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Evaluation of antioxidant properties of dermocosmetic creams by direct electrochemical measurements
- Source :
- International Journal of Cosmetic Science. 27:254-254
- Publication Year :
- 2005
- Publisher :
- Wiley, 2005.
-
Abstract
- Cyclic voltammetry and linear sweep voltammetry were preliminarily used in order to evaluate the global antioxidant properties of dermocosmetic creams. Experiments were performed by introducing electrodes directly into the creams without any pretreatment of the samples. Current-potential curves showed significant anodic current depending on the antioxidant-containing cream studied. In comparison, little amperometric response was recorded with an antioxidant-free cream base. Aqueous solutions of the corresponding antioxidants showed analogous anodic waves and similar peak potentials. A correlation between the global anodic peak and the presence of the antioxidant species in the cream was made with eleven skin creams, attesting to the reliability of the method. Among the tested electrode materials, platinum gave the best results in terms of electrochemical kinetics and measurement precision (current peak standard deviation less than 5%). Exposure of a depilatory cream to oxidizing agents (e.g., hydrogen peroxide, air, or light) caused a decrease in peak current as expected. This methodology enabled us to evaluate the evolution of the total antioxidant capacity under oxidative stress and gives encouragement to further development of a voltammetric method to quantify cream antioxidant power.
- Subjects :
- Aging
digestive, oral, and skin physiology
Analytical chemistry
Electrochemical kinetics
food and beverages
Pharmaceutical Science
Dermatology
Amperometry
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
Chemistry (miscellaneous)
Drug Discovery
Oxidizing agent
Linear sweep voltammetry
Skin Cream
Cyclic voltammetry
Hydrogen peroxide
Voltammetry
Nuclear chemistry
Subjects
Details
- ISSN :
- 14682494 and 01425463
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- International Journal of Cosmetic Science
- Accession number :
- edsair.doi.dedup.....fecd8dea49894b5554d933cc6af96a5c