期刊
RSC ADVANCES
卷 11, 期 22, 页码 13486-13496出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra10824c
关键词
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资金
- National Natural Science Foundation of China [81973451]
- Fundamental Research Funds for the Central Universities [2019CDYGYB027, 2019CDXYHG0013, 2017CDJXFLX0014]
- Fundamental and Frontier Research Fund of Chongqing [cstc2019jsyj-yzysbAX0020, cstc2018jcyjAX0661]
- Science and Technology Research Program of Chongqing Municipal Education Commission [KJZD-K201800103]
- Graduate Research and Innovation Foundation of Chongqing, China [CYS18033]
- Venture & Innovation Support Program for Chongqing Overseas Returnees
- Tang Foundations
In this study, a magnetic molecularly imprinted polymer ZDM-MIPs was synthesized to efficiently adsorb and detect aspartame (ASP) in soft drinks. The use of ZDM-MIPs-MGCE showed a good linear relationship for quantification of ASP concentrations with high accuracy and precision. This method has potential for practical application in determining ASP content in food samples.
In this work, an efficient and sensitive magnetic molecularly imprinted polymer with zein and deep eutectic solvents (ZDM-MIPs) was designed and synthesized to exclusively adsorb and detect aspartame (ASP). We used zein, together with deep eutectic solvents (DESs) and Fe3O4 as the cross-linker, functional monomer and support material, respectively. A magnetic glassy carbon electrode (MGCE) modified with ZDM-MIPs was used for selective recognition of ASP. The electrochemical response of the ZDM-MIPs-MGCE for quantification of ASP was evaluated with a portable electrochemical detection station with differential pulse voltammetry and cyclic voltammetry. The responses of ZDM-MIPs-MGCE signified a good linear relationship with ASP concentrations in the range of 0.1-50 mu g mL(-1). The sensor systems showed good accuracy and precision, with recovery percentages between 84% and 107%. These results suggested that the obtained ZDM-MIPs exhibited good adsorption performance for ASP in soft drinks, and this method could be used to determine ASP content in actual food samples.
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