Reference number
ISO 14502-2:2005
© ISO 2025
International Standard
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
Edition 1
2005-03
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Published (Edition 1, 2005)
This publication was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 14502-2:2005

Language
Format
CHF 132
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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
    Stage
    : International Standard under systematic review [90.20]
  • Edition
     : 1
    Number of pages
     : 23
  • Technical Committee :
    ISO/TC 34/SC 8
    ICS :
    67.140.10 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

10
Reduced Inequalities
12
Responsible Consumption and Production

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