茶叶中的化学成分及其性质（The chemical composition and properties of tea leaves）.doc

茶叶中的化学成分及其性质（The chemical composition and properties of tea leaves） The chemical composition and properties of tea leaves China is the worlds first discovered tea and the tea, tea has a long cultural history, and the understanding of the earliest tea is based on the medicinal, since ancient times have shen nong tasted grass bouquet, in seventy-two, tea and the solution of the legend of the tea is tea (here) [1]. With the development and progress of the society, peoples use of tea is not limited to medicinal purposes, but gradually develops into drinks, and the way of drinking tea is gradually turned into boiled and Fried tea by chewing tea. With the development of science and technology, health care and medicinal function of tea has been confirmed that in recent decades, pharmacological functions of tea mechanism have been revealed gradually, people more in-depth understanding of tea, so this article from the perspective of the chemical composition of tea, medicinal and health care function to the identification of tea as a simple introduction, hope that readers can more in-depth understanding of the tea. Tea is a kind of beverage that is processed by tea leaves, and is a [2] of Camellia. From the tea extract has more than 600 kinds of compounds, the main organic compounds such as: tea polyphenols, amino acids, tea polysaccharide, vitamin, saponin, etc., inorganic substances such as: a variety of minerals, such as phosphorus, potassium, sulfur, magnesium, etc. [3]. These ingredients have many aspects of pharmacology, physiological regulation and nutrition health function of the human body, and the main material components are as follows: I. organic compounds 1. Tea polyphenols Tea polyphenols is extracted from the tea of a kind of natural polyphenols compounds, accounts for about 25% of the dry weight of the tea, is the floorboard of the more than 30 kinds of phenolic compounds in tea, has a very wide medicinal value, is the main medicinal ingredients of tea. Tea po