A mutant strain of Aspergillus parasiticus lost its aflatoxin producing ability but produced four yellow pigments. The major one represented 0.13% of the mycelial mass and was identified as versicolorin A by comparison of its physical and chemical properties with those reported for an authentic compound. A trihydroxyanthraquinone, versicolorin A contains the unique difurano group present in aflatoxins and has been proposed as an intermediate in the biosynthesis of these compounds. The isolation and identification of the pigment from mutant A. parasiticus corroborate this theory.
All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences(all)