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Any fungus of the genus Aspergillus in the order Eurotiales (phylum Ascomycota). A. niger causes black mold on some foods; A. niger, A. flavus, and A. fumigatus cause aspergillosis in humans. A. oryzae is used to ferment sake and A. wentii to process soybeans.
This entry comes from Encyclopædia Britannica Concise. For the full entry on Aspergillus, visit Britannica.com.
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