Abstract
The demand for foods with high antioxidant capacity has increased and research on food analysis continues to increase. Chlorogenic acid is a potent antioxidant molecule and can exhibit various physiological activities. This study aims to analyze Mirra coffee for the determination of chlorogenic acid using an adsorptive voltammetric method. The method is based on the strong synergistic effect between carbon nanotubes and nanoparticles of gadolinium oxide and tungsten, providing sensitive determination of chlorogenic acid. The proposed method yielded a dynamic linear range of 2.5×10-9∼1.6×10-6 M with a detection limit of 1.08×10-9 M for chlorogenic acid. The amount of chlorogenic acid in Mirra coffee was found to be 46.1±0.69mg/L by the proposed electrochemical platform.
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