Free radical scavenging activity of Pterogyne nitens Tul. (Fabaceae)

Autor: Regasini, Luis Octavio, Oliveira, Camila Martins, Rebuglio Vellosa, Jose Carlos, Mascarenhas Faria Oliveira, Olga Maria, Siqueira Silva, Dulce Helena, Vanderlan Bolzani
Přispěvatelé: Universidade Estadual Paulista (Unesp)
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ResearcherID
Popis: Made available in DSpace on 2013-08-28T14:08:36Z (GMT). No. of bitstreams: 1 WOS000264902200042.pdf: 93208 bytes, checksum: a8b529d2abf71e23dd61cb5b779ae933 (MD5) Made available in DSpace on 2013-09-30T19:10:40Z (GMT). No. of bitstreams: 2 WOS000264902200042.pdf: 93208 bytes, checksum: a8b529d2abf71e23dd61cb5b779ae933 (MD5) WOS000264902200042.pdf.txt: 20870 bytes, checksum: 89d09d55ddab2b561cb452f96513dbb7 (MD5) Previous issue date: 2008-12-17 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T14:17:34Z No. of bitstreams: 2 WOS000264902200042.pdf: 93208 bytes, checksum: a8b529d2abf71e23dd61cb5b779ae933 (MD5) WOS000264902200042.pdf.txt: 20870 bytes, checksum: 89d09d55ddab2b561cb452f96513dbb7 (MD5) Made available in DSpace on 2014-05-20T14:17:34Z (GMT). No. of bitstreams: 2 WOS000264902200042.pdf: 93208 bytes, checksum: a8b529d2abf71e23dd61cb5b779ae933 (MD5) WOS000264902200042.pdf.txt: 20870 bytes, checksum: 89d09d55ddab2b561cb452f96513dbb7 (MD5) Previous issue date: 2008-12-17 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) As part of our ongoing research on antioxidant agents from Brazilian flora, twenty extracts and fractions obtained from Pterogyne nitens Tulasne (Fabaceae) were screened for free radical scavenging activity by using ABTS [2,2'-azinobis(3-ethylenebenzothiazoline-6-sulfonic acid)] and DPPH (2,2diphenyl- 1-picrylhydrazyl-hydrate) radicals colorimetric assay and beta-carotene bleaching test. The strongest activity was found in ethyl acetate fraction from the stem barks, exhibiting IC(50) values (in mu g/ml) of 2.10 +/- 0.1 and 10.2 +/- 0.3 on ABTS(center dot+) and DPPH(center dot), respectively. Additionally, chromatographic fractionation of stem barks yielding myricetin, quercitrin and mirycetrin, three flavonols with remarkable antioxidant activity. São Paulo State Univ, Inst Chem, Dept Organ Chem, Araraquara, Brazil São Paulo State Univ, Inst Chem, Dept Biochem & Technol Chem, Araraquara, Brazil São Paulo State Univ, Inst Chem, Dept Organ Chem, Araraquara, Brazil São Paulo State Univ, Inst Chem, Dept Biochem & Technol Chem, Araraquara, Brazil
Databáze: OpenAIRE
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