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Antioxidant Screening of Medicinal Herbal Teas by Hernán Speisky; Claudia Rocco; Catalina Carrasco; Eduardo A. Lissi; Camilo López‐Alarcón is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Antioxidant Screening of Medicinal Herbal Teas about?

## Abstract Herbal tea consumption is deeply and widely rooted amongst South‐American populations. In view of the involvement of oxygen‐ and nitrogen‐reactive species in the ethiogenesis of several diseases, the antioxidant properties of some of the herbal teas most commonly consumed in the southern regions was assessed __in vitro__. Around one‐third of the 13 examined herbs, displayed a substantially higher ability to scavenge ABTS^+·^ radicals (TEAC assay), and to quench the pro‐oxidant species, hypochlorite (HClO) and peroxynitrite (ONOO^−^). Amongst the tested herbs, teas prepared from __Haplopappus__ __baylahuen__, __Rosa__ __moschata__ and __Peumus__ __boldus__ showed the highest TEAC and HClO‐quenching activities. These herbs were around 5‐ to 7‐fold more potent than the least active herbs. Based on the TEAC assay, 150 mL of tea prepared from __H.__ __baylahuen__, __R.__ __moschata__ and __P.__ __boldus__ would be equivalent to around 200 mg of Trolox^®^. Teas from __H.__ __baylahuen__ and __P.__ __boldus__ were also found to be particularly potent in quenching HClO. In the ONOO^−^ assay, __H.__ __baylahuen__ and __Buddleia__ __globosa__ showed the highest activities. The re

Who reads Antioxidant Screening of Medicinal Herbal Teas?

Author

Hernán Speisky; Claudia Rocco; Catalina Carrasco; Eduardo A. Lissi; Camilo López‐Alarcón

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0951-418X)

Published

2006

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)