标准摘要
[中文适用范围]： 本文件规定了一种高效液相色谱（HPLC）法，用于测定茶叶（Camellia sinensis）中的茶氨酸含量。该方法适用于茶叶和速溶茶样品。该方法无法分离L-和D-茶氨酸；然而，L-对映体是茶叶中的主要存在形式。 [外文原描述]： 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.
英文名称Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography