Isolation, identification and antimicrobial activity of lactic acid bacteria from the Bahía Blanca Estuary
This study analyzed the biodiversity of lactic acid bacteria present in the Bahía Blanca Estuary and their antimicrobial activity against pathogens associated with the cultivation of salmonid. A total of 21 lactic acid bacteria (LAB) strains were isolated from superficial sediments and fish of the estuary. The fish species were selected from those that spend most of their life cycle in the estuary. According to 16S rDNA analysis, isolates were affiliated with the genera Lactobacillus, Pediococcus, Leuconostoc, Enterococcus and Weissella. The predominant LAB isolates from the fish species belonged to Weissella viridescens, which was isolated from three of the four species analyzed. None of the LAB species isolated from fish was found in sediments. The agar diffusion method was used for detection of antagonistic activity against Listeria monocytogenes, Yersinia ruckeri, Aeromonas salmonicida subsp. salmonicida and two strains of Lactococcus garvieae. All the isolates exhibited some degree of antagonistic activity against L. monocytogenes, Y. ruckeri and both strains of Lc. garvieae. Twelve strains were found to be inhibitory for A. salmonicida. This study is the first report on the diversity of lactic acid bacteria in a coastal marine environment and fish from Argentina. The sediments and fish analyzed showed microbial strains with the ability to suppress pathogen growth under in vitro conditions, suggesting their potential as biological control agents for aquaculture and fish processing.
Main Authors: | Sica,María G, Olivera,Nelda L, Brugnoni,Lorena I, Marucci,Patricia L, López-Cazorla,Andrea C, Cubitto,María A |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Universidad de Valparaíso. Facultad de Ciencias del Mar
2010
|
Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000300003 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Antimicrobial properties of lactic acid bacteria isolated from uruguayan artisan cheese
by: Fraga Cotelo,Martín, et al.
Published: (2013) -
Maldi-tof mass spectrometry for the identification and detection of antimicrobial activity of lactic acid bacteria isolated from local cheeses
by: KANAK,Eda Kılıç, et al.
Published: (2019) -
Tidal forecasting in the bahia blanca estuary, Argentina
by: Pierini,Jorge O, et al.
Published: (2009) -
Lactic acid bacteria with antimicrobial, proteolytic and lipolytic activities isolated from ovine dairy products
by: SILVA,Evandro Oliveira Onofre e, et al.
Published: (2020) -
Isolation, characterization, and antimicrobial evaluation of bacteriocin produced by lactic acid bacteria against Erwinia carotovora
by: PATO,Usman, et al.
Published: (2022)