Abstract
A carbon paste electrode (CPE) modified with poly(vinylpyrrolidone) (PVP) was employed as an electrochemical sensor for the determination of total phenolic compounds (TPCs) in vegetables by square-wave voltammetry (SWV). The calibration curve obtained using kaempferol as a model for TPCs showed two linear ranges from 0.05 to 0.50μmolL−1 (R2=0.980) and from 0.50 to 6.0μmolL−1 (R2=0.998). With the use of the most sensitive range, the limits of detection and quantification were 40nmolL−1 and 160nmolL−1, respectively. The following sequence was determined for the content of TPCs in the vegetables analysed: spinach>cabbage>broccoli>chicory. The accuracy of the results provided by the proposed sensor was evaluated by comparison with the values obtained applying the Folin-Ciocalteau (FC) methodology.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
