アフリカ産食用葉，ノゲイトウに含まれる化粧品・美白作用物質

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[Synopsis] Sierra Leone is a country located in the Middle West of Africa, where people enjoy longevity. It is interesting, therefore, to know what may be the cause of their long lives. Assuming that their foods may be related to the longevity, we started to investigate the constituents in the leaves of Celosia argentea L., which is used for diet in the country. Celosia argentea L. grows in the torrid zone of Africa by origin, and is also found in a warm place of the westward of Japan. Some terpenoids and saponins in the roots, and flavonoids in the leaves and stems have been implicated as active constituents in Celosia argentea L.. Here we describe an investigation of functional molecules in the leaves of African Celosia argentea L., and their effect on the skin depigmentation. Six compounds were isolated from the leaves of Celosia argentea L. and their structures were determined based on UV, MS, ^1H-NMR and ^<13>C-NMR spectroscopic data as 1-(4-O-β-glucopyranosyl-3-methoxyphenyl) propan-2-ene (citrusin C, 1), 3-O-β-glucopyranosyl-1H- indole (indican, 2), (3Z)-hexenyl-1-O-(6-O-α-rhamnopyranosyl- β-glucopyranoside) (3), (3Z)-hexenyl- 1-O-β-glucopyranoside (4), (7E)-6,9-dihydromegastigma-7-ene-3-one-9-O-β-glucopyranoside (5), and trans- ferulic acid (6). Among them, compound 1 (citrusin. C) showed good skin depigmentation effect. The presence of compounds 1-6 in the leaves of Celosia argentea L. is reported here for the first time.
近畿大学農学総合研究所の論文
2001-03-00

アフリカ産食用葉，ノゲイトウに含まれる化粧品・美白作用物質

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