Folin-Ciocalteu spectrophotometric assay of ascorbic acid in pharmaceutical tablets and orange juice with pH adjustment and pre-extraction of lanthanum(III)–flavonoid complexes.
Identifieur interne : 000A81 ( Main/Exploration ); précédent : 000A80; suivant : 000A82Folin-Ciocalteu spectrophotometric assay of ascorbic acid in pharmaceutical tablets and orange juice with pH adjustment and pre-extraction of lanthanum(III)–flavonoid complexes.
Auteurs : F Ayca Ozdemir Olgun ; Dilek Ozyurt ; Kadriye Isil Berker ; Birsen Demirata ; Resat ApakSource :
- Journal of the science of food and agriculture [ 1097-0010 ] ; 2014.
English descriptors
- KwdEn :
- Antioxidants (analysis), Ascorbic Acid (analysis), Beverages (analysis), Butanols, Chelating Agents, Citrus sinensis (chemistry), Flavonoids, Humans, Hydrogen-Ion Concentration, Hydrophobic and Hydrophilic Interactions, Ions, Lanthanum, Oxidation-Reduction, Pharmaceutical Preparations, Phenols, Reproducibility of Results, Spectrophotometry (methods), Tablets (chemistry).
- MESH :
- chemical , analysis : Antioxidants, Ascorbic Acid.
- analysis : Beverages.
- chemistry : Citrus sinensis, Tablets.
- methods : Spectrophotometry.
- chemical : Butanols, Chelating Agents, Flavonoids, Humans, Hydrogen-Ion Concentration, Hydrophobic and Hydrophilic Interactions, Ions, Lanthanum, Oxidation-Reduction, Pharmaceutical Preparations, Phenols, Reproducibility of Results.
Abstract
This study proposes modifications to the conventional Folin-Ciocalteu (FC) spectrophotometric method for individually determining ascorbic acid (AA) in complex matrices in the presence of other phenolics and potential interferents. The conventional FC assay in the aqueous phase,which normally measures total water-soluble phenolics and other antioxidants, has recently been modified by incorporating isobutanol (iso-BuOH) in the solvent mixture for the simultaneous determination of lipophilic and hydrophilic antioxidants in foods.
DOI: 10.1002/jsfa.6569
PubMed: 24415496
Affiliations:
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Le document en format XML
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The conventional FC assay in the aqueous phase,which normally measures total water-soluble phenolics and other antioxidants, has recently been modified by incorporating isobutanol (iso-BuOH) in the solvent mixture for the simultaneous determination of lipophilic and hydrophilic antioxidants in foods.</div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Apak, Resat" sort="Apak, Resat" uniqKey="Apak R" first="Resat" last="Apak">Resat Apak</name><name sortKey="Berker, Kadriye Isil" sort="Berker, Kadriye Isil" uniqKey="Berker K" first="Kadriye Isil" last="Berker">Kadriye Isil Berker</name><name sortKey="Demirata, Birsen" sort="Demirata, Birsen" uniqKey="Demirata B" first="Birsen" last="Demirata">Birsen Demirata</name><name sortKey="Olgun, F Ayca Ozdemir" sort="Olgun, F Ayca Ozdemir" uniqKey="Olgun F" first="F Ayca Ozdemir" last="Olgun">F Ayca Ozdemir Olgun</name><name sortKey="Ozyurt, Dilek" sort="Ozyurt, Dilek" uniqKey="Ozyurt D" first="Dilek" last="Ozyurt">Dilek Ozyurt</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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