Sterigmatocystin (SMC) is a mycotoxin with a very similar structure to AFB1. Sterigmatocystin is produced by more than 50 types of fungus, including the Aspergillus fungus species. Being a biogenic precursor of AFB1, both SMC and AFB1 possess a similar structure consisting of a xanthone nucleus attached with a bifuran. https://www.creative-diagnosti....cs.com/food-analysis