VZL 2010, 79(3):105-110
Immobilization of Acetylcholinesterase and a Construction of Biochemical Biosensor for Identification of Toxic Organophosphates
- 1 Univerzita obrany, Fakulta vojenského zdravotnictví, Centrum pokročilých studií, Hradec Králové
- 2 Univerzita obrany, Fakulta vojenského zdravotnictví, katedra toxikologie, Hradec Králové
- 3 Univerzita Karlova v Praze, Farmaceutická fakulta v Hradci Králové, katedra farmaceutické chemie, Hradec Králové
- 4 Univerzita Pardubice, Fakulta chemicko-technologická, katedra biologických a biochemických věd, Pardubice
Biosenzory jsou analytická zařízení zaloľená na těsném spojení tzv. biorekogničního elementu a fyzikálně chemického převodníku. V této studii byl pouľit sítotiskový senzor s platinovou pracovní elektrodou jako převodník a acetylcholinesterasou jako biorekogničním elementem. Acetylcholinesterasa byla imobilizována rozdílným způsobem, včetně sol-gel technologie, imobilizace na grafitová nanovlákna, precipitace glutaraldehydem a zachycení do sférických grafitových mikročástic. Pro jednotlivé imobilizační postupy byla stanovena účinnost a diskutuje se o praktickém dopadu konstrukce biosenzoru.
Keywords: Biosenzor; Acetylcholinesterasa; Nervově paralytická látka; Detekce; Stanovení; Organofosfát
Biosensors are analytical devices based on tight junction of so-called biorecognition element and a physicochemical transducer. In this study, a screen printed sensor with platinum working electrode as the transducer and acetylcholinesterase as the biorecognition element were used. Acetylcholinesterase was immobilized in a different way including sol-gel technologies, immobilization on graphite nanofibers, precipitation with glutaraldehyde and interception into spherical graphite microparticles. Efficacy for given immobilization protocols was estimated, and practical impact of the study was discussed.
Keywords: Biosensor; Acetylcholinesterase; Nerve agents; Detection; Assay; Organophosphate
Received: January 11, 2010; Published: September 1, 2010 Show citation
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