请输入您要查询的英文单词:

 

单词 terpene
释义

terpene

/ˈtəːpiːn /
noun Chemistry
Any of a large group of volatile unsaturated hydrocarbons found in the essential oils of plants, especially conifers and citrus trees. They are based on a cyclic molecule having the formula C10H16.Lactones, phenolic aldehydes (such as vanillin), terpenes (essential oils) and wood tannins are all by-products of oak, so it is understandable that too much can rob a white wine of its fruit and delicacy....
  • In woody plants, carbon-based chemical compounds such as phenolics and terpenes comprise the main chemical defence.
  • Essential oils contain many terpenes, which are rapidly absorbed through the lungs and cross the blood-brain barrier.

Origin

Late 19th century: from German Terpentin 'turpentine' + -ene.

随便看

 

英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/11/12 9:31:53