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- W602741712 abstract "Este artigo aborda a validacao de um metodo analitico para determinacao, em amostras de microdialise, de 4-nerolidilcatecol (4-NRC), uma substância natural extraida da Piper umbellata (Piperaceae) com comprovada atividade antioxidante. O sistema de cromatografia liquida (CLAE-PDA Shimadzu LC 20AT, bomba LC–20AT, injetor com autosamplerSIL– 20A) foi acoplado a uma coluna C18 (Phenomenex®Synergi Fusion 4µ RP-80a, 150 x 4,6 mm). A fase movel constituiu-se de acetonitrila, metanol e agua (54:20:26, v:v:v), sob fluxo de 1,0 mL min-1, com deteccao a 280 nm, volume de injecao 30 µL e tempo de corrida 15 minutos. O metodo foi linear para concentracoes de 5,0-200,0 µg mL-1(r = 0,9996). Os limites de deteccao e de quantificacao foram, respectivamente, 1,35 e 4,5 µg mL-1. A precisao (DPR Palavras-chave: 4-nerolidilcatecol. Estudos de validacao. Matriz biologica. ABSTRACTDevelopment and validation of analytical method to determine 4-nerolidylcatechol (4-NRC) in plasma protein solution used for cutaneous microdialysis studies This paper reports the validation of an analytical method for the determination, in skin microdialysis samples, of 4-nerolidylcatechol (4-NRC), a natural substance extracted from Piper (Pothomorphe) umbellata (Piperaceae) with recognized antioxidant activity. The liquid chromatographic system (HPLC-PDA Shimadzu LC20AT, pump LC-20AT, injector with autosampler SIL-20A) was coupled to a C18 column (Phenomenex® Synergi Fusion 4 µm RP-80 A, 150 x 4.6 mm), with acetonitrile:methanol:water (54:20:26, v:v:v) as the mobile phase, flowing at 1.0 mL min-1, with detection by absorbance at 280 nm, injection volume 30 µL and running time 15 min. The method was linear for concentrations from 5.0 to 200.0 µg mL-1(r=0.9996). Detection and quantitation limits were, respectively, 1.35 and 4.5 µg mL-1, precision (RSD Keywords: 4-nerolidylcatechol. Validation studies. Biological matrix." @default.
- W602741712 created "2016-06-24" @default.
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- W602741712 date "2013-04-01" @default.
- W602741712 modified "2023-09-23" @default.
- W602741712 title "Desenvolvimento e validação de método analítico para determinação do 4-nerolidilcatecol (4-NRC) em solução de proteína plasmática para aplicação em estudos de microdiálise cutânea" @default.
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