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- W4240541374 abstract "In this chapter, a brief introduction about tea is provided. Most of the cultivated tea in the world is highly heterogeneous as a result of the large–scale dispersal of the tea plant during the long history of its cultivation, its outbreeding nature, and the free hybridization between geographical races. Free–growing tea will attain a height of about 9m, but in commercial tea cultivation the tea bush is maintained at a height of 1–1.5m by regular pruning. The pruning frequency varies from 3 to 6 years in different tea-producing countries. The frequency of plucking is dependent on climatic and other factors affecting regeneration of the flush, but is generally at intervals of 6 to 9 days. Analysis of the unsaponifiable fraction of extracts of different segments of the tea bush showed that a–spinasterol, a–spinasterol glycoside, and P–amyrin occurred in root and stem segments as well as in leaves; oleanolic acid was detected only in the aerial portion of the bush, with epifriedelinol and friedelin being confined to the brown portion of the stem. Black, green, and instant teas together with smaller amounts of oolong and paochong tea are the only products obtained from the tea bush, and, at the present time, none of the other products obtainable is being exploited on even a small scale. A list of these potential by–products has been compiled and it is possible that some of them may become useful in the future." @default.
- W4240541374 created "2022-05-12" @default.
- W4240541374 creator A5084147885 @default.
- W4240541374 date "1978-01-01" @default.
- W4240541374 modified "2023-10-14" @default.
- W4240541374 title "Tea" @default.
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