Determination of Ascorbic Acid Content of Some Fruit Juices and Wine by Voltammetry Performed at Pt and Carbon Paste Electrodes

“…The measured signal is independent on the distance that radiation travels in the analytical cell or on the turbidity, and the dynamic range is quite extended [36][37][38][39][40]. One aspect in favour of the electrochemical methods is the electroactivity of most antioxidants, the electron transfer being involved in antioxidant -free radical reactions, enabling a prompt screening of the antioxidant capacity of a series of organic biocompounds even in complex or coloured samples [37][38][39][40][41].…”

Section: Electrochemical Methods For Total Antioxidant Capacity Assesmentioning

confidence: 99%

“…Voltammetry as potentiodynamic assay is based on the recording of the current intensity at controlled potential variation and exploits the reducing ability of antioxidants or the reversibility of redox active substances which are either single or part of a sample [36][37][38][39][40][41]. The confirmed analytical advantages of the various voltammetric techniques are: enhanced sensitivity, a broad concentration range (10 -12 to 10 -1 M), numerous appliable solvents and electrolytes, wide working temperature ranges, fast analysis, simultaneous determination of analytes (organic and inorganic), the capacity to assess kinetic and mechanistic parameters (including reasonable estimation of unknown ones), the facility of different potential waveforms generation yielding low current intensity values, these features being sustained by a strongly developed theoretical backround [42].…”

Section: Voltammetrymentioning

confidence: 99%

Electrochemical Methods for Total Antioxidant Capacity and its Main Contributors Determination: A review

2015

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Abstract:Backround: The present review focuses on electrochemical methods for antioxidant capacity and its main contributors assessment. The main reactive oxygen species, responsible for low density lipoprotein oxidation, and their reactivity are reminded. The role of antioxidants in counteracting the factors leading to oxidative stress-related degenerative diseases occurence, is then discussed. Antioxidants can scavenge free radicals, can chelate pro-oxidative metal ions, or quench singlet oxygen. When endogenous factors (uric acid, bilirubin, albumin, metallothioneins, superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glutathione-

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“…Glutathione is important for a strong immune system; an increase in the levels of glutathione can redress the fall due to the age of the immune function. Glutathione is found in fruits, vegetables, fresh meat cooked (Pisoschi et al, 2011).…”

Section: Vitamin C Is Important For Reloading a Fat-soluble Vitamin Ementioning

confidence: 99%

One Can Slow Down the Aging through Antioxidants

Aversa¹,

Petrescu²,

Apicella³

et al. 2016

American Journal of Engineering and Applied Sciences

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Free radicals are natural nanoparticles which are doing their part well defined in the human cell, but then they must be annihilated or eliminated to not destroy the cell or another part of our body. It has been shown that residual free radicals in the body are responsible for the aging. The role to annihilate them is ful-filled by the antioxidants. Antioxidants are a group of compounds produced by the organism or that occur naturally in many foods. Antioxidants work together in the human body to maintain health and vigor, especially during the last decades of life. They do this by protecting us from harm caused by free radicals that can destroy skin and tissues healthy cells of the organism. Antioxidants are chemical compounds with many and varied applications. Naturally present in our diet, through fruits, vegetables, tea or red wine, they are recognized to be good for health. In fact, antioxidants protect our body's proteins and nucleic acids from oxidation. In the industry, antioxidants are also used as food additives to increase the shelf life of food. They are also present in the packaging or the wheels of cars because they prevent synthetic materials from becoming crumbly and brittle. Finally, in the cosmetics industry, creams containing antioxidants are known for their anti-aging properties. An antioxidant is a molecule that decreases or prevents the oxidation of other chemicals. Oxidation is part of an oxidation-reduction reaction that transfers electrons from a substance to an oxidizing agent. This reaction can produce radicals that cause destructive chain reactions. However, whatever the field of application, the unstable nature of antioxidants is a problem: The molecules degrade rapidly and have a particularly limited power of action over time.

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Determination of Ascorbic Acid Content of Some Fruit Juices and Wine by Voltammetry Performed at Pt and Carbon Paste Electrodes

Cited by 97 publications

References 31 publications

Medicinal Plants from Jordan in the Treatment of Diabetes: Traditional Uses vs.In VitroandIn VivoEvaluations – Part 2

Medicinal Plants from Jordan in the Treatment of Diabetes: Traditional Uses vs.In VitroandIn VivoEvaluations – Part 2

Electrochemical Methods for Total Antioxidant Capacity and its Main Contributors Determination: A review

One Can Slow Down the Aging through Antioxidants

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