There are about 27 kinds of inorganic mineral elements in tea, including phosphorus, potassium, sulfur, magnesium, manganese, fluorine, aluminum, calcium, sodium, iron, copper, zinc and selenium.
Organic compounds:
1. enzymes: oxidoreductase, hydrolase, lyase, phosphorylase, transposase and isomerase.
2. protein and amino acids: The amino acids in tea mainly include theanine, glutamic acid, aspartic acid, asparagine, arginine, serine, alanine and group A..
Acid, threonine, glutamine, phenylalanine, glycine, valine, tyrosine, leucine and isoleucine.
3. Alkaloids: including caffeine, theobromine and alkaloids.
4. Tea polyphenols: Tea polyphenols are the general name of more than 30 polyphenols in tea, including catechins, flavonoids, anthocyanins and phenolic acids.
5. Organic acids: Most of the organic acids in tea are free organic acids, including fruit acid, citric acid, succinic acid and oxalic acid.
6. Pigments: chlorophyll, lutein, carotene, etc.