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Reference type: Journal
Authors: Zhu T, Yoon CW, Row KH
Article Title: Solid-phase Extraction of β-Sitosterol from Oldenlandia diffusa Using Molecular Imprinting Polymer.
Publication date: 2011
Journal: Chinese Journal of Chemistry
Volume: 29
Issue: (6)
Page numbers: 1246-1250.
DOI: 10.1002/cjoc.201190231

Abstract: Abstract: The β-sitosterol imprinted polymer was prepared for selective extraction and analysis of β-sitosterol from Oldenlandia diffusa (O. diffusa) followed by HPLC with UV detection. The imprinted polymers show high affinity and selectivity to β-sitosterol. Using this molecularly imprinted polymer (MIP) cartridge as solid-phase extraction (SPE) material, the interferences could be quickly washed out and β-sitosterol was selectively retained and enriched. HPLC analysis method was used to evaluate the characteristics of this MIP material. At the condition of mobile phase composed of MeOH/H2O/H3PO4 (99/1/0.1, V/V/V, pH=6.0) and the flow rate of 1.0 mL min-1, a good linear relationship was demonstrated when the concentrations of β-sitosterol were in the range of 0.50 - 100.0 μg mL-1. The recoveries ranged from 75.3% to 86.5% and the inter-day and intra-day relative standard deviations were less than 5%. This developed HPLC method was proved to be acceptable for extraction of β-sitosterol from O. diffusa
Template and target information: β-sitosterol
Author keywords: β-Sitosterol, cartridge, extraction, molecular imprinting, Oldenlandia diffusa

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