An Overview of Condensed Tannin Structure
The proanthocyanidins are an important class of natural products forming the basis for various classes of flavonoid polymers such as the condensed tannins, phlobaphenes, and phenolic acids. Refining our understanding of the structure of polyflavonoids will lead to a better appreciation of their properties and help in developing their use as a renewable source of commodity and specialty chemicals. Considerable progress has already been made in the last two decades, but more information is needed on structural elaborations during, and particularly after, their biosynthesis. Armed with further information on the structure of polyflavonoids, we should be able to understand better their interactions with other biopolymers and hence their biological significance.
KeywordsNatural Product Condensed Tannin Wood Preservative Specialty Chemical Decay Resistance
Unable to display preview. Download preview PDF.
- 1.Gottlieb, O.R. Evolution of natural products. In:Rowe, J.W. (ed.) Natural Products Extraneous to the Lignocellulosic Cell Wall of Woody Plants. Springer-Verlag, Chapter 2 (in press).Google Scholar
- 3.Mix, J. Dursban TC again named top termiticide. Pest Control, February, 56 (1989).Google Scholar
- 4.Mix, J. Termiticide market stabilizes. Pest Control, February, 22 (1987).Google Scholar
- 6.Laks, P.E. Wood preservation as trees do it. Proceedings of the American Wood Preservers’ Association, Minneapolis: 147 (1988).Google Scholar
- 7.Laks, P.E.; Putman, L.J.; Pruner, M.S. Natural products as wood preservatives. Proceedings of the Canadian Wood Preservation Association, Toronto, 1988 (in press).Google Scholar
- 8.Schmidt, E.L.; Lotz, W.R. Tropical wood extracts as preservatives for southern pine. Proceedings of the American Wood Preservers’ Association, Minneapolis: 173 (1988).Google Scholar
- 10.Porter, L.J. Condensed tannins. In:Rowe, J.W. (ed.) Natural Products Extraneous to the Lignocellulosic Cell Wall of Woody Plants. Springer-Verlag, Chapter 6.7 (in press).Google Scholar
- 11.Porter, L.J. Flavans and proanthocyaniclins. In: Harborne, J.B. (ed.) The Flavonoids, Advances in Research since 1980. Chapman and Hall, pp. 21–62 (1988).Google Scholar
- 12.Barober, R.K.; Fukazawa, K. Sapwood and heartwood: a review. For. Prod. Abstr. 8 (9): 265 (1985).Google Scholar
- 13.Kodera, M.; Tanahashi, M.; Higuchi, T. Dehydrogenative co-polymerization of d-catechin and coniferyl alcohol. Wood Res. 65: 1 (1979).Google Scholar
- 14.Harborne, J.B. The Flavonoids, Advances in Research Since 1980. Chapman and Hall, pp. 539–596 (1988).Google Scholar