| 摘要 |
PROBLEM TO BE SOLVED: To provide a naturally occurring substance-derived IV type collagen production promoter, laminin 5 production promoter, anti-aging agent and cosmetic for the skin. SOLUTION: These contain a flavonoid or a flavonoid glucoside expressed by formula (I) as an effective ingredient. In the formula, R<SB>1</SB>and R<SB>2</SB>are each one of (a)-(c). Rha is a rhamnose residue. Glc is a glucose residue. (a): When R<SB>1</SB>is a hydrogen atom, R<SB>2</SB>is a hydrogen atom or an Rha. (b): When R<SB>1</SB>is an Rha, R<SB>2</SB>is a hydrogen atom. (c): When R<SB>1</SB>is an Rha<SP>4</SP>Glc, R<SB>2</SB>is an Rha. COPYRIGHT: (C)2007,JPO&INPIT
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