Abstract
A modest, efficient, and sensitive chemically modified electrode was fabricated for sensing curcumin (CRC) through an electrochemically polymerized titan yellow (TY) modified carbon paste electrode (PTYMCPE) in phosphate buffer solution (pH 7.0). Cyclic voltammetry (CV) linear sweep voltammetry (LSV) and differential pulse voltammetry (DPV) approaches were used for CRC detection. PTYMCPE interaction with CRC suggests that the electrode exhibits admirable electrochemical response as compared to bare carbon paste electrode (BCPE). Under the optimized circumstances, a linear response of the electrode was observed for CRC in the concentration range 2 × 10−6 M to 10 × 10−6 M with a limit of detection (LOD) of 10.94 × 10−7 M. Moreover, the effort explains that the PTYMCPE electrode has a hopeful approach for the electrochemical resolution of biologically significant compounds. Additionally, the proposed electrode has demonstrated many advantages such as easy preparation, elevated sensitivity, stability, and enhanced catalytic activity, and can be successfully applied in real sample analysis.
Highlights
Occurring phytochemical in rhizomes of Curcuma longa or turmeric is poly phenol curcumin (1, 7 bis [4-hydroxy-3-methoxy phenyl]-1, 6, heptadione-3, 5-dione), commonly known for its medicinal properties
CPE tailored with titan yellow (TY) can be successfully employed for the determination of CRC by electroanalytical technique
The advantages of the electrode are simple cleaning and restoration of their surface before the series of measurements. These results show that PTYMCPE is useful for CRC analysis in food supplements and other real samples
Summary
Occurring phytochemical in rhizomes of Curcuma longa or turmeric is poly phenol curcumin (1, 7 bis [4-hydroxy-3-methoxy phenyl]-1, 6, heptadione-3, 5-dione), commonly known for its medicinal properties. The primary yellow bioactive component of turmeric, CRC, has received considerable attention in medicine [1,2,3]. It is known for its antiviral, antifungal, antibacterial, antioxidant [4], anti-inflammatory [5], antitumor [6] activities without any side effects [7,8,9]. CRC adulteration with non-permitted colored compounds for economic gain is recently observed. Excessive usage of these compounds beyond limits can cause infertility, liver damage, cancer, birth defects, and allergy [13]. It is very much essential to develop a suitable procedure to monitor the CRC in the presence of non-permitted dyes
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