Isolation of the antioxidant pyranonigrin-A from rice [Oryza sativa] mold starters used in the manufacturing process of fermented foods

Rice mold starters prepared from Aspergillus species are commonly used for the manufacture of koji in the production of oriental fermented foods. Methanol extracts of rice mold starters fermented by the Aspergillus species, A. awamori, A. kawachii, A. oryzae, A. saitoi, and A. sojae, were examined f...

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