PMID: Biosci Biotechnol Biochem. 2003 Feb ;67(2):445-7. PMID: 12729019 Abstract Title: 6-hydroxyflavonoids as alpha-glucosidase inhibitors from marjoram (Origanum majorana) leaves. Abstract: A methanol extract of marjoram leaves strongly inhibited rat intestinal alpha-glucosidase. Five 6-hydroxyflavonoids, 6-hydroxyapigenin (scutellarein; IC50 for sucrose hydrolysis by rat intestinal alpha-glucosidase, 12 microM), 6-hydroxyapigenin-7-O-beta-D-glucopyranoside (>500 microM), 6-hydroxyluteolin-7-O-beta-D-glucopyranoside (300 microM), 6-hydroxyapigenin-7-O-(6-O-feruloyl)-beta-D-glucopyranoside (>500 microM), …
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