Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
NORM herausgegeben am 10.1.2017
Bezeichnung normen: ISO 19563:2017
Ausgabedatum normen: 10.1.2017
Zahl der Seiten: 13
Gewicht ca.: 39 g (0.09 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: ISO 19563:2016 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.