ORAC and DPPH assay comparison to assess antioxidant capacity of tea infusions: Relationship between total polyphenol and individual catechin content

  title={ORAC and DPPH assay comparison to assess antioxidant capacity of tea infusions: Relationship between total polyphenol and individual catechin content},
  author={Molay Kumar Roy and M. Koide and Theertham Pradyumna Rao and Tsutomu Ōkubo and Yutaka Ogasawara and Lekh Raj Juneja},
  journal={International Journal of Food Sciences and Nutrition},
  pages={109 - 124}
  • M. Roy, M. Koide, +3 authors L. Juneja
  • Published 15 February 2010
  • Medicine, Chemistry
  • International Journal of Food Sciences and Nutrition
Abstract Commercially available tea infusions are the major source of catechins for preparing bottled tea beverages and tea supplements available in the market today. In the present study, we analyzed five tea infusions to measure the total antioxidant capacity (TAC) by oxygen radical absorbance capacity (ORAC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (DRSC) assays, total polyphenol content by the colorimetric method and individual catechin content by high… 
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