Targeting excessive free radicals with peels and juices of citrus fruits: grapefruit, lemon, lime and orange.
Identifieur interne : 000A51 ( Ncbi/Curation ); précédent : 000A50; suivant : 000A52Targeting excessive free radicals with peels and juices of citrus fruits: grapefruit, lemon, lime and orange.
Auteurs : Rafaela Guimarães [Portugal] ; Lillian Barros ; João C M. Barreira ; M João Sousa ; Ana Maria Carvalho ; Isabel C F R. FerreiraSource :
- Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association [ 1873-6351 ] ; 2010.
English descriptors
- KwdEn :
- Ascorbic Acid (chemistry), Ascorbic Acid (pharmacology), Beverages (analysis), Carbohydrates (chemistry), Carbohydrates (pharmacology), Carotenoids (chemistry), Carotenoids (pharmacology), Citrus (chemistry), Citrus aurantiifolia (chemistry), Citrus paradisi (chemistry), Citrus sinensis (chemistry), Colorimetry, Free Radical Scavengers (chemistry), Free Radical Scavengers (pharmacology), Free Radicals (chemistry), Fruit (chemistry), Lipid Peroxidation (drug effects), Oxidation-Reduction, Phenols (chemistry), Phenols (pharmacology), Reference Standards, beta Carotene (chemistry).
- MESH :
- chemical , chemistry : Ascorbic Acid, Carbohydrates, Carotenoids, Free Radical Scavengers, Free Radicals, Phenols, beta Carotene.
- chemical , pharmacology : Ascorbic Acid, Carbohydrates, Carotenoids, Free Radical Scavengers, Phenols.
- analysis : Beverages.
- chemistry : Citrus, Citrus aurantiifolia, Citrus paradisi, Citrus sinensis, Fruit.
- drug effects : Lipid Peroxidation.
- Colorimetry, Oxidation-Reduction, Reference Standards.
Abstract
A comparative study between the antioxidant properties of peel (flavedo and albedo) and juice of some commercially grown citrus fruit (Rutaceae), grapefruit (Citrus paradisi), lemon (Citrus limon), lime (Citrusxaurantiifolia) and sweet orange (Citrus sinensis) was performed. Different in vitro assays were applied to the volatile and polar fractions of peels and to crude and polar fraction of juices: 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity, reducing power and inhibition of lipid peroxidation using beta-carotene-linoleate model system in liposomes and thiobarbituric acid reactive substances (TBARS) assay in brain homogenates. Reducing sugars and phenolics were the main antioxidant compounds found in all the extracts. Peels polar fractions revealed the highest contents in phenolics, flavonoids, ascorbic acid, carotenoids and reducing sugars, which certainly contribute to the highest antioxidant potential found in these fractions. Peels volatile fractions were clearly separated using discriminant analysis, which is in agreement with their lowest antioxidant potential.
DOI: 10.1016/j.fct.2009.09.022
PubMed: 19770018
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pubmed:19770018Le document en format XML
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<affiliation wicri:level="1"><nlm:affiliation>CIMO/Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal.</nlm:affiliation>
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<author><name sortKey="Barros, Lillian" sort="Barros, Lillian" uniqKey="Barros L" first="Lillian" last="Barros">Lillian Barros</name>
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<author><name sortKey="Barreira, Joao C M" sort="Barreira, Joao C M" uniqKey="Barreira J" first="João C M" last="Barreira">João C M. Barreira</name>
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<author><name sortKey="Sousa, M Joao" sort="Sousa, M Joao" uniqKey="Sousa M" first="M João" last="Sousa">M João Sousa</name>
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<term>Carbohydrates (pharmacology)</term>
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<term>Carotenoids (pharmacology)</term>
<term>Citrus (chemistry)</term>
<term>Citrus aurantiifolia (chemistry)</term>
<term>Citrus paradisi (chemistry)</term>
<term>Citrus sinensis (chemistry)</term>
<term>Colorimetry</term>
<term>Free Radical Scavengers (chemistry)</term>
<term>Free Radical Scavengers (pharmacology)</term>
<term>Free Radicals (chemistry)</term>
<term>Fruit (chemistry)</term>
<term>Lipid Peroxidation (drug effects)</term>
<term>Oxidation-Reduction</term>
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<term>Phenols (pharmacology)</term>
<term>Reference Standards</term>
<term>beta Carotene (chemistry)</term>
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<term>Free Radicals</term>
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<term>Carotenoids</term>
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<term>Citrus paradisi</term>
<term>Citrus sinensis</term>
<term>Fruit</term>
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<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Lipid Peroxidation</term>
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<term>Reference Standards</term>
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<front><div type="abstract" xml:lang="en">A comparative study between the antioxidant properties of peel (flavedo and albedo) and juice of some commercially grown citrus fruit (Rutaceae), grapefruit (Citrus paradisi), lemon (Citrus limon), lime (Citrusxaurantiifolia) and sweet orange (Citrus sinensis) was performed. Different in vitro assays were applied to the volatile and polar fractions of peels and to crude and polar fraction of juices: 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity, reducing power and inhibition of lipid peroxidation using beta-carotene-linoleate model system in liposomes and thiobarbituric acid reactive substances (TBARS) assay in brain homogenates. Reducing sugars and phenolics were the main antioxidant compounds found in all the extracts. Peels polar fractions revealed the highest contents in phenolics, flavonoids, ascorbic acid, carotenoids and reducing sugars, which certainly contribute to the highest antioxidant potential found in these fractions. Peels volatile fractions were clearly separated using discriminant analysis, which is in agreement with their lowest antioxidant potential.</div>
</front>
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