Permeabilization and lysis induced by bacteriocins and its effect on aldehyde formation by Lactococcus lactis

被引:0
|
作者
M. Carmen Martínez-Cuesta
Teresa Requena
Carmen Peláez
机构
[1] Instituto del Frío (CSIC),Department of Dairy Science and Technology
来源
Biotechnology Letters | 2006年 / 28卷
关键词
Bacteriocin; Cell permeabilization; Cheese aroma; Lacticin 3147;
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学科分类号
摘要
Permeabilization induced by lacticin 3147, lactococcins A, B and M, enterocin AS-48 and nisin, bacteriocins described as cell membrane-pore forming and lytic agents, enhanced in all cases aldehyde formation by Lactococcus lactis IFPL730. Nevertheless, the conversion of isoleucine into 2-methylbutyraldehyde depended not only on the degree of permeabilization but also on the bacteriocin that caused the cell membrane damage. The highest values of 2-methylbutyraldehyde corresponded to cell suspensions containing lacticin 3147 and lactococcins, treatments that provoked further lysis in addition to induced permeabilization.
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页码:1573 / 1580
页数:7
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