GSO ISO 19563:2021
ISO 19563:2017
Gulf Standard
Current Edition
·
Approved on
01 July 2021
Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
GSO ISO 19563:2021 Files
No files for this standard are available in the store currently.
Obtaining this standard through the store is currently unavailable.
You can acquire it directly from its source or from one of the member countries stores
GSO ISO 19563:2021 Scope
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.
Best Sellers From Food and Agriculture Sector
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
GSO 2055-1:2015
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
GSO 150-1:2013
Gulf Technical Regulation
Expiration dates for food products -Part 1 : Mandatory expiration dates
Recently Published from Food and Agriculture Sector
GSO 2787:2025
Gulf Technical Regulation
Ice Coffee
GSO 2106:2025
Gulf Technical Regulation
Infants Formula, Follow on Formula for Older Infants and Product for Young Children and Formulas for Special Medical Purposes
GSO 2725:2025
Gulf Technical Regulation
Marketing Requirements of Food directed to Children
GSO 2332:2025
Gulf Technical Regulation
Cream Analogue
Select GSO Member Stores
