Bare carbon electrodes as simple and efficient sensors for the quantification of caffeine in commercial beverages.

ABSTRACT: Food quality control is a mandatory task in the food industry and relies on the availability of simple, cost-effective and stable sensing platforms. In the present work, the applicability of bare glassy carbon electrodes for routine analysis of food samples was evaluated as a valid alternative to chromatographic techniques, using caffeine as test analyte. A number of experimental parameters were optimized and a differential pulse voltammetry was applied for quantification experiments. The detection limit was found to be 2 × 10^-5 M (3σ criterion) and repeatability was evaluated by the relative standard deviation of 4.5%. The influence of sugars, and compounds structurally related to caffeine on the current response of caffeine was evaluated and found to have no significant influe

SUBMITTER: Redivo L 

PROVIDER: S-EPMC5990824 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature