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ISO 14502-2:2005

ISO 14502-2:2005

Current

Current

The latest, up-to-date edition.

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

Amended by

ISO 14502-2:2005/Cor 1:2006

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Published date

03-16-2005

Publisher

International Organization for Standardization

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.

DevelopmentNote
Supersedes ISO/DIS 14502-2 (03/2005)
DocumentType
Standard
Pages
23
PublisherName
International Organization for Standardization
Status
Current

BS ISO 11287:2011 Green tea. Definition and basic requirements
ISO 11287:2011 Green tea Definition and basic requirements

ISO 7516:1984 Instant tea in solid form Sampling
ISO 1839:1980 Tea — Sampling
ISO 7513:1990 Instant tea in solid form Determination of moisture content (loss in mass at 103 degrees C)
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
ISO 1572:1980 Tea Preparation of ground sample of known dry matter content

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Hardcopy - English
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