Antioxidant activity of Agaricus sp. mushrooms by chemical, biochemical and electrochemical assays

The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed an evaluation of their reducing power and radical scavenging activity, while biochemical assays evaluated the lipid peroxidation inhibition c...

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Published inFood chemistry Vol. 111; no. 1; pp. 61 - 66
Main Authors Barros, Lillian, Falcão, Soraia, Baptista, Paula, Freire, Cristina, Vilas-Boas, Miguel, Ferreira, Isabel C.F.R.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.11.2008
[Amsterdam]: Elsevier Science
Elsevier
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Abstract The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed an evaluation of their reducing power and radical scavenging activity, while biochemical assays evaluated the lipid peroxidation inhibition capacity, using erythrocytes and brain cells as models; the electrochemical characterization of the mushrooms extracts were performed by cyclic voltammetry and differential pulse voltammetry. All the species proved to have antioxidant activity and particularly, by the electrochemical techniques, it has been shown that mushroom extracts revealed similar electrochemical responses, suggesting similar electroactive chemical composition, and oxidation potentials more positive than those of the standards (ascorbic and gallic acids). Agaricus silvaticus was the most efficient species presenting the lowest EC 50 values in the chemical and biochemical assays, and the highest “antioxidant power” in the electrochemical assays.
AbstractList The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed an evaluation of their reducing power and radical scavenging activity, while biochemical assays evaluated the lipid peroxidation inhibition capacity, using erythrocytes and brain cells as models; the electrochemical characterization of the mushrooms extracts were performed by cyclic voltammetry and differential pulse voltammetry. All the species proved to have antioxidant activity and particularly, by the electrochemical techniques, it has been shown that mushroom extracts revealed similar electrochemical responses, suggesting similar electroactive chemical composition, and oxidation potentials more positive than those of the standards (ascorbic and gallic acids). Agaricus silvaticus was the most efficient species presenting the lowest EC₅₀ values in the chemical and biochemical assays, and the highest “antioxidant power” in the electrochemical assays.
The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed an evaluation of their reducing power and radical scavenging activity, while biochemical assays evaluated the lipid peroxidation inhibition capacity, using erythrocytes and brain cells as models; the electrochemical characterization of the mushrooms extracts were performed by cyclic voltammetry and differential pulse voltammetry. All the species proved to have antioxidant activity and particularly, by the electrochemical techniques, it has been shown that mushroom extracts revealed similar electrochemical responses, suggesting similar electroactive chemical composition, and oxidation potentials more positive than those of the standards (ascorbic and gallic acids). Agaricus silvaticus was the most efficient species presenting the lowest EC 50 values in the chemical and biochemical assays, and the highest “antioxidant power” in the electrochemical assays.
The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed an evaluation of their reducing power and radical scavenging activity, while biochemical assays evaluated the lipid peroxidation inhibition capacity, using erythrocytes and brain cells as models; the electrochemical characterization of the mushrooms extracts were performed by cyclic voltammetry and differential pulse voltammetry. All the species proved to have antioxidant activity and particularly, by the electrochemical techniques, it has been shown that mushroom extracts revealed similar electrochemical responses, suggesting similar electroactive chemical composition, and oxidation potentials more positive than those of the standards (ascorbic and gallic acids). Agaricus silvaticus was the most efficient species presenting the lowest EC sub(50) values in the chemical and biochemical assays, and the highest "antioxidant power" in the electrochemical assays.
Author Barros, Lillian
Falcão, Soraia
Vilas-Boas, Miguel
Ferreira, Isabel C.F.R.
Baptista, Paula
Freire, Cristina
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  surname: Barros
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  givenname: Cristina
  surname: Freire
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  email: iferreira@ipb.pt
  organization: CIMO – Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Sta. Apolónia, Apartado 1172, 5301-855 Bragança, Portugal
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Issue 1
Keywords Electrochemical assays
Agaricus sp. mushrooms
Lipid peroxidation inhibition
Fungi
Inhibition
Antioxidant
Agaricus sp. mushrooms;Electrochemical assays;Lipid peroxidation inhibition
Edible fungi
Peroxidation
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Snippet The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed...
The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques. The chemical assays allowed...
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SubjectTerms Agaricus
Agaricus sp. mushrooms
antioxidant activity
assays
biochemical compounds
Biological and medical sciences
chemical analysis
Electrochemical assays
electrochemistry
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
lipid peroxidation
Lipid peroxidation inhibition
mushrooms
thiobarbituric acid-reactive substances
Title Antioxidant activity of Agaricus sp. mushrooms by chemical, biochemical and electrochemical assays
URI https://dx.doi.org/10.1016/j.foodchem.2008.03.033
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https://www.proquest.com/docview/48057846
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