Methods of Measurement and Evaluation of Natural Antioxidant Capacity/Activity
Methods of Measurement and Evaluation of Natural Antioxidant Capacity/Activity
The chemical diversity of natural antioxidants makes it difficult to separate, detect and quantify individual antioxidants from the complex matrix. Moreover, the total antioxidant power is often more meaningful to evaluate health beneficial effects because of the cooperative action of individual antioxidant species. Currently there is no single antioxidant assay for food labeling because of the lack of standard quantification methods.
Antioxidant assays may be broadly classified as the electron transfer (ET)- and hydrogen atom transfer (HAT)-based assays. The results obtained are usually hardly comparable because of the different mechanisms, redox potentials, pH- and solvent-dependencies, etc., in various assays.
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This project will help identify and quantify properties and mutual effects of antioxidants, to bring a more rational basis to the classification of antioxidants and antioxidant assays and to make the results more comparable and understandable. This project will bring in terms of definitions or definition-like characterization and classification of the chemical and biochemical methods of antioxidant assays as well as related antioxidant chemistry and provide analytical, food chemical, biomedical/clinical, and environmental communities with critical evaluation on this topic.
The task group members are experienced in various methods of antioxidants assay. The chairperson has developed a novel CUPRAC (cupric reducing antioxidant capacity) method1 which has been successfully applied to antioxidants assay in food plants, human serum, and to hydroxyl radical scavengers.2
References
For more information and comments, contact Task Group Chair Resat Apak
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- Contents
- Did You Say IUPAC? What’s That?
- Maria Skłodowska Curie–Madame Curie: From Poland to France, from France to Poland
- Colloid and Interface Science: Alive and Kicking at the 30th Anniversary of IACIS
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- 2009 Winners of the IUPAC Prizes for Young Chemists Announced
- RSC Acquires ChemSpider
- Marking the Centenary of Houben-Weyl
- PI-IUPAC Award 2009–Call for Nominations
- Election of IUPAC Officers and Bureau Members
- Chemistry Research Funding
- Methods of Measurement and Evaluation of Natural Antioxidant Capacity/Activity
- Development of a Pesticide Ecological Risk Assessment and Training Module
- Basic Guidelines for Polymer Nomenclature
- Laboratory Test Terminology Trial-Run Begins
- Provisional Recommendations
- Thermodynamic and Thermophysical Properties of the Reference Ionic Liquid: 1-Hexyl-3-methylimidazolium bis[(trifluorome-thyl)sulfonyl]amide
- Glossary of Terms Used in Ecotoxicology (IUPAC Recommendations 2009)
- Glossary of Terms Related to Pharmaceutics (IUPAC Recommendations 2009)
- Reference Matrices: An Essential Tool for Testing Extrinsic Substance Properties
- Comprehensive Inter-Laboratory Calibration of Reference Materials for δ18O Versus VSMOW Using Various On-Line High-Temperature Conversion Techniques
- Arsenic Pollution and Remediation: An International Perspective
- Compendium of Polymer Terminology and Nomenclature, IUPAC Recommendations 2008
- The IUPAC Green Book in Japanese
- Sustainable Water
- Biopesticides
- Molecular Environmental Soil Science
- The Transmediterranean Colloquium on Heterocyclic Chemistry
- Green Chemistry
- Mark Your Calendar
Articles in the same Issue
- Masthead
- From the Editor
- Contents
- Did You Say IUPAC? What’s That?
- Maria Skłodowska Curie–Madame Curie: From Poland to France, from France to Poland
- Colloid and Interface Science: Alive and Kicking at the 30th Anniversary of IACIS
- Nanotechnology: An Answer to the World’s Water Crisis?
- REACH: Toward the Safer Management of Chemicals*
- Sweet Chemistry
- Discovery of the Element with Atomic Number 112
- 2009 Winners of the IUPAC Prizes for Young Chemists Announced
- RSC Acquires ChemSpider
- Marking the Centenary of Houben-Weyl
- PI-IUPAC Award 2009–Call for Nominations
- Election of IUPAC Officers and Bureau Members
- Chemistry Research Funding
- Methods of Measurement and Evaluation of Natural Antioxidant Capacity/Activity
- Development of a Pesticide Ecological Risk Assessment and Training Module
- Basic Guidelines for Polymer Nomenclature
- Laboratory Test Terminology Trial-Run Begins
- Provisional Recommendations
- Thermodynamic and Thermophysical Properties of the Reference Ionic Liquid: 1-Hexyl-3-methylimidazolium bis[(trifluorome-thyl)sulfonyl]amide
- Glossary of Terms Used in Ecotoxicology (IUPAC Recommendations 2009)
- Glossary of Terms Related to Pharmaceutics (IUPAC Recommendations 2009)
- Reference Matrices: An Essential Tool for Testing Extrinsic Substance Properties
- Comprehensive Inter-Laboratory Calibration of Reference Materials for δ18O Versus VSMOW Using Various On-Line High-Temperature Conversion Techniques
- Arsenic Pollution and Remediation: An International Perspective
- Compendium of Polymer Terminology and Nomenclature, IUPAC Recommendations 2008
- The IUPAC Green Book in Japanese
- Sustainable Water
- Biopesticides
- Molecular Environmental Soil Science
- The Transmediterranean Colloquium on Heterocyclic Chemistry
- Green Chemistry
- Mark Your Calendar
