Another phenolic constituent is tea, theogallin, accounts for approximately1 percent of the dry weight of the leaf. Chlorogenic acid, also a phenolic compound, is a minor constituent in tea.

• 茶叶中另一酚类组分是3-邻-没食子酰奎尼酸，它约占茶叶干重的1%25同属酚类化合物的绿原酸在茶叶中是次要成分。