D. L. Harris, A. Mahapatra, B. L. Jones, G. Kannan
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引用次数: 1
摘要
采用低压交流电(AC)灭活牛肉样品表面粘附的大肠杆菌O157:H7。用大肠杆菌接种牛肉样品(25 × 25 × 25 mm)，置于氯化钠溶液中作为电解质。对牛肉样品施加电流(AC)。研究了1、10和100 kHz的频率和300 mA (15 mA/cm 2)、600 mA (30 mA/cm 2)和900 mA (45 mA/cm 2)的电流强度，处理时间分别为2,8和16 min。在900 mA (45 mA/ cm2)电流强度和1 kHz频率下，使用16分钟的处理时间，实现了2.15 log 10的降低。
Efficacy of low-voltage AC for inactivating surface adherent Escherichia coli O157:H7 on beef
Experiments were conducted using low-voltage alternating current (AC) to inactivate surface adherent Escherichia coli O157:H7 on beef samples. Beef samples (25 × 25 × 25 mm) were inoculated with E. coli and placed in sodium chloride solution which served as an electrolyte. Electrical current (AC) was applied to the beef samples. Frequencies of 1, 10, and 100 kHz and current intensities of 300 mA (15 mA/cm 2 ), 600 mA (30 mA/cm 2 ), and 900 mA (45 mA/cm 2 ) at treatment durations of 2, 8, and 16 min were investigated. A 2.15 log 10 reduction was achieved using a 16 min treatment time with 900 mA (45 mA/cm 2 ) current intensity and 1 kHz frequency.
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