EFFECT OF PRESERVATIVES AND GROWTH-FACTORS ON SECRETION OF LISTERIOLYSIN-O BY LISTERIA-MONOCYTOGENES

被引：13

作者：

MCKELLAR, RC

机构：

来源：

JOURNAL OF FOOD PROTECTION | 1993年 / 56卷 / 05期

关键词：

D O I：

10.4315/0362-028X-56.5.380

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：

The influence of selected preservatives and growth factors on listeriolysin O (LLO) secretion by Listeria monocytogenes was examined. Secretion of LLO was maximal in tryptic soy broth medium. LLO secretion paralleled growth at 10 and 30-degrees-C in buffered proteose peptone medium. LLO secretion was supported by a number of carbohydrates and was inhibited by long-chain (P13-18) polyphosphates. Cell yield but not LLO secretion was increased by agitation. Both growth and LLO secretion were inhibited by nitrite, while LLO secretion was selectively inhibited by sorbate and NaCl. These results suggest that LLO secretion is more sensitive than growth to the inhibitory action of preservatives.

引用

页码：380 / 384

页数：5

共 26 条

[1]

BARNES R, 1989, MMWR-MORBID MORTAL W, V38, P267

[2] AN EFFECT OF IRON LEVEL AND FOOD TYPE ON PRODUCTION OF HEMOLYSIN AND CATALASE OF LISTERIA-MONOCYTOGENES STRAIN SCOTT-A [J].