Bioremediation of Aflatoxin B1 by Meyerozyma guilliermondii AF01 in Peanut Meal via Solid-State Fermentation

The use of microorganisms to manage aflatoxin contamination is a gentle and effective approach. The aim of this study was to test the removal of AFB1 from AFB1-contaminated peanut meal by a strain of Meyerozyma guilliermondii AF01 screened by the authors and to optimize the conditions of the biocont...

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Bibliographic Details
Published in:Toxins 2024-07, Vol.16 (7), p.305
Main Authors: Zhang, Wan, Sun, Changpo, Wang, Wei, Zhang, Zhongjie
Format: Article
Language:English
Subjects:
Adaptability
Adsorption
Aflatoxin B1
Aflatoxins
Biological control
Bioremediation
Bread
Chemical bonds
Detoxification
Fermentation
fermentation bags
Inoculum
Legumes
Meyerozyma guilliermondii
Microorganisms
nutrient composition
Optimization
Peanuts
Proteins
Ratios
Regression models
response surface methodology
shallow pans
single factor
Solid state
Solid state fermentation
Temperature
Toxicity
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Summary:The use of microorganisms to manage aflatoxin contamination is a gentle and effective approach. The aim of this study was to test the removal of AFB1 from AFB1-contaminated peanut meal by a strain of Meyerozyma guilliermondii AF01 screened by the authors and to optimize the conditions of the biocontrol. A regression model with the removal ratio of AFB1 as the response value was established by means of single-factor and response surface experiments. It was determined that the optimal conditions for the removal of AFB1 from peanut meal by AF01 were 75 h at 29 °C under the natural pH, with an inoculum of 5.5%; the removal ratio of AFB1 reached 69.31%. The results of simulating solid-state fermentation in production using shallow pans and fermentation bags showed that the removal ratio of AFB1 was 68.85% and 70.31% in the scaled-up experiments, respectively. This indicated that AF01 had strong adaptability to the environment with facultative anaerobic fermentation detoxification ability. The removal ratio of AFB1 showed a positive correlation with the growth of AF01, and there were no significant changes in the appearance and quality of the peanut meal after fermentation. This indicated that AF01 had the potential to be used in practical production.
ISSN:2072-6651
2072-6651
DOI:10.3390/toxins16070305