Active standard | Published: 16/03/2005

ISO 14502-2:2005

Determination of substances characteristic of green and black tea — Part 2: Content of catechins in green tea — Method using high-performance liquid chromatography
(Détermination des substances caractéristiques du thé vert et du thé noir — Partie 2: Dosage des catechins dans le thé vert — Méthode par chromatographie en phase liquide a haute performance)

Available languages: English

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Detail information

Designation: ISO 14502-2:2005

Publication date: 16/03/2005

Pages: 23

Country: International technical standard

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Anotation

Description / Abstract: ISO 14502-2:2005 specifies a high-performance liquid chromatographic (HPLC) method for the determination of the total catechin content of tea from the summation of the individual catechins. It is applicable to both leaf and instant green tea, and with precision limitations to black tea. Gallic acid and caffeine can also be determined by this method, as can theogallin and theaflavins.

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