ISO-14502-2 › Determination of substances characteristic of green and black tea - Part 2: Content of catechins in green tea - Method using high-performance liquid chromatography

ISO-14502-2 - 1ST EDITION - CURRENT


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 1ST EDITION - March 1, 2005
 1ST EDITION CORRIGENDUM 1 - April 1, 2006

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.

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67.140.10 (Tea Including herb teas)

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Document Number

ISO 14502-2:2005

Revision Level

1ST EDITION

Status

Current

Publication Date

March 1, 2005

Committee Number

ISO/TC 34/SC 8