Solid-phase Extraction of β-Sitosterol from Oldenlandia diffusa Using Molecular Imprinting Polymer.pdfVIP
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Solid-phase Extraction of β-Sitosterol from Oldenlandia diffusa Using Molecular Imprinting Polymer.pdf
FULLPAPE
Solid-phaseExtractionof/3-Sitosterolfrom Oldenlandiadiffusa
UsingMolecularImprintingPolymer
Zhu,Tao(朱涛) Yoon,Changhwan(尹彰皖) Row,Kyungho(卢敬吴)
DepartmentofChemicalEngineering,InhaUniversity,253Yonghybin—Dong,Nam—Ku,lncheon402—75),Korea
The口一sitosterolimprintedpolymerwaspreparedforselectiveextractionandanalysisof 一sitosterolfrom Old—
enlandiadiffusa(0.d~ffusa)ofllowedbyHPLCwithUVdetection.Theimprintedpolymersshowhighaffinityand
selectivityto口一sitostero1.Usingthismolecularlyimprintedpolymer(MIP)cartridgeassolid—phaseextraction(SPE)
materia1.the interferencescould bequicklywashedoutand 一sitosterolwasselectivelyretained and enriched.
HPLC analysismethodwasusedtoevaluatethecharacteristicsofthisM IP materia1.Attheconditionofmobile
phasecomposedofMeOH/H20H/ P04(99/1/0.1,WW pH=6.0)andtheflowrateof1.0mLomin ,agoodlinear
relationshipwasdemonstratedwhentheconcentrationsof 一sitosterolwereintherangeof0.50— 100.0pg,mL 。.
Therecoveriesrangedfrom 75.3% to86.5% andtheinter—dayandintra—dayrelativestandarddeviationswerelcss
than5%.ThisdevelopedHPLCmethodwasprovedtobeacceptableforextractionof一sitosterolrfomO.diffusa.
Keywords 一sitosterol,cartridge,extraction,molecularimprinting,Oldenlandiadiffusa
lntrOdUCtiOn plifyextractionandincreaseitsem ciency.Solid—phase
extractionfSPE1hasbeendevelopedasanalternativeto
0ldenlandia diffusa (0.diffusa)isawell—known
1iquid1iquid extraction forthe separation.purification
medicinalplantandislistedasaningredientofChinese
and solventexchangeofsolutesfrom solution.Itcan
patentmedicine. This plant is a member of
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