ISOLATION OF LACTIC ACID BACTERIA FROM TRADITIONAL MOROCCAN PRODUCTS AND EVALUATION OF THEIR ANTIFUNGAL ACTIVITY ON GROWTH AND OCHRATOXIN A PRODUCTION BY ASPERGILLUS CARBONARIUS AND A. NIGER

Authors

  • YOUSRA EL HAMMOUDI Laboratory of Biotechnology, Environment, Agri-food and Health, Faculty of Science Dhar Mahraz, Sidi Mohamed Ben Abdallah University, P.B. 1796 Atlas Fez, Morocco.
  • Adil LAAZIZ Laboratory of Biotechnology, Environment, Agri-food and Health, Faculty of Science Dhar Mahraz, Sidi Mohamed Ben Abdallah University, P.B. 1796 Atlas Fez, Morocco.
  • Amina BOUSETA Laboratory of Biotechnology, Environment, Agri-food and Health, Faculty of Science Dhar Mahraz, Sidi Mohamed Ben Abdallah University, P.B. 1796 Atlas Fez, Morocco.
  • Rajae BELKHOU Laboratory of Bio-industry and Agro-food Technology, Higher School of Technology Fez, University Sidi Mohamed Ben Abdallah, Route d'Imouzzer, B.P: 2427 - Fez, Morocco.

DOI:

https://doi.org/10.15414/jmbfs.3634

Keywords:

Antifungal activity, lactic acid bacteria, Aspergillus carbonarius, A. niger, ochratoxin A.

Abstract

Different agricultural products, including grapes, are susceptible to contamination and damage by several microorganisms, one being fungi and their mycotoxins such as ochratoxin A. These alterations are a source of food waste and lead to significant economic losses. Thus, new alternatives have been sought in parallel with existing methods. In this work, after isolation, identification by 16S rDNA sequencing and differentiation by Pulsed-Field Gel Electrophoresis (PFGE) of four lactic acid bacteria from different traditional Moroccan food products, antifungal activity was studied against Aspergillus carbonarius and A. niger isolated from Moroccan grapes. Their effect on ochratoxin A production was also assessed. A strain of Lactoccocus lactis ssp. lactis (F) and three strains of Leuconostoc mesenteroides ssp. mesenteroides (I, C, and D) selected from 16 isolated strains were tested. Their antifungal activities against Aspergillus spp. were quite significant, with growth inhibition rates ranging from 28.69% to 53.31%. Likewise, ochratoxin A production by Aspergillus strains was significantly reduced. Indeed, in the presence of the Lactoccocus lactis ssp. lactis (F) strain, this reduction was about 63.90% and 65.12% for A. niger and A. carbonarius, respectively; however, an 89.38% reduction for A. niger and 19.35 % A. carbonarius was achieved for the Leuconostoc mesenteroides ssp. mesenteroides (I) strain. These results revealed strain-dependent antifungal activity. Our study indicates that the use of these lactic acid bacteria can be applied as a biocontrol of fungal growth and mycotoxins production.

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Published

2021-08-01

How to Cite

EL HAMMOUDI, Y., LAAZIZ, A., BOUSETA, A., & BELKHOU, R. (2021). ISOLATION OF LACTIC ACID BACTERIA FROM TRADITIONAL MOROCCAN PRODUCTS AND EVALUATION OF THEIR ANTIFUNGAL ACTIVITY ON GROWTH AND OCHRATOXIN A PRODUCTION BY ASPERGILLUS CARBONARIUS AND A. NIGER. Journal of Microbiology, Biotechnology and Food Sciences, 11(1), e3634. https://doi.org/10.15414/jmbfs.3634
Received 2020-08-25
Accepted 2021-01-20
Online Published 2021-08-01