Indian Journal of Poultry Science

An experiment was conducted to study the aflatoxin B₁ (AFB₁) producing potential of two different strains viz. Aspergillus parasiticus MTCC 411 and Aspergillus parasiticus NRRL 2999. Using liquid medium, consisting of 2% yeast extract and 15% sucrose, Aspergillus parasiticus MTCC 411 strain produced 100 mg and Aspergillus parasiticus NRRL 2999 strain produced 110 mg AFB₁ per litre of medium. Under dark condition Aspergillus parasiticus MTCC 411 produced higher amount of AFBas compared to light condition. Higher yield of AFB₁ was reported on yeast extract-sucrose medium as compared to synthetic low salts medium. However, mycelial growth had no correlation with AFB₁ yield. It is thus, concluded that Aspergillus parasiticus MTCC 411 strain has low aflatoxigenic potential than Aspergillus parasiticus NRRL 2999 strain and the AFB₁ yield is more under dark conditions as compared to light conditions since light is deleterious to the aflatoxin formation.