OS GSO ISO 14502-2:2008
ISO 14502-2:2005
Omani Standard
Current Edition
·
Approved on
03 September 2008
Determination of substances characteristic of green and black tea- part2: content of catechins in green tea - Method using High-performance liquid chromatography
OS GSO ISO 14502-2:2008 Files
English
23 Pages
Current Edition
Reference Language
OMR
62.43
OS GSO ISO 14502-2:2008 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.
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