Detection of Trace 17β-estradiol in Food Samples Using Molecularly Imprinted Solid-phase Extraction

Wei Kebo1,2,Zheng Dan1,Shi Yun1 et al1Key Laboratory of Environment and Health of Chinese Ministry of Education,School of Public Health,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,China2Hechi Center for Disease Prevention and Control,Hechi 547000,China  

Objective Molecularly imprinted solid-phase extraction was used to detect trace 17β-estradiol(E2)in food samples.Methods E2-imprinted molecularly imprinted polymers prepared by modified precipitation method were used as SPE sorbents for selectively trapping and pre-concentration of 17β-estradiol from different food samples.High performance liquid chromatography(HPLC)was used to detect the extracted E2.Results Trace(0.116-0.461 nmol/kg)E2 in different dairy and meat samples could be detected accurately when large amount of sample(500 g)was analyzed.Conclusion Molecularly imprinted solid-phase extraction is a reliable method to detect trace E2 in food samples with high accuracy and repeatability.

【Key Words】： 17β-estradiol molecularly imprinted polymers solid-phased extraction food samples
【Fund】： 国家自然科学基金资助项目(No.30972435)
【CateGory Index】： R155.5

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