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Determination of substances characteristic of green and black tea — Part 1: Content of total polyphenols in t…

Overview ISO 14502-1:2005 defines a validated colorimetric method using Folin‑Ciocalteu reagent for the determination of the total polyphenol content in green and black teas, including leaf teas and…

Determination of substances characteristic of green and black tea. Content of total polyphenols in tea. Color…