Journal
JOURNAL OF SEPARATION SCIENCE
Volume 39, Issue 5, Pages 947-955Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201501109
Keywords
Furanic compounds; High-performance liquid chromatography; Liquid-liquid microextraction; Vortex
Categories
Funding
- Universiti Sains Malaysia (USM) [1001/PKIMIA/854002]
- Ministry of Higher Education Malaysia by a MyBrain 15 scholarship
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A novel microextraction method based on vortex-and CO2-assisted liquid-liquid microextraction with salt addition for the isolation of furanic compounds (5-hydroxymethyl-2-furaldehyde, 5-methyl-2-furaldehyde, 2-furaldehyde, 3-furaldehyde, 2-furoic and 3-furoic acids) was developed. Purging the sample with CO2 was applied after vortexing to enhance the phase separation and mass transfer of the analytes. The optimum extraction conditions were: extraction solvent (volume), propyl acetate (125 mu L); sample pH, 2.4; vortexing time, 45 s; salt concentration, 25% w/v and purging time, 5min. The analytes were separated using an ODS Hypersil C-18 column (250x4.6 mm i.d, 5 mu m) under gradient flow. The proposed method showed good linearities (r(2) > 0.999), low detection limits (0.08-1.9 mu g/L) and good recoveries (80.7-122%). The validated method was successfully applied for the determination of the furanic compounds in concentrated juice (mango, date, orange, pomegranate, roselle, mangosteen and soursop) and dried fruit (prune, date and apricot paste) samples.
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