Abrasive Stripping Square‐Wave Voltammetry of Blackberry, Raspberry, Strawberry, Pomegranate, and Sweet and Blue Potatoes

Abstract

Electro-oxidation potentials of 7 fruits and vegetables were determined by abrasive stripping voltammetry. The responses were characterized by 2 peaks with maxima at 0.45 and 0.55 V compared with Ag/AgCl, respectively. Both electrode reactions appear reversible at a frequency of 8 Hz. They can be ascribed to anthocyanidins and ellagic acid as electroactive compounds. By this method, an antioxidative capacity of a certain plant can be quickly estimated without extraction of active components.

Square‐Wave Voltammetry: A Review on the Recent Progress

“…In the recent years, the SW voltammetry has emerged as a viable and cheap alternative to the expensive and time-consuming techniques (such as chromatography, or spectrophotometry, for example) for the determination of inorganic and biologically important compounds. The simple working set-up, the quick time of performing the measurements, the different modes that can be applied, together with its sensitivity, make the SWV a technique of choice for quantification of important classes of compounds such as proteins [82], vitamins [83], phenols [84][85][86][87][88], benzoquinones [89], pesticides, herbicides and fungicides [90][91][92][93][94][95][96][97][98], alkaloids [99], terpenoids [100], heavy metals [101][102][103][104][105][106][107][108][109][110][111][112][113][114][115][116], and drugs [117,118]. One of the most valuable ability of SWV is its application for simultaneous determination of compounds with similar structures present in various pharmaceutical and physiological samples.…”

Electroanalytical chemistry for the analysis of solids: Characterization and classification (IUPAC Technical Report)

“…In several instances, the electrochemical information can be used to obtain wider analytical information; reported applications include monitoring solid state reaction kinetics [218,219], tracing temperature profiles in fired monuments [181,208], authentication of archaeological pieces [220], and dating archaeological materials [221][222][223][224]. As recently reviewed [225], studies include applications to environmental analysis [226,227] and pharmacology, including estimation of anti-oxidative properties of vegetables [228,229]. A number of electroanalytical applications to determine analytes in solution based on electrocatalytic processes occurring carbon paste electrodes incorporating a wide variety of modifiers are known and are available in recent reviews [104][105][106][107]230].…”

Voltammetric analysis of Pinus needles with physiological, phylogenetic, and forensic applications

“…This approach was based on the voltammetry of immobilized particles (VIMP), a methodology which provides the electrochemical response of sparingly soluble solids attached to inert electrodes in contact with suitable electrolytes [23][24][25]. Conventional solutionphase [26][27][28][29][30] and solid-state [31,32] electrochemical techniques have been applied for testing the antioxidative capacity of samples from fruits and vegetables.…”