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Titolo:
COMBINED EFFECTS OF PH AND TEMPERATURE ON LISTERIOLYSIN-O PRODUCTION BY LISTERIA-MONOCYTOGENES SLCC-5764
Autore:
SCHILLING LS; MARTIN SE;
Indirizzi:
UNIV ILLINOIS,DEPT FOOD SCI,569 BEVIER HALL,905 S GOODWIN AVE URBANA IL 61801 UNIV ILLINOIS,DEPT FOOD SCI URBANA IL 61801
Titolo Testata:
Journal of food protection
fascicolo: 10, volume: 59, anno: 1996,
pagine: 1076 - 1078
SICI:
0362-028X(1996)59:10<1076:CEOPAT>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEMOLYSIN; VIRULENCE; GROWTH; SECRETION; MICE;
Keywords:
LISTERIA MONOCYTOGENES; LISTERIOLYSIN O; ACIDIC MEDIA; ALKALINE MEDIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
L.S. Schilling e S.E. Martin, "COMBINED EFFECTS OF PH AND TEMPERATURE ON LISTERIOLYSIN-O PRODUCTION BY LISTERIA-MONOCYTOGENES SLCC-5764", Journal of food protection, 59(10), 1996, pp. 1076-1078

Abstract

Listeria monocytogenes SLCC 5764 was propagated at 4, 25, or 37 degrees C in tryptic soy broth (TSB) acidified with either acetic acid at pH 5.2, 5.7, or 7.0, or hydrochloric acid at pH 5.0, 5.7, or 7.0; or made alkaline with sodium hydroxide at pH 7.5, 8.5, or 9.5. These studies were undertaken to determine the combined effects of temperature andpH on the production of listeriolysin O (LLO). The LLO activity was greatest after the cells were propagated in TSB acidified by either acid to pH 7.0 at 37 degrees C. Very little LLO activity was detected forcells propagated at 4 degrees under acidic conditions. There were no significant differences found between the LLO produced in media acidified with either acid. The LLO activity was highest after the cells were propagated in media at pH 7.5 at 37 degrees C.

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Documento generato il 26/01/20 alle ore 16:08:03