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

This standard was last reviewed and confirmed in 2020. Therefore this version remains current.

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.

General information

Status
: Published

Publication date
: 2005-03
Edition
: 1

Number of pages
: 23
Technical Committee
: ISO/TC 34/SC 8 Tea
ICS
:
67.140.10 Tea

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	Format	Language
std 1 124	PDF
std 2 124	Paper

CHF124

Life cycle

Now

Published

ISO 14502-2:2005

A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
Corrigenda / Amendments

Published

ISO 14502-2:2005/Cor 1:2006

This standard contributes to the following Sustainable Development Goals

Reduced Inequalities

Responsible Consumption and Production

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