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download between 0-24 hoursReleased: 2017
ISO 19563:2017
ISO 19563:2017-Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
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| Standard´s number: | ISO 19563:2017 |
| Pages: | 13 |
| Edition: | 1 |
| Released: | 2017 |
| Language: | English |
DESCRIPTION
ISO 19563:2017
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.