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首页> 外文期刊>International Dairy Journal >Effect of combinations of high-pressure treatment and bacteriocin-producing lactic acid bacteria on the survival of Listeria monocytogenes in raw milk cheese.
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Effect of combinations of high-pressure treatment and bacteriocin-producing lactic acid bacteria on the survival of Listeria monocytogenes in raw milk cheese.

机译:高压处理和产生细菌素的乳酸菌组合对生乳干酪中单核细胞增生李斯特菌存活的影响。

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摘要

The combined effect of high-pressure (HP) treatment and bacteriocin-producing lactic acid bacteria (BP-LAB) on the survival of Listeria monocytogenes Scott A in cheeses made from raw milk that was inoculated with the pathogen at 4.80 log cfu mL-1, a commercial starter and one of seven strains of BP-LAB was investigated. On day 3, the counts of L. monocytogenes were 7.03 log cfu g-1 in a control cheese (without BP-LAB, not HP treated), 6.06-6.74 log cfu g-1 in cheeses with BP-LAB, 6.13 log cfu g-1 in a cheese without BP-LAB and treated on day 2 at 300 MPa, 2.01 log cfu g-1 in a cheese without BP-LAB and treated on day 2 at 500 MPa, 3.83-5.43 log cfu g-1 in cheeses with BP-LAB and treated on day 2 at 300 MPa, and 1.81 log cfu g-1 or less in cheeses with BP-LAB and treated on day 2 at 500 MPa. HP treatment was more effective on day 51 than on day 2..
机译:高压(HP)处理和产细菌素的乳酸菌(BP-LAB)对单生李斯特菌李斯特菌(Scott A)在以4.80 log cfu mL-1接种病原菌的生奶制成的奶酪中存活的综合影响,商业发酵剂和7种BP-LAB菌株之一进行了研究。在第3天,对照干酪(未经BP-LAB,未经HP处理)中单核细胞增生李斯特氏菌的计数为7.03 log cfu g-1,使用BP-LAB的干酪中的单核细胞增生李斯特菌计数为6.06-6.74 log cfu g-1,6.13 log cfu在没有BP-LAB的干酪中进行g-1处理,在第2天以300 MPa处理,在第2天以500 MPa处理,干酪中的g-1为3.83-5.43 log cfu g-1。使用BP-LAB的奶酪在第2天以300 MPa的压力处理,在使用BP-LAB的奶酪在第2天以500 MPa的压力处理时,1.81 log cfu g-1或更低。 HP治疗在第51天比在第2天更有效。

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