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

  • 2022-02-17
  • Microorganisms 10(2)
    • M. Iorizzo
    • Gianluca Albanese
    • Francesco Letizia
    • Bruno Testa
    • P. Tremonte
    • F. Vergalito
    • S. J. Lombardi
    • M. Succi
    • R. Coppola
    • E. Sorrentino

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.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Lactiplantibacillus plantarumEnhanced Disease ResistanceBeneficial
Moderate
Lactiplantibacillus plantarumImproved Antioxidant ActivityBeneficial
Moderate
Lactiplantibacillus plantarumImproved Gut HealthBeneficial
Moderate
Lactiplantibacillus plantarum Lp-115Enhanced Disease ResistanceBeneficial
Moderate
Lactiplantibacillus plantarum Lp-115Improved Antioxidant ActivityBeneficial
Moderate
Lactiplantibacillus plantarum Lp-115Improved Gut HealthBeneficial
Moderate
Lactiplantibacillus plantarum Lp-115Reduced Pathogen ActivityBeneficial
Large
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