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
- Standard No.
- ISO 14502-2:2005
- Release Date
- 2005
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 14502-2:2005/Cor 1:2006
- Latest
- ISO 14502-2:2005/Cor 1:2006
- Scope
- This part of ISO 14502 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 (see Annex A). Gallic acid and caffeine can also be determined by this method, as can theogallin and theaflavins.
ISO 14502-2:2005 history
- 2006 ISO 14502-2:2005/Cor 1:2006 Determination of substances characteristic of green and black tea - Part 2: Content of catechins in green tea - Method using high-performance liquid chromatography; Technical Corrigendum 1
- 2005 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
