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Application of silicalite-modified electrode for the development of sucrose biosensor with improved characteristics

Abstract : The application of silicalite for improvement of working characteristics of conductometric enzyme biosensors for determination of sucrose was studied in this research. Biosensors based on different types of silicalite-modified electrodes were studied and compared according to their analytical characteristics. Polyethylenimine/glutaraldehyde/silicalite-modified biosensors showed higher sensitivity compared with others type of biosensors. Moreover, the polyethylenimine/glutaraldehyde/silicalite sucrose biosensors were characterized by high selectivity and signal reproducibility (relative standard deviation (RSD) = 2.78% for glucose measurements and RSD = 3.2% for sucrose measurements). Proposed biosensors were used for determination of sucrose in different samples of beverages. The obtained results had good correlation with results obtained by HPLC. Thus, polyethylenimine/glutaraldehyde/ silicalite-modified biosensors have shown perspective characteristics for the development of effective conductometric enzyme biosensors.
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Viktoriya M. Pyeshkova, Oleksandr Y. Dudchenko, Oleksandr O Soldatkin, Berna Ozansoy Kasap, Florence Lagarde, et al.. Application of silicalite-modified electrode for the development of sucrose biosensor with improved characteristics. Nanoscale Research Letters, SpringerOpen, 2015, 10, pp.149. ⟨10.1186/s11671-015-0853-z⟩. ⟨hal-01229965⟩

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