The chemical composition of tea is composed of 3.5-7% inorganic matter and 93-96.5% organic matter. There are about 27 kinds of inorganic mineral elements in tea, including phosphorus, potassium, sulfur, magnesium, manganese, fluorine, aluminum, calcium, sodium, iron, copper, zinc, selenium, etc. The organic compounds in tea mainly include protein, lipid, carbohydrate, amino acid, alkaloid, tea polyphenol, organic acid, pigment, aroma component, vitamin, saponin, sterol, etc.
