Green Tea Extract (Green Tea Extract)

Chemical definition: Polyphenols  
   
Specification: Assay 
 (Tea polyphenols, By UV) 98% 95% 90% 50%
 (Catechins, By HPLC) 80% 70% 60%
 (EGCG, By HPLC) 45% 45% 40% 30%
 (Caffeine, By HPLC) 2% 1% 1%
 
Structural formula: 
  
Appearance: Light brown fine powder with characteristic odor
  
Identification: Passes all criteria tests
  
Assay method: The content of tea polyphenols is determined by UV and the content of Catechins,EGCG in the  product is determined by HPLC.