This standard applies to the determination of the total amount of free amino acids in tea. Organic acids with α-amino groups in tea water extracts that exist in a free state are called tea free amino acids.
GB/T 8314-1987 history
2013GB/T 8314-2013 Tea.Determination of free amino acids content
2002GB/T 8314-2002 Tea--Determination of free amino acids content
1987GB/T 8314-1987 Determination of Total Free Amino Acids in Tea