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Background
Current Analytical Techniques
For past years, many analytical techniques have
been used in tea components analysis including
1. Chromatographic methods‐HPLC‐UV, HPLC‐MS,
GC, GC MS and HPTLC
2. Spectroscopic methods‐NMR and NIR.
Background
Challenges
1. Multiple methods may needed because of the
analytes properties (e.g.Catechins and
theanine) ;
2. Special processing and extraction methods
may needed because the contents of analytes
in the target products (from micro grams to
grams);
3. The availability of quantitative standards.