DESENVOLVIMENTO E VALIDAÇÃO DE MÉTODO ANALÍTICO ESPECTROFOTOMÉTRICO PARA QUANTIFICAÇÃO DE NEROLIDOL EM UM DISPOSITIVO POLIMÉRICO DE LIBERAÇÃO PROLONGADA, APÓS DERIVATIZAÇÃO COM VANILINA

This work describes the development and validation of analytical method to assay nerolidol in a hydrophilic matrix of quitosan by UV/visible spectroscopy. The method is based on the formation of purple derivative between nerolidol and vanillin. The validated method was linear (2.5 - 50 mg mL-1, concentration range, r > 0.99), precise (RSD 0.44% for repeatability and 0.32% for intermediate precision), accurate (100.04% recovery), robust and specific. Detection and quantitation limits were 0.74 mg mL-1 and 2.26 mg mL-1, respectively. The method is simple and fast and it was applied successfully. Alternatively, the described method may be applied for the analysis of alcohols and unsaturated lipids.