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DOI10.1016/j.chroma.2010.02.068
Synthesis and application of a T-2 toxin imprinted polymer
De Smet, David1; Monbaliu, Sofie1; Dubruel, Peter2; Van Peteghem, Carlos1; Schacht, Etienne2; De Saeger, Sarah1
通讯作者De Smet, David
来源期刊JOURNAL OF CHROMATOGRAPHY A
ISSN0021-9673
出版年2010
卷号1217期号:17页码:2879-2886
英文摘要

The synthesis of a T-2 toxin imprinted polymer and its application in food analysis are reported for the first time. A molecularly imprinted polymer (MIP) for the selective recognition of T-2 toxin (T-2) was synthesized by bulk polymerization. Methacrylamide and ethyleneglycol dimethacrylate were applied as functional monomer and cross-linker, respectively. Molecularly imprinted solid-phase extraction (MISPE) procedures were optimized for further application in the analysis of T-2. Scatchard plot analysis revealed that two classes of imprinted binding sites were formed in the imprinted polymer. The dissociation constant (K(D)) of the higher affinity binding sites was 7.0 mu mol/l, while the K(D) of the lower affinity binding sites was 54.7 mu mol/l. The performance of the MW throughout the clean-up of spiked maize, barley and oat sample extracts was compared with the results obtained when using non-imprinted polymer, OASIS HLB (R) and immunoaffinity columns (IAC). Depending on the food matrix and the spiked concentration, recoveries after MISPE and non-imprinted solid-phase extraction varied respectively from 60% to 73% and from 21% to 57%. Recoveries obtained after clean-up using OASIS HLB (R) and IAC were in the range of 74-104% and 60-85%, respectively. Although highest recoveries were obtained with OASIS HLB (R) sorbents, the designed MIP and the IAC were superior regarding selectivity, cross-reactivity, matrix effect, limits of detection (LOD) and limits of quantification (LOQ). Depending on the matrix, LOD after MISPE ranged from 0.4 mu g/kg to 0.6 mu g/kg and LOQ from 1.4 mu g/kg to 1.9 mu g/kg. LOD and LOQ after OASIS HLB (R) clean-up varied from 0.9 mu g/kg to 3.5 mu g/kg and from 3.1 mu g/kg to 11.7 mu g/kg, respectively. The LOD and LOQ values obtained with IAC were in the range of 0.3-2.3 mu g/kg and 1.0-7.7 mu g/kg, respectively. Analysis of 39 naturally contaminated samples (maize, barley and oat) by liquid chromatography tandem mass spectrometry revealed that the MIP could be an excellent alternative for clean-up of contaminated food samples. (C) 2010 Elsevier B.V. All rights reserved.


英文关键词Molecularly imprinted polymer T-2 toxin Solid-phase extraction Mycotoxins Molecular recognition Food
类型Article
语种英语
国家Belgium
收录类别SCI-E
WOS记录号WOS:000276975200017
WOS关键词SOLID-PHASE EXTRACTION ; TANDEM MASS-SPECTROMETRY ; LIQUID-CHROMATOGRAPHY ; FUSARIUM TOXINS ; CEREAL-GRAINS ; TRICHOTHECENES ; FOOD ; ZEARALENONE ; MYCOTOXINS ; CLEANUP
WOS类目Biochemical Research Methods ; Chemistry, Analytical
WOS研究方向Biochemistry & Molecular Biology ; Chemistry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/165056
作者单位1.Univ Ghent, Fac Pharmaceut Sci, Lab Food Anal, B-9000 Ghent, Belgium;
2.Univ Ghent, Fac Sci, Polymer Chem & Biomat Res Grp, B-9000 Ghent, Belgium
推荐引用方式
GB/T 7714
De Smet, David,Monbaliu, Sofie,Dubruel, Peter,et al. Synthesis and application of a T-2 toxin imprinted polymer[J],2010,1217(17):2879-2886.
APA De Smet, David,Monbaliu, Sofie,Dubruel, Peter,Van Peteghem, Carlos,Schacht, Etienne,&De Saeger, Sarah.(2010).Synthesis and application of a T-2 toxin imprinted polymer.JOURNAL OF CHROMATOGRAPHY A,1217(17),2879-2886.
MLA De Smet, David,et al."Synthesis and application of a T-2 toxin imprinted polymer".JOURNAL OF CHROMATOGRAPHY A 1217.17(2010):2879-2886.
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