GB/T 23193-2008
Determination of theanine in tea.High performance liquid chromatography (English Version)

Standard No.

GB/T 23193-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2018-05

Replace By

GB/T 23193-2017

Latest

GB/T 23193-2017

Scope

This standard specifies the method for the determination of theanine content in tea leaves by high performance liquid chromatography. This standard applies to the determination of theanine in tea. The detection limit of this standard is 5.0 mg/kg.

GB/T 23193-2008 Referenced Document

• GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
• GB/T 8302 Tea.Sampling*， 2013-12-31 Update
• GB/T 8303-2002 Tea--Preparation of ground sample and determinaton of dry matter content

GB/T 23193-2008 history

• 2017 GB/T 23193-2017 Determination of theanine in tea—Uusing high performance liquid chromatography
• 2008 GB/T 23193-2008 Determination of theanine in tea.High performance liquid chromatography