Optimisation of ultrasound-assisted reverse micelles dispersive liquid-liquid micro-extraction by Box-Behnken design for determination of acetoin in butter followed by high performance liquid chromatography.
A novel approach, ultrasound-assisted reverse micelles dispersive liquid-liquid microextraction (USA-RM-DLLME) followed by high performance liquid chromatography (HPLC) was developed for selective determination of acetoin in butter. The melted butter sample was diluted and homogenised by n-hexane and Triton X-100, respectively. Subsequently, 400μL of distilled water was added and the microextraction was accelerated by 4min sonication. After 8.5min of centrifugation, sedimented phase (surfactant-rich phase) was withdrawn by microsyringe and injected into the HPLC system for analysis. The influence of effective variables was optimised using Box-Behnken design (BBD) combined with desirability function (DF). Under optimised experimental conditions, the calibration graph was linear over the range of 0.6-200mgL(-1). The detection limit of method was 0.2mgL(-1) and coefficient of determination was 0.9992. The relative standard deviations (RSDs) were less than 5% (n=5) while the recoveries were in the range of 93.9-107.8%.
Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
Mostafa
M
Roosta
Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran. Electronic address: m_ghaedi@mail.yu.ac.ir.
Mehrorang
M
Ghaedi
Department of Chemistry, University of Ilam, P.O. Box 65315-516, Ilam, Iran. Electronic address: adaneshfar@yahoo.com.
Ali
A
Daneshfar
D000093:Acetoin / Q000737:chemistry*; D002079:Butter / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D059627:Liquid Phase Microextraction / Q000379:methods*; D008823:Micelles; D014465:Ultrasonics
D008823:Micelles; D002079:Butter; D000093:Acetoin
Acetoin; Box–Behnken design; Desirability function; Response surface methodology; Ultrasound-assisted reverse micelles dispersive liquid–liquid microextraction