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Sirvins C, Goupy P, Promeyrat A, Dufour C. Correction to " C-Nitrosation, C-Nitration, and Coupling of Flavonoids with N-Acetyltryptophan Limit This Amine N-Nitrosation in a Simulated Cured and Cooked Meat". J Agric Food Chem 2024. [PMID: 38700254 DOI: 10.1021/acs.jafc.4c03341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
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Sirvins C, Goupy P, Promeyrat A, Dufour C. C-Nitrosation, C-Nitration, and Coupling of Flavonoids with N-Acetyltryptophan Limit This Amine N-Nitrosation in a Simulated Cured and Cooked Meat. J Agric Food Chem 2024; 72:4777-4787. [PMID: 38377948 DOI: 10.1021/acs.jafc.3c08445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Nitrite is a common additive in cured meat formulation that provides microbiological safety, lipid oxidation management, and typical organoleptic properties. However, it is associated with the formation of carcinogenic N-nitrosamines. In this context, the antinitrosating capacity of selected flavonoids and ascorbate was evaluated in a simulated cooked and cured meat under formulation and digestion conditions. N-Acetyltryptophan was used as a secondary amine target. (-)-Epicatechin, rutin, and quercetin were all able to limit the formation of N-acetyl-N-nitrosotryptophan (NO-AcTrp) at pH 2.5 and pH 5 although (-)-epicatechin was 2 to 3-fold more efficient. Kinetics for the newly identified compounds allowed us to unravel common mechanistic pathways, which are flavonoid oxidation by nitrite followed by C-nitration and an original covalent coupling between NO-AcTrp and flavonoids or their nitro and nitroso counterparts. C-nitrosation of the A-ring was evidenced only for (-)-epicatechin. These major findings suggest that flavonoids could help to manage N-nitrosamine formation during cured meat processing, storage, and digestion.
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Affiliation(s)
- Charlène Sirvins
- INRAE, Avignon University, UMR408 SQPOV, F-84000 Avignon, France
- IFIP, French Pork and Pig Institute, F-35650 Le Rheu, France
| | - Pascale Goupy
- INRAE, Avignon University, UMR408 SQPOV, F-84000 Avignon, France
| | | | - Claire Dufour
- INRAE, Avignon University, UMR408 SQPOV, F-84000 Avignon, France
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Angoy A, Ginies C, Goupy P, Bornard I, Ginisty P, Sommier A, Valat M, Chemat F. Development of a green innovative semi-industrial scale pilot combined microwave heating and centrifugal force to extract essential oils and phenolic compounds from orange peels. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2020.102338] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Goupy P, Genot C, Hammaz F, Halimi C, Caris‐Veyrat C, Borel P. Mechanisms Governing the Transfer of Pure and Plant Matrix Carotenoids Toward Emulsified Triglycerides. Mol Nutr Food Res 2020; 64:e1900911. [DOI: 10.1002/mnfr.201900911] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 01/09/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Pascale Goupy
- UMR408 SQPOV « Sécurité et Qualité des Produits d'Origine Végétale » INRAEAvignon Université F‐84000 Avignon France
| | - Claude Genot
- UR1268 BIA « Biopolymères Interactions Assemblages »INRAE F‐44316 Nantes France
| | - Faiza Hammaz
- C2VNINRAEINSERMAix Marseille Univ F‐13005 Marseille France
| | | | - Catherine Caris‐Veyrat
- UMR408 SQPOV « Sécurité et Qualité des Produits d'Origine Végétale » INRAEAvignon Université F‐84000 Avignon France
| | - Patrick Borel
- C2VNINRAEINSERMAix Marseille Univ F‐13005 Marseille France
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Page D, Labadie C, Reling P, Bott R, Garcia C, Gaillard C, Fourmaux B, Bernoud-Hubac N, Goupy P, Georgé S, Caris-Veyrat C. Increased diffusivity of lycopene in hot break vs. cold break purees may be due to bioconversion of associated phospholipids rather than differential destruction of fruit tissues or cell structures. Food Chem 2019; 274:500-509. [DOI: 10.1016/j.foodchem.2018.08.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 08/06/2018] [Accepted: 08/14/2018] [Indexed: 12/30/2022]
