Summary
From prehistoric periods, mankind used tree exudates and extractives of various woods and barks and these were at times of major commercial importance. Only amber, tannins, oleoresins and rubber continue to be significant. The study of exudates and extractives has provided a major part of the foundations of organic chemistry and aspects of plant biochemistry such as biosynthesis and chemotaxonomy. The polyphenols in the Eucalyptus genus and those formed in different tissues of the tree stem illustrate the alternative pathways existing in the cells and the complexity of biosynthesis. Basic studies have provided understanding of means of alleviating numerous problems encountered in the industrial use of wood. Attension is drawn to the continuum of development and the contribution of many disciplines. Future studies will be mainly concerned with the control of the formation of secondary components in plantation species, the improvement of quality standards of products and the collection of basic data relevant to biotechnology and other fields. Developments will be dependant on the support of those who are not professional workers in the field.
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The Academy Lecture presented on 24 April, 1985 at Pretoria, South Africa to Fellows of the International Academy of Wood Science and participants of the Symposium ‘Forest Products Research International — Achievements and the Future’. The Lecture was illustrated with many coloured slides and is condensed in this publication. Reprints of the unabridged version are available from the author
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Hillis, D.W.E. Forever amber a story of the secondary wood components. Wood Sci.Technol. 20, 203–227 (1986). https://doi.org/10.1007/BF00350978
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DOI: https://doi.org/10.1007/BF00350978