LAUSR

β-sitosterol is a major bioactive constituent in plants with potent anticancer effects against many human cancer cells, but its bioavailability and therapeutic efficacy are limited by its poor solubility in water. In this study, C6 -imidazole chitosan, C6 -1-methylimidazole chitosan, C6 -1-ethylimidazole chitosan, C6 -1-vinylimidazole chitosan, C6 -1-allylimidazole chitosan, and C6 -1-butylimidazole chitosan were prepared to extract β-sitosterol from edible oil samples via ultrasonic-assisted solid liquid extraction. The structures and properties of the newly synthesized products were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and elemental analysis. The extraction abilities of the derivatives were tested in the experiment with HPLC (LOD 0.21 μg/g and LOQ 0.67 μg/g), and the %RSD (< 3.25%) and recovery values of the prepared chitosan derivatives toward β-sitosterol (average: 100.20%) were acceptable. The spiked inter-day and intra-day recoveries of β-sitosterol were 102.60 ± 2.78 and 103.90 ± 3.04%, respectively. The actual amounts of β-sitosterol extracted from three real samples using C6 -imidazole chitosan according to the solid phase extraction method were 3302.40, 901.70, and 2045.60 mg/kg for corn oil, olive oil, and pea oil, respectively. This article is protected by copyright. All rights reserved.