NEN-ISO 19563
Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
active, Most Current
| Organization: | NEN |
| Publication Date: | 1 February 2017 |
| Status: | active |
| Page Count: | 23 |
| ICS Code (Tea): | 67.140.10 |
scope:
NEN-ISO 19563 specifies a high-performance liquid chromatographic (HPLC) method for the determination of theanine content in tea (Camellia sinensis). It is applicable to both tea and instant tea samples. Separation of L- and D-theanine is not possible using this method; however, the L-enantiomer is the major form in tea.
Document History
NEN-ISO 19563
February 1, 2017
Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
NEN-ISO 19563 specifies a high-performance liquid chromatographic (HPLC) method for the determination of theanine content in tea (Camellia sinensis). It is applicable to both tea and instant tea...