Planta Medica International Open 2017; 4(S 01): S1-S202
DOI: 10.1055/s-0037-1608411
Poster Session
Georg Thieme Verlag KG Stuttgart · New York

Equisetum hyemale L. efficacy of organic extract in function of phenolic and flavanol content, antioxidant activity, reducing ability and allelopathy

V Flores Xavier
1   Universidade Federal de Ouro Preto, OURO PRETO, Brazil
,
R Gonçalves Rodrigues Das Dores
1   Universidade Federal de Ouro Preto, OURO PRETO, Brazil
,
C Silva e Souza
2   Universidade Federal de Viçosa, Viçosa, Brazil
,
T Vieira Braga
3   Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
› Author Affiliations
Further Information

Publication History

Publication Date:
24 October 2017 (online)

 

This study aimed to evaluate organic extracts in function of biomass production, organic extracts yields, phenolic, flavonoids, flavanols and antioxidant capacity levels and the allelopathic potential of Equisetum hyemale L. The extracts were made in ethanol, methanol and ethyl acetate by maceration. The determination of phenolic by Folin Ciocalteu, flavanols by vanillin acid, flavonoids by aluminum chloride, antioxidant activity by DPPH and reducing power by ferric chloride, allelopathy test front lettuce seed and biotoxicity (DL50) by Artemia salina. The effectiveness of the vegetable extract under analysis is linked to the quality of the chemical properties of the extract. In all treatments color and odor of the extracts remained similar to that of the in natura species, after obtaining the dry residue. The highest yields of extracts, phenolic compounds and flavonoids were in methanolic extract (EH-MEOH), flavanols and reducing potential in the ethyl acetate extract (EH-ACOET), efficacy of obtaining the dry extract and antioxidant activity in ethanolic extract (EH-ETOH). In the bioassays, the lowest concentrations of all treatments did not lead to inhibition of growth and the lower toxicity can be attributed to the extract in ethyl acetate (EH-ACOET). Regarding the antioxidant properties can been directly related to bioflavonoids, and ethyl acetate and ethanol extracts were low toxicity.