5-methoxy sterigmatocystin are a chic of compounds with agnate structures, which is mainly composed of Aspergillus assorted ( Aspergillus uersicolor ) and Aspergillus nidulans ( A.nidulans ) fungi such as Aspergillus versicolor. Main abuse corn, peanuts, rice and aureate and added grains, but the abuse ambit and amount is inferior to aflatoxin. But in top alarmist blight accident breadth association absorb food, sterigmatocystin attenuated seriously; in esophageal blight top accident breadth association bistro foods are added commonly. Sterigmatocystin toxicity is not strong, the mice articulate LD50 800mg/ kg weight above. Sterigmatocystin abiding toxicity mainly for the alarmist and branch toxicity, but the amount has able carcinogenicity. In 0.15 ～2.25mg/ dosage agriculture rats for 42 weeks, 78% of the rats with primary hepatocellular carcinoma, and accept an accessible dose-effect relationship. The actuality in the Ames agreement aswell shows able mutagenicity.
5-methoxy sterigmatocystin is a baneful metabolite structurally carefully accompanying to the aflatoxins ( analyze accepted actuality area amount 2 ), and consists of a xanthone basis absorbed to a bifuran structure. Sterigmatocystin is mainly produced by the fungi Aspergillus nidulans and A. versicolor. It has been appear in mouldy grain, blooming coffee beans and cheese although advice on its accident in foods is limited. It appears to action abundant beneath frequently than the aflatoxins, although analytic methods for its assurance accept not been as acute until recently, and so it is accessible that baby concentrations in aliment bolt may not consistently accept been detected. Although it is a almighty alarmist carcinogen agnate to aflatoxin B1, accepted ability suggests that it is boilerplate abreast as boundless in its occurrence.
From: Best Probiotics