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Mendonça CMN, Oliveira RC, Pizauro LJL, Pereira WA, Abboud K, Almeida S, Watanabe IS, Varani AM, Domínguez JM, Correa B, Venema K, Azevedo POS, Oliveira RPS. Tracking new insights into antifungal and anti-mycotoxigenic properties of a biofilm forming Pediococcus pentosaceus strain isolated from grain silage. Int J Food Microbiol 2023; 405:110337. [PMID: 37506547 DOI: 10.1016/j.ijfoodmicro.2023.110337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/26/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023]
Abstract
The present study offers detailed insights into the antifungal and anti-mycotoxigenic potential of a biofilm forming lactic acid bacterium (Pediococcus pentosaceus) against one atoxigenic (Aspergillus flavus) and two toxigenic (Aspergillus nomius and Fusarium verticillioides) fungal strains. The antifungal effect of P. pentosaceus LBM18 strain was initially investigated through comparative analysis of fungi physiology by macroscopic visual evaluations and scanning electron microscopy examinations. The effects over fungal growth rate and asexual sporulation were additionally accessed. Furthermore, analytical evaluations of mycotoxin production were carried out by HPLC-MS/MS to provide insights on the bacterial anti-mycotoxigenic activity over fungal production of the aflatoxins B1, B2, G1 and G2 as well as fumonisins B1 and B2. Finally, reverse transcription quantitative real-time PCR (RT-qPCR) analysis was employed at the most effective bacterial inoculant concentration to evaluate, at the molecular level, the down-regulation of genes aflR, aflQ and aflD, related to the biosynthesis of aflatoxins by the strain of Aspergillus nomius. The effects over mycotoxin contamination were thought to be result of a combination of several biotic and abiotic factors, such as interaction between living beings and physical-chemical aspects of the environment, respectively. Several possible mechanisms of action were addressed along with potentially deleterious effects ascribing from P. pentosaceus misuse as biopesticide, emphasizing the importance of evaluating lactic acid bacteria safety in new applications, concentrations, and exposure scenarios.
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Affiliation(s)
- Carlos M N Mendonça
- Laboratory of Microbial Biomolecules, Department of Biochemical and Pharmaceutical Technology, University of São Paulo, 05508-000 São Paulo, Brazil; Centre for Healthy Eating and Food Innovation (HEFI), Faculty of Science and Engineering, Maastricht University - campus Venlo, Villafloraweg 1, 5928 SZ Venlo, the Netherlands
| | - Rodrigo C Oliveira
- Laboratory of Microbial Biomolecules, Department of Biochemical and Pharmaceutical Technology, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Lucas J L Pizauro
- Department of Agricultural and Environmental Biotechnology, School of Agricultural and Veterinary Sciences (FCAV), UNESP, Jaboticabal, Brazil
| | - Wellison A Pereira
- Laboratory of Microbial Biomolecules, Department of Biochemical and Pharmaceutical Technology, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Kahlile Abboud
- Department of Agricultural and Environmental Biotechnology, School of Agricultural and Veterinary Sciences (FCAV), UNESP, Jaboticabal, Brazil
| | - Sonia Almeida
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Ii-Sei Watanabe
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Alessandro M Varani
- Department of Agricultural and Environmental Biotechnology, School of Agricultural and Veterinary Sciences (FCAV), UNESP, Jaboticabal, Brazil
| | - José M Domínguez
- Industrial Biotechnology and Environmental Engineering Group "BiotecnIA", Chemical Engineering Department, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain
| | - Benedito Correa
- Laboratory of Mycotoxins and Toxigenic Fungi, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, 05508-900 São Paulo, Brazil
| | - Koen Venema
- Department of Agricultural and Environmental Biotechnology, School of Agricultural and Veterinary Sciences (FCAV), UNESP, Jaboticabal, Brazil
| | - Pamela O S Azevedo
- Laboratory of Microbial Biomolecules, Department of Biochemical and Pharmaceutical Technology, University of São Paulo, 05508-000 São Paulo, Brazil; SAZ Animal Nutrition, São Paulo, Brazil
| | - Ricardo P S Oliveira
- Laboratory of Microbial Biomolecules, Department of Biochemical and Pharmaceutical Technology, University of São Paulo, 05508-000 São Paulo, Brazil.
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Al-Jaza D, Medina A, Magan N. Efficacy of sodium metabisulphite for control of Aspergillus flavus and aflatoxin B1 contamination in vitro and in chilli powder and whole red chillies. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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