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Total polyphenols from Syzygium cumini (L.) Skeels fruit extract BJPS
Migliato,Ketylin Fernanda; Carvalho,Elisângela Simões de; Sacramento,Luis Vitor Silva do; Mello,João Carlos Palazzo de; Baby,André Rolim; Velasco,Maria Valéria Robles; Salgado,Hérida Regina Nunes.
A precise, accurate and low cost spectrophotometric method was developed and validated for routine determination of total polyphenols, as pyrogallic acid equivalents, from the percolated and lyophilized extract of Syzygium cumini (L.) Skeels fruits. Validation was assessed experimentally and data were rigorously treated by statistical analysis. Analytical parameters were: linearity, interval (range), precision and recovery/accuracy, limit of detection (LOD, μg mL-1) and limit of quantification (LOQ, μg mL-1). The visible spectrophotometric method presented linearity (r² = 0.9979 ± 0.0010) over the concentration range 0.25-7.5 μg mL-1 of standard pyrogallic acid, precision < 2.918171%, recovery/accuracy ranging from 96.228693 to 107.17701%, LOD = 0.21 μg...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Total polyphenols; Syzygium cumini; Botanical extract; Analytical method validation; Spectrophotometry.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000100015
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Evaluation of the potential insecticide activity of Tagetes minuta (Asteraceae) essential oil against the head lice Pediculus humanus capitis (Phthiraptera: Pediculidae) Neotropical Entomology
Cestari,Ivanice M.; Sarti,Silvio J.; Waib,Cláudia M.; Branco Jr.,Armando Castello.
Pediculosis is a worldwide head infestation caused by Pediculus humanus capitis De Geer. Resistance to chemical active ingredients shows the importance of new approaches for head lice control. The aim of the present work was to evaluate the potential insecticide activity of the medicinal plant Tagetes minuta (Asteraceae) against P. humanus capitis as well as to investigate histopathological aspects to find the target sites of the botanical extract in the insect. Lice were collected from heads of infested children 6-12 years old from Marília, São Paulo State, Brazil. All the procedures from the collection to the insecticide evaluation were done according to the World Health Organization protocols. Batches of 10 lice each were released onto a clean piece of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Pediculosis; Botanical extract.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600021
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