Titlebook: Natural Products of Woody Plants; Chemicals Extraneous John W. Rowe Book 1989 Springer-Verlag Berlin Heidelberg 1989 Oligosaccharid.Woody p

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PHON

1431-8563 lution through the Bronze and Iron Ages up to our present technologically advanced society has hardly diminished the importance of wood. Today, its role as a source of paper products, furniture, building materials, and fuel is still of major significance. Wood consists of a mixture of polymers, ofte

摘要

胶水

Natural Products Chemistry — Past and Futurea can be traced back thousands of years. Traditional natural products chemistry necessarily started with the isolation and purification of a compound, followed by structure determination, and culminated in partial or total synthesis.

Pamphlet

Carbohydratesis carbohydrate, most of which is in cell walls (structural components). In higher land plants, these carbohydrate components of the cell wall are cellulose, the hemicelluloses, and the pectic substances. The subject of this chapter is the carbohydrates other than those that are constituents of primary or secondary cell walls.

LAP

Fats and Fatty Acidse of fats and fatty acids in woody tissue as food reserves. Also included is a short review on the lower molecular weight acids. Excluded, however, are the fatty acids in waxes, as this subject is covered in Sect. 6.4.

赞美者

Condensed Tanninsinuing fascination for scientists, and has provided much of the impetus for their study. Recent work has shown that a minor role in plants probably involves their broad-spectrum antibiotic properties (see Sect. 7.7.5) and this is also likely to involve their binding characteristics (see Sect. 7.7.2.3).

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Historical Uses of Extractives and Exudatesmaterial (24). Such resinous products could be provided by a number of sources and a few trials would reveal their effectiveness. Other materials, such as kinos or tannin extracts, when used as astringents for the treatment of diarrhea, would require a more sophisticated knowledge.

flavonoids

Complex Aliphatic and Alicyclic Extractiveslants except for cyanogenic glycosides. Cyanogenic glycosides which liberate hydrogen cyanide enzymically are important to humans and livestock, since a number of important food plants contain these toxic compounds. The function of the cyanogens can be considered as a defense substance, usually against herbivores.