Potential Application of Lactic Acid Bacteria to Reduce Aflatoxin B1 and Fumonisin B1 Occurrence on Corn Kernels and Corn Ears

Fungal spoilage is an important issue for the food industry, leading to food sensory defects, food waste, economic losses and public health concern through the production of mycotoxins. Concomitantly, the search for safer natural products has gained importance since consumers began to look for less...

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Bibliographic Details
Published in:Toxins 2019-12, Vol.12 (1), p.21
Main Authors: Nazareth, Tiago de Melo, Luz, Carlos, Torrijos, Raquel, Quiles, Juan Manuel, Luciano, Fernando Bittencourt, Mañes, Jordi, Meca, Giuseppe
Format: Article
Language:English
Subjects:
Aflatoxin B1
Aflatoxins
Anaerobic conditions
Antifungal activity
Bacteria
Biological control
biopreservation
Chemical treatment
Corn
Economic impact
Employment
Environmental conditions
Feeds
Food
Food contamination & poisoning
Food industry
Food waste
Fruits
Fumonisin B1
Fungi
Fungicides
Immune system
Kernels
Lactic acid
Lactic acid bacteria
lactobacillus plantarum
Metabolites
Minimum inhibitory concentration
Mycotoxins
Natural products
Public health
Reagents
Spoilage
Strains (organisms)
Vegetables
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Summary:Fungal spoilage is an important issue for the food industry, leading to food sensory defects, food waste, economic losses and public health concern through the production of mycotoxins. Concomitantly, the search for safer natural products has gained importance since consumers began to look for less processed and chemically treated foods. In this context, the aim of this study was to evaluate the antifungal and antimycotoxigenic effect of seven strains of Lactobacillus plantarum. Lactic acid bacteria (LAB) were grown on Man Rogosa Sharpe (MRS) broth at 37 °C in anaerobic conditions. After that, the cell-free supernatant (CFS) were recovered to determine its antifungal activity by halo diffusion agar test. In addition, minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) was determined for each L. plantarum CFS by 96-well microplates method. Additionally, CFS was used as a natural biocontrol agent on corn kernels and corn ears contaminated with Aspergillus flavus and Fusarium verticillioides, respectively. The L. plantarum CECT 749 CFS showed the highest antifungal effect against all essayed strains. Moreover, the employment of this CFS in food reduced the mycotoxin production at a percentage ranging from 73.7 to 99.7%. These results suggest that the L. plantarum CECT 749 CFS could be promising for the biocontrol of corn.
ISSN:2072-6651
2072-6651
DOI:10.3390/toxins12010021