Abstract
Electrochemical and Spectrophotometric Determination of Total Polyphenol Content in Croatian Apple Varieties
Highlights
P HENOLIC compounds or polyphenols are a group of compounds that have more than one phenolic hydroxyl group attached to one or more aromatic rings
The results have shown that quercetin oxidation is reversible and diffusion controlled process in all three investigated electrolytes
Polyphenol content in apples was studied by reversed phase- high performance liquid chromatography (RP-HPLC) with photodiode array detection (PDA),[4] HPLC with UV-Vis diode array (DAD) detector coupled to ion trap (IT) mass spectrometer,[7] ultra performance liquid chromatography (UPLC) coupled to quadrupole time of flight (QTOF) mass spectrometer[7] and Folin-Ciocalteu spectrophotometric method.[8,9]
Summary
P HENOLIC compounds or polyphenols are a group of compounds that have more than one phenolic hydroxyl group attached to one or more aromatic rings. In plants, they occur in both free and bound form as esters or glycosides. Many epidemiological studies suggest that regular consumption of fruits and vegetables rich in polyphenols may reduce the risk of cancer and cardiovascular diseases. Polyphenol content in apples was studied by reversed phase- high performance liquid chromatography (RP-HPLC) with photodiode array detection (PDA),[4] HPLC with UV-Vis diode array (DAD) detector coupled to ion trap (IT) mass spectrometer,[7] ultra performance liquid chromatography (UPLC) coupled to quadrupole time of flight (QTOF) mass spectrometer[7] and Folin-Ciocalteu spectrophotometric method.[8,9] In the last decade, cyclic voltammetry,[10,11,12,13,14] differential pulse voltammetry,[15,16,17] linear
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