 ℃ was also studied. Results showed that,treated with ultrasonic of 600 W for 3 min and then heated at 63 ℃ for 30 min,the quality of milk is better than others. The storage period of the treated milk can be prolonged to about 16 days under 4 ℃.

Key words: fresh milk, ultrasonic, sterilization