African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Inhibition of aflatoxin-producing aspergilli by lactic acid bacteria isolates from indigenously fermented cereal gruels

A. A. Onilude*, O. E. Fagade, M. M. Bello and I. F. Fadahunsi
Microbial Physiology and Biotechnology Research, Department of Botany and Microbiology, University of Ibadan, Ibadan, NIGERIA.
Email: [email protected]

  •  Accepted: 22 August 2005
  •  Published: 31 December 2005

Abstract

A total of six lactic acid bacteria (LAB) isolates were selected from five indigenously fermented cereal gruels and identified as Lactobacillus fermentum OYB, Lb. fermentum RS2, Lb. plantarum MW, Lb. plantarum YO, Lb. brevis WS3, andLactococcus spp. RS3. Six aflatoxin-producing aspergilli were also selected from the various food sources. Two of the isolates, identified as Aspergillus parasiticus C2 andA. parasiticus AF7, produced both aflatoxin B1 and G while the other four identified asA. flavus M1, A. flavus B4, A flavus B5 and A. flavus C6, produced only aflatoxin B1. Each of the LAB isolates inhibited the growth of at least a toxin-producingAspergillus. The maximum inhibitions were shown by Lb. plantarum YO, which was able to inhibit the vegetative and sporulative growth of all the aflatoxin-producing aspergilli. Lactococcus spp. RS3 and Lb. brevis WS3 were only able to inhibit A. parasiticus C7 reasonably and A. flavus B5 and C6 mildly.

 

Key words: Inhibition, Lactic acid bacteria, aflatoxin-producing aspergilli.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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