Reference number
ISO 19563:2017
© ISO 2025
International Standard
ISO 19563:2017
Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
Edition 1
2017-01
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Published (Edition 1, 2017)
This publication was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 19563:2017

Language
Format
CHF 98
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Abstract

ISO 19563:2016 specifies a high-performance liquid chromatographic (HPLC) method for the determination of theanine content in tea (Camellia sinensis). It is applicable to both tea and instant tea samples. Separation of L- and D-theanine is not possible using this method; however, the L-enantiomer is the major form in tea.

General information

  • Status
     : Published
    Publication date
     : 2017-01
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 13
  • 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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