Growth inhibition of pathogens by lactic acid bacteria producing inhibitory substances
Medical Journal of the Islamic Republic of Iran. 1996; 10 (2): 159-163
em Inglês
| IMEMR
| ID: emr-42069
ABSTRACT
71 samples of milk and dairy products were collected from 18 cities throughout Iran. 93 strains of lactic acid bacteria [LAB] were isolated and assayed against four opportunistic pathogens including E. coli, proteus and klebsiella as gram-negative and S. aureus as a gram-positive organism. All indicators [organisms] were hospital strains. Among isolated bacteria, lactobacilli [37 isolates] had stronger activity against gram-negative pathogens. 37 isolates were lactococci out of which 9 strains were leuconostocs and seven strains were S.faecalis. S. aureus was more sensitive to lactococci than lactobacilli. Only one isolate of leuconostoc inhibited the growth of gram-negative indicators, but five isolates inhibited S. aureus. The use of bacteriocin-producing lactic acid bacteria in dairy products provides a natural mean of preservation
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Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Lactobacillus
Idioma:
Inglês
Revista:
Med. J. Islamic Rep. Iran
Ano de publicação:
1996
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