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- Title
Enhanced detection of vitamin C in sports beverages using electrochemical sensors with nano-gold particles.
- Authors
Bian, Lin; Wang, Xin; Liu, Dachao
- Abstract
This study aimed to develop a novel electrochemical sensor using nano-gold particle modified pyrolytic graphite sheet electrodes to improve the detection and quantification of vitamin C content in sports beverages. The electrodes were fabricated by depositing 20–50 nm gold nanoparticles onto pretreated pyrolytic graphite sheets using a spontaneous adsorption technique. Square wave voltammetry served as the main analytical technique for optimizing and testing the performance of the nano-gold modified sensor. Key parameters optimized included supporting electrolyte pH, voltage scan rate and pulse frequency. The sensor gave highly linear detection across a vitamin C concentration range spanning 5–100 μg/mL, with sensitivity peaking under acidic pH 5 conditions. A limit of detection of 1.86 μg/mL was achieved. Recovery testing in spiked commercial sports drink samples yielded excellent accuracy between 97.3 and 104.2%. Additionally, vitamin C levels quantified via the sensor showed close agreement with results from a standard spectrophotometric method, confirming its reliability. This research signifies an important advancement in nutrient monitoring capabilities for the sports nutrition industry, providing a rapid, selective and cost-effective sensor for verifying vitamin contents.
- Subjects
VITAMIN C; ELECTROCHEMICAL sensors; SPORTS nutrition; SQUARE waves; GOLD nanoparticles; SPORTS drinks; PYROLYTIC graphite
- Publication
Journal of Food Measurement & Characterization, 2024, Vol 18, Issue 5, p3820
- ISSN
2193-4126
- Publication type
Article
- DOI
10.1007/s11694-024-02457-2