摘要
Treatment of milk with argon gas plasma was investigated for its ability to kill bacteria and increase shelf life and compared with commercially pasteurized milk. The discharge was generated by a nanosecond pulse generator using the needle point-to-plate electrode. The total bacterial count of 6.8 log CFU/mL in raw milk was reduced to 1.9 log CFU/mL after 2min of plasma treatment and 2.2 log CFU/mL after 30min of pasteurization. The plasma treated milk stored at 4 degrees C showed no significant changes in the bacterial count for 6weeks while the bacterial counts in pasteurized milk were significantly increased from 2.2 to 4.2 log CFU/mL after 2weeks. These results demonstrated plasma treatment as an alternative way to decontaminate and increase shelf life of milk.
- 出版日期2017-11
- 单位迪肯大学