Optimization of Magnetic and Paper-Based Molecularly Imprinted Polymers for Selective Extraction of Charantin in Momordica charantia
Issued Date
2023-05-01
Resource Type
ISSN
16616596
eISSN
14220067
Scopus ID
2-s2.0-85159284397
Pubmed ID
37175576
Journal Title
International Journal of Molecular Sciences
Volume
24
Issue
9
Rights Holder(s)
SCOPUS
Bibliographic Citation
International Journal of Molecular Sciences Vol.24 No.9 (2023)
Suggested Citation
Nuchtavorn N., Leanpolchareanchai J., Visansirikul S., Bunsupa S. Optimization of Magnetic and Paper-Based Molecularly Imprinted Polymers for Selective Extraction of Charantin in Momordica charantia. International Journal of Molecular Sciences Vol.24 No.9 (2023). doi:10.3390/ijms24097870 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/82824
Title
Optimization of Magnetic and Paper-Based Molecularly Imprinted Polymers for Selective Extraction of Charantin in Momordica charantia
Author's Affiliation
Other Contributor(s)
Abstract
Charantin is a mixture of β-sitosterol and stigmastadienol glucosides, which effectively lowers high blood glucose. Novel molecularly imprinted polymers coated magnetic nanoparticles (Fe3O4@MIPs) and filter paper (paper@MIPs) were synthesized by sol-gel polymerization to selectively extract charantin. β-sitosterol glucoside was selected as a template for imprinting a specific recognition owing to its larger molecular surface area than that of 5,25-stigmastadienol glucoside. Factorial designs were used to examine the effects of the types of porogenic solvents and cross-linkers on the extraction efficiency and imprinting factor before investigating other factors (for example, amounts of template and coated MIPs, and types of substrates for MIP immobilization). Compared to traditional liquid–liquid extraction, the optimal Fe3O4@MIP-based dispersive micro-solid phase extraction and paper@MIP extraction provided excellent extraction efficiency (87.5 ± 2.1% and 85.0 ± 2.9%, respectively) and selectivity. Charantin was well separated, and a new unidentified sterol glucoside was observed using the developed high-performance liquid chromatography with diode-array detection (Rs ≥ 2.0, n > 16,400). The developed methods were successfully utilized to extract and quantify charantin from M. charantia fruit powder and herbal products. Moreover, these methods are rapid (<10 min), inexpensive, simple, reproducible, and environmentally friendly.
