• Corpus ID: 89549504

Determination of polyphenols and antioxidant activity of polar extracts of comfrey (Symphytum officinale L)

@inproceedings{Gonzlez2016DeterminationOP,
  title={Determination of polyphenols and antioxidant activity of polar extracts of comfrey (Symphytum officinale L)},
  author={Diana Gonz{\'a}lez and Yudyt Ver{\'o}nica Talero P{\'e}rez and Wilson Elias Rozo N{\'u}{\~n}ez},
  year={2016}
}

• Diana González, Yudyt Verónica Talero Pérez, W. E. R. Núñez
• Published 1 June 2016
• Chemistry

Introduction: The Comfrey (Symphytum officinalis (L.) (fam. Boraginacea), is a plant that has been used for therapeutic purposes in popular medicine. It has been used externally for bruises, joint pains and rheumatic and also its use for treatment of diseases of the digestive tract. Due to the presence of some hepatotoxic alkaloids, its use has been restricted only to the external. Objetive: To determine the content of entire polifenoles and to study the antirust potential of the polar extracts of the leaves of Comfrey. Methods: The extracts of the leaves of Comfrey were prepared in different solvents: methanol water to 50 %, water and acetate of ethyl. Polyphenol content was then determined by the Folin-Ciocalteu method, and the antioxidant activity by the methods of DPPH •+ (1.1-diphenyl-2-picrylhydrazyl) and ABTS•+ (2.2'-azinobis (3ethylbenzothiazoline-6-sulfonic acid). Results: The three studied polar extracts showed antioxidant potential. The methanol extract showed the highest concentration of polyphenols with a value of 6.93 mg Gallic acid / g dry extract. This same extract had the highest antioxidant potential by the two methods, since most power showed radical scavenging. Conclusions: The antioxidant potential of polar extracts of Comfrey and total polyphenol content was evident.