Related Experiment Videos
Antimicrobial benzopyrans from the receptacle of sunflower
A Satoh1, H Utamura, M Ishizuka
1Department of Bioscience and Technology, School of Engineering, Hokkaido Tokai University, Japan.
Bioscience, Biotechnology, and Biochemistry
|April 1, 1996
Abstract:
The antimicrobial substances in sunflower (Helianthus annuus) were investigated. Two antifungal benzopyran derivatives, 6-acetyl-2,2-dimethyl-1,2-benzopyran (1) and 6-acetyl-7-hydroxy-2,2-dimethyl-1,2-benzopyran (2), were isolated from the ethanol extract of sunflower receptacles. The antimicrobial activities of isolated compounds 1 and 2 and their related compounds (precocenes) were evaluated by the paper disk method, using Pyricularia oryzae as the test fungus.