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. 2022 Feb 17;10(2):463.
doi: 10.3390/microorganisms10020463.

Probiotic Potentiality from Versatile Lactiplantibacillus plantarum Strains as Resource to Enhance Freshwater Fish Health

Massimo Iorizzo  1 , Gianluca Albanese  1 , Francesco Letizia  1 , Bruno Testa  1 , Patrizio Tremonte  1 , Franca Vergalito  1 , Silvia Jane Lombardi  1 , Mariantonietta Succi  1 , Raffaele Coppola  1 , Elena Sorrentino  1
Affiliations

Probiotic Potentiality from Versatile Lactiplantibacillus plantarum Strains as Resource to Enhance Freshwater Fish Health

Massimo Iorizzo et al. Microorganisms. .

Abstract

Dietary probiotic supplementation has the potential to enhance the health of fish and their disease resistance. In this study, some properties of ten Lactiplantibacillus plantarum strains have been evaluated, for their potential use as probiotics in freshwater fish diet. In particular, antimicrobial activity, antioxidant activity, the potentiality to survive the gastrointestinal transit and persist in the intestine, were evaluated in vitro. The experimental tests were carried out at 15 °C and 30 °C to determine the suitability of these lactic acid bacteria to be used as probiotics in the diet of fish grown at different temperatures. The results demonstrated that the evaluated Lp. plantarum strains, which often have significant differences among themselves, are characterized by important functional characteristics such as cell surface properties (auto-aggregation and hydrophobicity), ability to produce antioxidant substances, capacity to survive in the presence of 0.3% bile salts and acidic environment (2.5 pH), antagonistic activity against some fish opportunistic pathogens (A. salmonicida, Ps. aeruginosa, E. coli and C. freundii) and other unwanted bacteria present in fish products (S. aureus and L. innocua). The outcomes suggest that these Lp. plantarum strains may be candidates as probiotics in warm- and cold-water aquaculture.

Keywords: Lactiplantibacillus plantarum; aquaculture; fish health; probiotic.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Adhesion of the Lp. plantarum strains to toluene and xylene expressed as hydrophobicity (%) after 15, 30, and 60 min contact time (CT) at 15 °C (A) and 30 °C (B).
Figure 2
Figure 2
Auto-aggregation (AA%) of the Lp. plantarum strains at 15 °C (A) and 30 °C (B).
See this image and copyright information in PMC

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