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- Title
Application of gold-nickel nanoparticle alloy sensors in measuring L-carnitine content in sports nutritional foods.
- Authors
Han, Yufei; Kong, Yani; Kwan, Cho Hong; Sun, Shuze
- Abstract
This research presents the development of a gold-nickel (Au-Ni) nanoparticle alloy sensor for accurately quantifying L-carnitine in sports nutritional products. Addressing the limitations of traditional methods like HPLC and mass spectrometry, this sensor integrates the high conductivity of gold with the electrocatalytic activity of nickel, offering a more efficient alternative. The study focused on synthesizing Au-Ni nanoparticle films, optimizing enzyme sensor configuration, and evaluating performance metrics in real sample analysis. The sensor, utilizing carnitine acetyltransferase, displayed a significant sensitivity enhancement with a detection limit of 50 nM, and a broad dynamic range from 1 to 400 µM. In practical applications, the sensor showed a remarkable stability, retaining 90% of its initial response after extensive use, and achieved high accuracy in sample analysis with recovery rates between 97.3% and 103.5%. These findings demonstrate the sensor's potential for improving quality control in the sports nutrition industry, offering a rapid, cost-effective, and highly sensitive tool for L-carnitine measurement.
- Subjects
SPORTS nutrition; ELECTROCHEMICAL sensors; NANOPARTICLES; CARNITINE; DETECTION limit
- Publication
Journal of Food Measurement & Characterization, 2024, Vol 18, Issue 8, p6533
- ISSN
2193-4126
- Publication type
Article
- DOI
10.1007/s11694-024-02668-7