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Planta Med 1991; 57(5): 430-433
DOI: 10.1055/s-2006-960142
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© Georg Thieme Verlag Stuttgart · New York

Seasonal Variations of the Flavonoid Content from Ginkgo biloba Leaves

A. Lobstein, L. Rietsch-Jako, M. Haag-Berrurier, R. Anton
  • Laboratoire de Pharmacognosie, Faculté de Pharmacie, 74 Route du Rhin, B. P. 24, F-67401 Strasbourg Cedex, France
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Publication History

1990

Publication Date:
05 January 2007 (online)

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Abstract

An HPLC method for the separation and the quantitative determination of flavonol glycosides, acylflavonol glycosides, and biflavones in crude leaf extracts from Ginkgo biloba is described. The results, expressed in percentage of rutine, kaempferol p-coumaroyl glucorhamnoside, and bilobetin showed a higher amount of acylflavonol glycosides in buds, of flavonol glycosides in spring leaves, and of biflavones in autumn leaves.

Key words

Ginkgo biloba L. - flavonol glycosides - acylflavonol glycosides - biflavones - HPLC