Abstract
Semicarbazide (SEM) has been proven to extensively exist in foodstuffs due to anthropogenic factor in food processing and possesses various toxic effects on human health. Although many methods have been developed, they often require long analytical time, complex laboratory equipment, trained personnel, difficultly prepared antibodies, or relatively expensive equipment. The present study developed a new method for SEM determination by HPLC with fluorescence detection (FLD). The fluorescence reagent, 2-(11H-benzo[a]carbazol-11-yl) ethyl chloroformate (BCEC), was first used for SEM labeling. The fluorescent labeling conditions were optimized systematically. SEM can be labeled in only 10 min at 40 °C. The labeled SEM was analyzed on an eclipse XDB-C8 column in 8 min. The new method offered the low LOD of 0.4 μg/kg at a signal-to-noise ratio of 3 and also exhibited excellent reproducibility, precision, and accuracy. When applied to analyze several foodstuffs, it showed good applicability. The developed method has been proven to be simple, inexpensive, selective, sensitive, accurate, and reliable for SEM analysis in foodstuffs. Furthermore, this developed method should have a powerful potential in the analysis of SEM from many other food samples.
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Acknowledgments
This work was supported by The National Natural Science Foundation of China (No. 31301595, 21475075, 21475074, and 21275089), the Open Project Program of Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Ocean University (GDPKLAPPS1401), PhD research start-up funds of Qufu Normal University (bsqd 2012017), and the Soft Science Project of Shandong Province (2013RKA08020).
Conflict of Interest
Guoliang Li declares that he has no conflict of interest. Chenhong Tang declares that he has no conflict of interest. Ying Wang declares that she has no conflict of interest. Jing Yang declares that she has no conflict of interest. Hongliang Wu declares that he has no conflict of interest. Guang Chen declares that he has no conflict of interest. Weiheng Kong declares that he has no conflict of interest. Xiaojian Kong declares that he has no conflict of interest. Shucheng Liu declares that he has no conflict of interest. Jinmao You declares that he has no conflict of interest.
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Chenhong Tang contributed equally to this work.
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Li, G., Tang, C., Wang, Y. et al. A Rapid and Sensitive Method for Semicarbazide Screening in Foodstuffs by HPLC with Fluorescence Detection. Food Anal. Methods 8, 1804–1811 (2015). https://doi.org/10.1007/s12161-014-0063-9
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DOI: https://doi.org/10.1007/s12161-014-0063-9