Journal
ANALYTICAL METHODS
Volume 10, Issue 28, Pages 3540-3551Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ay00670a
Keywords
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Funding
- Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission, through the Food and Functional Food Research Cluster of Khon Kaen University, Materials Chemistry Research Center, Departm
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In this study, the influence of surfactants (SDS, TX100 and CTAB) to modify surface polarity of graphene oxide adsorbent is proposed for the extraction of -carotene and total carotenoids from fruit juice samples. Under the optimum conditions based on simultaneous ultrasound-assisted surfactant surface decorated graphene oxide and ultrasound-assisted dispersive solid-phase microextraction (UAD-SPME) prior to UV-vis spectrophotometry and HPLC, the calibration curve was in the range of 1.0-6.0 mg L-1 (R-2 = 0.9999), the limit of detection was 0.04 mg L-1 and the limit of quantification was 0.12 mg L-1. The relative standard deviations were 1.98% and 2.38% for intra-day and inter-day analysis, respectively. For real sample analysis, the contents of total carotenoids were found in the range of 2.37-65.02 mg -carotene per L, while that of -carotene analyzed by HPLC was rather reasonable (0.37-46.82 mg L-1). The recovery tests yielded satisfactory results, ranging between 93.00% and 109.5%. Therefore, the developed method is a green way for the UAD-SPME of -carotene and total carotenoids from fruit juices.
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