EFFECT OF PH AND THE BACTERIOCIN CARNOCIN-54 ON GROWTH AND CELL MORPHOLOGY OF 2 LEUCONOSTOC STRAINS

被引：11

作者：

BECKER, B ^{[1
]}

HOLZAPFEL, WH ^{[1
]}

VONHOLY, A ^{[1
]}

机构：

[1] UNIV WITWATERSRAND,DEPT MICROBIOL,JOHANNESBURG,SOUTH AFRICA

来源：

LETTERS IN APPLIED MICROBIOLOGY | 1994年 / 19卷 / 03期

关键词：

D O I：

10.1111/j.1472-765X.1994.tb00923.x

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Leuconostoc carnosum LA54A produces carnocin 54, a bacteriocin inhibitory to Listeria and closely related lactic acid bacteria. The effects of the pH of cell-free LA54 culture supernatants on the antibacterial activity of carnocin 54 was assessed using Leuc. mesenteroides DSM 20343 and TA10C as indicator strains. Carnocin 54 showed greatest activity against both strains at pH 4.5. At pH 6.5, activity was reduced, especially against Leuc. mesenteroides TA10C. Scanning electron microscopy showed irregular and rough surfaces on bacteriocin-treated cells at both pH values.

引用

页码：126 / 128

页数：3

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