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EnglishAn amperometric enzyme electrode for the determination of aspartame was developed by covalent immobilization of alcohol oxidase and a-chymotrypsin, A platinum based hydrogen peroxide electrode was used as the detector, Excellent sensitivity was obtained using batch, flow-through and flow injection methods with detection limits of 2 x 10(-7), 4 x 10(-7) and 10(-6) mol l(-1), respectively, Different strategies for eliminating interfering compounds, including the introduction of an additional alcohol oxidase-catalase membrane and signal subtraction using an alcohol electrode, were employed, A recovery study on seven food samples was carried out and the results were satisfactory.[...]
| Titolo: | Amperometric bienzymic sensor for aspartame |
| Autori: | |
| Data di pubblicazione: | 1997 |
| Rivista: | |
| Abstract: | An amperometric enzyme electrode for the determination of aspartame was developed by covalent immobilization of alcohol oxidase and a-chymotrypsin, A platinum based hydrogen peroxide electrode was used as the detector, Excellent sensitivity was obtained using batch, flow-through and flow injection methods with detection limits of 2 x 10(-7), 4 x 10(-7) and 10(-6) mol l(-1), respectively, Different strategies for eliminating interfering compounds, including the introduction of an additional alcohol oxidase-catalase membrane and signal subtraction using an alcohol electrode, were employed, A recovery study on seven food samples was carried out and the results were satisfactory.[...] |
| Handle: | http://hdl.handle.net/11575/9239 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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