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Isolation and characterization of a Bacillus velezensis D‑18 strain, as a potential probiotic in European seabass aquaculture

Monzón‑Atienza, Luis; Bravo, Jimena; Torrecillas, Silvia; Montero, Daniel; Franco González‑de Canales, Ana; García de la Banda, Inés; Galindo-Villegas, Jorge; Ramos-Vivas, José; Acosta, Felix
Peer reviewed, Journal article
Accepted version
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URI
https://hdl.handle.net/11250/3011266
Date
2021
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  • Artikler, rapporter og annet (FBA) [962]
  • Publikasjoner fra Cristin - Nord universitet [4092]
Original version
Monzón‑Atienza, L., Bravo, J., Torrecillas, S., Montero, D., González‑de Canales, A. F., García de la Banda, I., Galindo-Villegas, J., Ramos‑Vivas, J. & Acosta, F. (2021). Isolation and characterization of a Bacillus velezensis D‑18 strain, as a potential probiotic in European seabass aquaculture. Probiotics and Antimicrobial Proteins, 13, 1404-1412. doi:   10.1007/s12602-021-09782-8
Abstract
Within the food-producing sectors, aquaculture is the one that has developed the greatest growth in recent decades, currently representing almost 50% of the world’s edible fish. The diseases can affect the final production in intensive aquaculture; in seabass, aquaculture vibriosis is one of the most important diseases producing huge economical losses in this industry. The usual methodology to solve the problems associated with the bacterial pathology has been the use of antibiotics, with known environmental consequences. This is why probiotic bacteria are proposed as an alternative fight against pathogenic bacteria. The aim of this study was to analyse a strain of Bacillus velezensis D-18 isolated from a wastewater sample collected from a fish farm, for use as probiotics in aquaculture. The strain was evaluated in vitro through various mechanisms of selection, obtaining as results for growth inhibition by co-culture a reduction of 30%; B. velezensis D-18 was able to survive at 1.5-h exposure to 10% seabass bile, and at pH 4, its survival is 5% and reducing by 60% the adhesion capacity of V. anguillarum 507 to the mucus of seabass and in vivo by performing a challenge. Therefore, in conclusion, we consider B. velezensis D-18 isolate from wastewater samples collected from the farms as a good candidate probiotic in the prevention of the infection by Vibrio anguillarum 507 in European seabass after in vitro and biosafety assays.
Description
 
Author's accepted version (postprint)
 
This is an Accepted Manuscript of an article published by Springer in Probiotics and Antimicrobial Proteins on 03/04/2021
 
Available online: https://link.springer.com/content/pdf/10.1007/s12602-021-09782-8.pdf
 
Publisher
Springer
Journal
Probiotics and Antimicrobial Proteins
Copyright
© 2021 The Author(s), under exclusive licence to Springer Science + Business Media, LLC

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