LOW-MOLECULAR-WEIGHT POLYPHENOLS IN LEAVES OF EUCALYPTUS-CAMALDULENSIS, EUCALYPTUS-GLOBULUS AND E-RUDIS

Ether soluble polyphenols from leaves of Eucalyptus camaldulensis, E. globulus and E. rudis have been studied. The phenolic aldehyde vanilli n, the phenolic acids gallic, protocatechuic and ellagic acids, some f lavonol glycosides (rutin, quercetin-3-arabinoside, quercetin-3,7-dirh amnoside, quercitrin, kaempferol-3-arabinoside and their aglycones), o ne flavanone (naringenin) and two flavones (luteolin and apigenin) wer e Identified and quantified, Some ellagitannins, flavonols and flavano nes were recognized according to their ultra-violet spectra. E. camald ulensis and E. rudis showed the highest concentrations and varieties o f flavonol glycosides, whilst E. globulus was characterized by high co ncentrations of ellagitannins. (C) 1997 by John Wiley & Sons, Ltd.