title: Preparation of chlorogenic acid surface-imprinted magnetic nanoparticles and their usage in separation of traditional Chinese medicine.
abstract: The chlorogenic acid (CGA) surface-imprinted magnetic polymer nanoparticles have been prepared via water-in-oil-in-water multiple emulsions suspension polymerization. This kind of molecularly imprinted polymer nanoparticles (MIPs) had the core-shell structure with the size of about 50 nm. Magnetic susceptibility was given by the successful encapsulation of Fe(3)O(4) nanoparticles with a high encapsulation efficiency of 19.3 wt%. MIPs showed an excellent recognition and selection properties for the imprinted molecule CGA. The recognition capacity of MIPs was near three times than that of non-imprinted polymer nanoparticles (NIPs). Compared with the competitive molecule caffeic acid (CFA), the selectivity of MIPs for CGA was 6.06 times as high as that of NIPs. MIPs could be reused and regenerated, and their rebinding amount in the fifth use was up to 78.85% of that in the first use. The MIPs prepared were successfully applied to the separation of CGA from the extract of Traditional Chinese Medicine Honeysuckle.
authors: College of Pharmaceutical Sciences, Soochow University, No. 199 Ren-ai Road, Dushu Lake Higher Education Town, Jiangsu, Suzhou 215123, PR China.
authors: Xiao-hong
authors: XH
authors: Gu
authors: Rong
authors: R
authors: Xu
authors: Gao-lin
authors: GL
authors: Yuan
authors: Hui
authors: H
authors: Lu
authors: Bing-ren
authors: BR
authors: Gu
authors: Hong-ping
authors: HP
authors: Xie
mesh_terms: D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification; D002726:Chlorogenic Acid / Q000737:chemistry* / Q000302:isolation & purification; D004655:Emulsions / Q000737:chemistry; D052203:Ferrosoferric Oxide / Q000737:chemistry; D031239:Lonicera / Q000737:chemistry*; D008280:Magnetics; D008516:Medicine, Chinese Traditional; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D054802:Molecular Imprinting / Q000379:methods*; D011108:Polymers / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D002109:Caffeic Acids; D004655:Emulsions; D011108:Polymers; D002726:Chlorogenic Acid; C040048:caffeic acid; D052203:Ferrosoferric Oxide