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OJVRTM
Online Journal of Veterinary Research©
Volume 21(2):85-93, 2017.
Effect of Pediococcus
diacetilactis and Lactobacillus reuteri and their cultured filtrates
on growth of antibiotic
resistant E.
coli and
S. aureus.
Alireza Sadeghi1*, Maryam Ebrahimi1,
Balal Sadeghi2, Seyed
Ali Mortazavi3
Department(s) of 1Food
Science and Technology, Gorgan University of
Agricultural Sciences and Natural Resources, Gorgan, 2Food
Hygiene and Public Health, Faculty of Veterinary Medicine, Shahid
Bahonar University of Kerman, Kerman, 3Food
Science and Technology, Ferdowsi University of Mashhad, Mashhad, Iran
ABSTRACT
Sadeghi A, Ebrahimi
M, Sadeghi B, Mortazavi
SA., Effect of Pediococcus diacetilactis
and Lactobacillus reuteri
and their cultured filtrates on growth of antibiotic resistant E. coli and S. aureus, Onl J Vet Res., 21(2):85-93, 2017.
Effect of Pediococcus diacetilis
and Lactobacillus reuteri
lactic acid bacteria (LAB) from whole wheat sourdough and their cell free
culture filtrate (CCF) on growth of antibiotic resistant E. coli and S.
aureus is described. LAB isolates were identified by PCR and components of
CCF were analyzed by gas chromatography. LAB had a significant
(P<0.05) effect on growth of gram-positive bacterium but P. diacetilactis per
se had no effect on growth of E. coli or S. aureus. Most
inhibition occurred in crude LAB filtrate but there were no significant
differences with neutral or treated CCFs. The filtrates appeared to inhibit S.
aureus rather than E. coli except for crude filtrate of P. diacetilactis which inhibited E coli. Components of filtrate of P. diacetilactis
determined by GC/MS included long chained fatty acids, fatty acid esters and
amides, aldehydes, dicarboxylic acids, piperidines,
quinolone derivatives and dipeptides. Findings suggest that the
filtrate of P.
diacetilactis CCF may affect growth of
antibiotic resistant bacteria.
Key words: LAB isolate, antibiotic
resistance zoonotic, antagonistic effect, GC/MS analysis.
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