Low Molecular Weight Polyphenols in Wood and Bark of <i>Eucalyptus Globulus</i>
Keywords:
Wood, bark, Eucalyptus globulus, polyphenols, flavonoids, phenolic acids, phenolic aldehydesAbstract
Polyphenols (mainly flavonoids and phenolic acids and aldehydes) were studied in wood and bark samples of Eucalyptus globulus. Gallic and ellagic acids, vanillin, syringaldehyde, sinapaldehyde, and quercetin were identified in wood; and gallic, protocatechuic, vanillic and ellagic acids, protocatechuic aldehyde, taxifolin, eriodictyol, quercetin, and naringenin in bark. Ellagitannins and some unidentified flavonols were also detected in both samples.References
Charrier, B., M. Marques, and J. Haluk. 1992. HPLC analysis of gallic and ellagic acids in European oakwood (Quercus robur L.) and eucalyptus (Eucalyptus globulus). Holzforschung 46:87-89.nConde, E., E. Cadahía, and M. C. García-Vallejo. 1992. Optimization of TLC for research on the flavonoids in wood and bark of the genus Eucalyptus L'Heritier. Chromatographia 33:418-426.nSharma, D. S., and R. K. Crowden. 1974. Anthocyanins in some Eucalyptus species. Aust. J. Bot. 22:623-627.nSingleton, V. L., and J. A. Rossi. 1965. Colorimetry of total phenolics with phosphomolybdic-phosphotungstic acid reagents. Am. J. Enol. Vitic. 16:144-158.nYazaki, Y., and W. E. Hillis. 1976. Polyphenols of Eucalyptus globulus, E. regnans and E. deglupta. Phytochemistry 15:199-206.n
