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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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發(fā)表于 2025-3-21 18:53:22 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
書目名稱Natural Products of Woody Plants
副標(biāo)題Chemicals Extraneous
編輯John W. Rowe
視頻videohttp://file.papertrans.cn/662/661910/661910.mp4
叢書名稱Springer Series in Wood Science
圖書封面Titlebook: Natural Products of Woody Plants; Chemicals Extraneous John W. Rowe Book 1989 Springer-Verlag Berlin Heidelberg 1989 Oligosaccharid.Woody p
描述Wood as found in trees and bushes was of primary importance to ancient humans in their struggle to control their environment. Subsequent evolution 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, often referred to as lignocellulose. The cellulose micro fibrils consist of an immensely strong, linear polymer of glucose. They are associated with smaller, more complex polymers composed of various sugars called hemicelluloses. These polysaccharides are embedded in an amorphous phenylpropane polymer, lignin, creating a remarkably strong com- posite structure, the lignocellulosic cell wall. Wood also contains materials that are largely extraneous to this lignocellulosic cell wall. These extracellular substances can range from less than 1070 to about 35% of the dry weight of the wood, but the usual range is 2% -10%. Among these components are the mineral constituents, salts of calcium, potassium, sodium, and other metals, particularly those present in th
出版日期Book 1989
關(guān)鍵詞Oligosaccharid; Woody plant; evolution; natural product; natural products; nitrogen; plants; protein; protei
版次1
doihttps://doi.org/10.1007/978-3-642-74075-6
isbn_softcover978-3-642-74077-0
isbn_ebook978-3-642-74075-6Series ISSN 1431-8563
issn_series 1431-8563
copyrightSpringer-Verlag Berlin Heidelberg 1989
The information of publication is updating

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沙發(fā)
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板凳
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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
地板
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5#
發(fā)表于 2025-3-22 12:28:35 | 只看該作者
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.
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發(fā)表于 2025-3-22 14:10:05 | 只看該作者
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.
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發(fā)表于 2025-3-22 17:09:33 | 只看該作者
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.
8#
發(fā)表于 2025-3-22 23:24:02 | 只看該作者
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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發(fā)表于 2025-3-23 02:39:25 | 只看該作者
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.
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發(fā)表于 2025-3-23 05:59:06 | 只看該作者
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.
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