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A Novel Electrochemical Sensing Strategy for Rapid and Ultrasensitive Detection of 6-Benzylaminopurine in Sprout Vegetables by Hollow Core/Shell-Structured CuO@SiO2 Microspheres

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Abstract

A facile synthesis of hollow core/shell-structured CuO@SiO2 microspheres with uniform size and well-defined morphology is demonstrated. Electrochemical measurement results prove that the as synthesized CuO@SiO2 microspheres exhibit superior electrocatalytic activity toward the determination of 6-Benzylaminopurine (6-BA). Based on this, a simple and rapid electrochemical sensing strategy has been successfully constructed for the detection of 6-BA, which exhibits high sensitivity and good reproducibility. The peak current of 6-BA increases linearly with its concentration in the range of 50 nM ~ 100 μM, and the detection limit is 2.6 nM. In addition, the practical analytical application of the sensing platform is assessed by determination of 6-BA in real sport vegetables with satisfactory results. Armed with the remarkable advantages, such as ease of use, low analyte consumption, inexpensive cost, and fast response time, the electrochemical sensing strategy may hold great potential for the in-field food safety monitoring.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 61201091 and No. 21305119) and the Program for University Innovative Research Team of Henan (No. 15IRTSTHN001).

Conflict of Interest

Tian Gan declares that she has no conflict of interest. Zhaoxia Shi declares that she has no conflict of interest. Ning Liu declares that she has no conflict of interest. Zhen Lv declares that she has no conflict of interest. Junyong Sun declares that he has no conflict of interest. Haibo Wang declares that he has no conflict of interest.

This article does not contain any studies with human or animal subjects.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China

    Tian Gan, Zhaoxia Shi, Ning Liu, Zhen Lv, Junyong Sun & Haibo Wang

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  1. Tian Gan
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  2. Zhaoxia Shi
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  3. Ning Liu
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  4. Zhen Lv
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  5. Junyong Sun
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  6. Haibo Wang
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Correspondence to Tian Gan.

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Gan, T., Shi, Z., Liu, N. et al. A Novel Electrochemical Sensing Strategy for Rapid and Ultrasensitive Detection of 6-Benzylaminopurine in Sprout Vegetables by Hollow Core/Shell-Structured CuO@SiO2 Microspheres. Food Anal. Methods 8, 2504–2514 (2015). https://doi.org/10.1007/s12161-015-0140-8

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  • DOI: https://doi.org/10.1007/s12161-015-0140-8

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