The voltammetric determination and electrochemical mechanism of alpha-lipoic acid at a multi-walled carbon nanotube-surfactant modified glassy carbon electrode in the food additive sample

Yardım D., Pınar P. T.

Journal of Food Measurement and Characterization, cilt.18, sa.11, ss.9113-9122, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 11
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s11694-024-02863-6
  • Dergi Adı: Journal of Food Measurement and Characterization
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, CAB Abstracts, Compendex, Food Science & Technology Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.9113-9122
  • Anahtar Kelimeler: Alpha-lipoic acid, Antioxidant, Electrochemical oxidation, Food additive, Multi-walled carbon nano-tubes, Surfactant
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

Alpha-lipoic acid (α-LA) is a naturally occurring compound that is both water and fat soluble, functioning as a powerful antioxidant in the body. In this study, multi-walled carbon nanotubes (MWCNTs) with SDS were electrodeposited onto a glassy carbon electrode (GCE) electrochemically. This modified electrode was characterized by electrochemical techniques (EIS, CV). The MWCNT/SDS-modified GCE was utilized for the analysis of α-LA. An electrochemical oxidation mechanism for α-LA was proposed using the developed electrochemical sensor. After optimizing the conditions, the MWCNT/SDS-GCE sensor exhibited a linear response in the concentration range of 0.6–9.0 µM, with a detection limit of 0.15 µM. Additionally, this chemical sensor was effectively utilized for the electrochemical analysis of α-LA in the food additive sample.