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

Publication date: Mar 16, 2005

General information

Current stage: 90.20 Effective date: Apr 15, 2025

Originator: ISO

Owner: ISO/TC 34/SC 8

Type: International Standard

ICS: 67.140.10

Languages: English

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Status: Published

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 14502-2:2005
90.20 Standard under periodical review
Apr 15, 2025

CORRIGENDA / AMENDMENTS

PUBLISHED
ISO 14502-2:2005/Cor 1:2006

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