Efficacy of corn and rice seed-borne mycoflora in controlling aflatoxigenic Aspergillus flavus
Kamel Madbouly Ramadan, Adel; Mosaad A. Abdel-Wahhab; Mohamed I.M. Ibrahim;
Abstract
Food commodities such as cereals are subjected to spoilage and bio-deterioration during storage
by mycotoxigenic fungi such as Aspergillus flavus. Efforts are done to biologically control toxigenic
A. flavus and subsequently prevent or at least minimize its aflatoxin production ability, without the
need of using synthetic fungicides. Antifungal activity of corn and rice seed-borne mycoflora was
tested against aflatoxigenic A. flavus in vitro, using bioassays such as dual culture technique; ability
to produce volatile and non-volatile metabolites; ability to inhibit germination and reduce germ
tube length of A. flavus conidia; in vivo reduction of aflatoxins level in corn seeds co-inoculated with
the pathogen and antagonists. Penicillum crustosum, Aspergillus giganteus, Fusarium verticillioides
and Aspergillus fumigatus isolates showed promising antifungal activities and varying efficiencies
of reducing aflatoxins level; however, only A. fumigatus isolate was non-aflatoxigenic. It could be
concluded that A. fumigatus could be used effectively as a biopreservative to increase shelf life of
cereals during storage, but after testing its tendency to produce other mycotoxins or causing human
Aspergillosis.
by mycotoxigenic fungi such as Aspergillus flavus. Efforts are done to biologically control toxigenic
A. flavus and subsequently prevent or at least minimize its aflatoxin production ability, without the
need of using synthetic fungicides. Antifungal activity of corn and rice seed-borne mycoflora was
tested against aflatoxigenic A. flavus in vitro, using bioassays such as dual culture technique; ability
to produce volatile and non-volatile metabolites; ability to inhibit germination and reduce germ
tube length of A. flavus conidia; in vivo reduction of aflatoxins level in corn seeds co-inoculated with
the pathogen and antagonists. Penicillum crustosum, Aspergillus giganteus, Fusarium verticillioides
and Aspergillus fumigatus isolates showed promising antifungal activities and varying efficiencies
of reducing aflatoxins level; however, only A. fumigatus isolate was non-aflatoxigenic. It could be
concluded that A. fumigatus could be used effectively as a biopreservative to increase shelf life of
cereals during storage, but after testing its tendency to produce other mycotoxins or causing human
Aspergillosis.
Other data
Title | Efficacy of corn and rice seed-borne mycoflora in controlling aflatoxigenic Aspergillus flavus | Authors | Kamel Madbouly Ramadan, Adel ; Mosaad A. Abdel-Wahhab; Mohamed I.M. Ibrahim | Keywords | Biocontrol, cereals, mycoflora, Aspergillus flavus, aflatoxins, biopreservativ | Issue Date | 2014 | Publisher | www.ufpi.br/comunicata | Source | 2 | Journal | Comunicata Scientiae | Volume | 5 | Issue | 2 | Start page | 118 | End page | 130 |
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