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Planta Med 1972; 21(3): 246-253
DOI: 10.1055/s-0028-1099548
© Georg Thieme Verlag Stuttgart · New York

TANNINS AND POLYPHENOLICS OF THE GALLS OF TAMARIX APHYLLA – Part I

M. S. Ishak, H. I. El Sissi, M. A. M. Nawwar, A. E. A. El Sherbieny
  • National Research Centre, Dokki, Cairo, Egypt
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Publikationsdatum:
14. Januar 2009 (online)

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TANNINS AND POLYPHENOLICS OF THE GALLS OF TAMARIX APHYLLA– Part IIPlanta Med 1972; 21(04): 374-381
DOI: 10.1055/s-0028-1099567

Abstract

Tamarix aphylla galls containing 47.94 % tannins, belonging mainly to the hydrolysable class were subjected to both qualitative and quantitative tannin analyses. The free–resinous ground meal was successively extracted with ethyl acetate, methanol and water.

Free and combined sugars were separated and identified. The ether–soluble fraction of the ethyl acetate extract, subjected to adsorption column chromatography, proved to contain gallic acid, ellagic acid, dehydrodigallic acid, and dihydrojuglone–5–glucoside, together with other polyphenolic components.