Productivity of Aflatoxins and Some Biological Effects in Aspergillus flavus LINK Isolated from Cadaver of the Silkworm, Bombyx mori L.

抄録

Fifteen strains of Aspergillus flavus isolated from naturally infected cadavers and frees of the silkworm (Bombyx mori L.) showed strong pathogenicity and oral toxicity of their culture broths to the larvae, and high tolerance to formaldehyde. All strains produced aflatoxin B₁, B₂, G₁, and G₂ on a liquid medium. Also, some strains produced high yields of B₁ and G₁ on rice, and one isolate (SP₄) among them formed the highest level of B₁ (624 μg/g) and G₁ (560 μg/g). Aflatoxins were detected in living worms artificially infected with SP-4 isolate of A. flavus.