D
Dulce Helena Siqueira Silva
Researcher at Sao Paulo State University
Publications - 137
Citations - 3185
Dulce Helena Siqueira Silva is an academic researcher from Sao Paulo State University. The author has contributed to research in topics: DPPH & Gallic acid. The author has an hindex of 31, co-authored 135 publications receiving 2828 citations. Previous affiliations of Dulce Helena Siqueira Silva include University of California, Los Angeles & Universidade Federal de Alfenas.
Papers
More filters
Journal ArticleDOI
Produtos naturais: atualidade, desafios e perspectivas
Angelo C. Pinto,Dulce Helena Siqueira Silva,Vanderlan da Silva Bolzani,Norberto Peporine Lopes,Rosângela de A. Epifanio +4 more
TL;DR: In this paper, the authors present an overview on the historical facts and the recent state of art of Chemistry of Natural Products which, in the course of 25 years of SBQ, have led to the present development of this area in Brazil.
Journal ArticleDOI
Determination of the relative contribution of phenolic antioxidants in orange juice by voltammetric methods
Wellington R. Sousa,Cléber da Rocha,Carmen Lúcia Cardoso,Dulce Helena Siqueira Silva,Maria Valnice Boldrin Zanoni +4 more
TL;DR: In this paper, the electrochemical oxidation of caffeic, chlorogenic, sinapic, ferulic and p -coumaric acids was investigated by cyclic voltammetry on acetate buffer pH 5.6.
Journal ArticleDOI
The use of standard methodology for determination of antifungal activity of natural products against medical yeasts Candida sp and Cryptococcus sp
Liliana Scorzoni,Tatiane Benaducci,Ana Marisa Fusco Almeida,Dulce Helena Siqueira Silva,Vanderlan da Silva Bolzani,Maria José Soares Mendes Gianinni +5 more
TL;DR: Different methods for determination of antifungal activity of natural products are discussed and the use of M27-A2 microdilution test from CLSI, as general standard methodology for testing plant extracts activity is recommended.
Journal Article
Comparative study of disk diffusion and microdilution methods for evaluation of antifungal activity of natural compounds against medical yeasts Candida spp and Cryptococcus sp
Liliana Scorzoni,Tatiane Benaducci,Ana Marisa Fusco Almeida,Dulce Helena Siqueira Silva,Vanderlan da Silva Bolzani,Maria José Soares Mendes-Giannini +5 more
TL;DR: Disciplina de Micologia Clinica Departemente de Analises Clinicas Universidade Estadual Paulista, UNESP, Araraquara, SP
Journal ArticleDOI
Flavonols from Pterogyne nitens and their evaluation as myeloperoxidase inhibitors.
Luis Octávio Regasini,José Carlos Rebuglio Vellosa,Dulce Helena Siqueira Silva,Maysa Furlan,Olga Maria Mascarenhas de Oliveira,Najeh Maissar Khalil,Iguatemy Lourenço Brunetti,Maria Claudia Marx Young,Eliezer J. Barreiro,Vanderlan da Silva Bolzani +9 more
TL;DR: A myeloperoxidase inhibitory kaempferol derivative, namely pterogynoside (1), was isolated from fruits of Pterogyne nitens, along with six known flavonols, ka Kempferol, afzelin, Kaempferitrin, quercetin, isoquercetrin and rutin, and the structures were elucidated primarily from 1D and 2D NMR spectroscopic analyses.