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Immobilized α-glucosidase using polydopamine-coated magnetic nanoparticles for targeted screening of an active component from Toona sinensis.
- Source :
-
Journal of Liquid Chromatography & Related Technologies . 2021, Vol. 44 Issue 13/14, p674-681. 8p. 1 Black and White Photograph, 1 Diagram, 4 Graphs. - Publication Year :
- 2021
-
Abstract
- Toona sinensis is a traditional vegetable with rich nutrition and wide biological activity. In our previous study, an active composition against α-amylase was screened from T. sinensis by ligand fishing. To investigate the effect of T. sinensis on other targets of antidiabetes, in this work, α-glucosidase was immobilized on polydopamine-coated magnetic nanoparticles to further screen the compounds against α-glucosidase by ligand fishing. The enzyme activity test showed that the 70% ethanol extract of T. sinensis (crude sample) had weak α-glucosidase inhibitory activity, but after extraction with different solvents, the ethyl acetate extract showed the highest α-glucosidase inhibitory activity. After immobilization of α-glucosidase on polydopamine (PDA)-coated magnetic nanoparticles, the properties of the enzyme were characterized and determined, and then quercetin-3-O-α-L-rhamnopyranoside was screened by ligand fishing and isolated by high-speed counter-current chromatography using the two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (1:5:1:5, v/v). The results of enzymes assay showed that the screened compound (IC50 value of 374.94 ± 4.35 μg/mL) possessed moderate α-glucosidase inhibitory activity. The presented results not only proved that ligand fishing based on polydopamine-coated magnetic α-glucosidase was an effective method for the rapid discovery of natural active substances, but also further strengthened the evidence of antidiabetic effect of T. sinensis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10826076
- Volume :
- 44
- Issue :
- 13/14
- Database :
- Academic Search Index
- Journal :
- Journal of Liquid Chromatography & Related Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 157638287
- Full Text :
- https://doi.org/10.1080/10826076.2022.2066688