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Angoy A, Valat M, Ginisty P, Sommier A, Goupy P, Caris-Veyrat C, Chemat F. Development of microwave-assisted dynamic extraction by combination with centrifugal force for polyphenols extraction from lettuce. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.08.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Goupy P, Carail M, Giuliani A, Duflot D, Dangles O, Caris-Veyrat C. Carotenoids: Experimental Ionization Energies and Capacity at Inhibiting Lipid Peroxidation in a Chemical Model of Dietary Oxidative Stress. J Phys Chem B 2018; 122:5860-5869. [PMID: 29771123 DOI: 10.1021/acs.jpcb.8b03447] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Carotenoids are important natural pigments and micronutrients contributing to health prevention by several mechanisms, including their electron-donating (antioxidant) activity. In this work, a large series of carotenoids, including 11 carotenes and 14 xanthophylls, have been investigated by wavelength-resolved atmospheric pressure photoionization mass spectrometry (DISCO line of SOLEIL synchrotron), thus allowing the experimental determination of their ionization energy (IE) for the first time. On the other hand, the carotenoids have been also investigated for their ability to inhibit the heme iron-induced peroxidation of linoleic acid in mildly acidic micelles, a simple but relevant chemical model of oxidative stress in the gastric compartment. Thus, the carotenoids can be easily classified from IC50 concentrations deduced from the time dependence of the lipid hydroperoxide concentration. With a selection of two carotenes and three xanthophylls a quantitative analysis is also provided to extract stoichio-kinetic parameters. The influence of the carotenoid structure (number of conjugated carbon-carbon double bonds, presence of terminal six-membered rings, hydroxyl, keto, and/or epoxy groups) on the IE, IC50, and stoichio-kinetic parameters is discussed in details. The data show that the antioxidant activity of carotenes is well correlated to their electron-donating capacity, which itself largely depends on the length of the conjugated polyene chain. By contrast, the IE of xanthophylls is poorly correlated to the polyene chain length because of the strong, and sometimes unexpected, electronic effects of the O-atoms. Although IE remains an approximate predictor of the antioxidant activity of xanthophylls, other factors (interaction with the aqueous phase, competing radical-scavenging mechanisms, the residual activity of the antioxidant's oxidation products) probably play a significant role.
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Affiliation(s)
- Pascale Goupy
- INRA, UMR408 SQPOV , 84000 Avignon , France.,Avignon University, UMR408 SQPOV , 84000 Avignon , France
| | - Michel Carail
- INRA, UMR408 SQPOV , 84000 Avignon , France.,Avignon University, UMR408 SQPOV , 84000 Avignon , France
| | - Alexandre Giuliani
- Synchrotron SOLEIL , St-Aubin, BP48 , 91192 Gif sur Yvette Cedex, France.,INRA, U1008 , BP 71627 , 44316 Nantes , France
| | - Denis Duflot
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523 , Université Lille1 , 59655 Villeneuve d'Ascq Cedex, France
| | - Olivier Dangles
- INRA, UMR408 SQPOV , 84000 Avignon , France.,Avignon University, UMR408 SQPOV , 84000 Avignon , France
| | - Catherine Caris-Veyrat
- INRA, UMR408 SQPOV , 84000 Avignon , France.,Avignon University, UMR408 SQPOV , 84000 Avignon , France
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Margier M, Buffière C, Goupy P, Remond D, Halimi C, Caris-Veyrat C, Borel P, Reboul E. Opposite Effects of the Spinach Food Matrix on Lutein Bioaccessibility and Intestinal Uptake Lead to Unchanged Bioavailability Compared to Pure Lutein. Mol Nutr Food Res 2018; 62:e1800185. [DOI: 10.1002/mnfr.201800185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/05/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Marielle Margier
- INRA, INSERM, Aix-Marseille Université C2VN; F-13005 Marseille France
| | - Caroline Buffière
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne; F-63000 Clermont-Ferrand France
| | - Pascale Goupy
- UMR408 SQPOV Sécurité et Qualité des Produits d'Origine Végétale Domaine Saint Paul, INRA, Avignon University; F-84000 Avignon France
| | - Didier Remond
- Université Clermont Auvergne, INRA, UNH, CRNH Auvergne; F-63000 Clermont-Ferrand France
| | - Charlotte Halimi
- INRA, INSERM, Aix-Marseille Université C2VN; F-13005 Marseille France
| | - Catherine Caris-Veyrat
- UMR408 SQPOV Sécurité et Qualité des Produits d'Origine Végétale Domaine Saint Paul, INRA, Avignon University; F-84000 Avignon France
| | - Patrick Borel
- INRA, INSERM, Aix-Marseille Université C2VN; F-13005 Marseille France
| | - Emmanuelle Reboul
- INRA, INSERM, Aix-Marseille Université C2VN; F-13005 Marseille France
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Goncalves A, Margier M, Roi S, Collet X, Niot I, Goupy P, Caris-Veyrat C, Reboul E. Intestinal scavenger receptors are involved in vitamin K1 absorption. J Biol Chem 2014; 289:30743-30752. [PMID: 25228690 DOI: 10.1074/jbc.m114.587659] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Vitamin K1 (phylloquinone) intestinal absorption is thought to be mediated by a carrier protein that still remains to be identified. Apical transport of vitamin K1 was examined using Caco-2 TC-7 cell monolayers as a model of human intestinal epithelium and in transfected HEK cells. Phylloquinone uptake was then measured ex vivo using mouse intestinal explants. Finally, vitamin K1 absorption was compared between wild-type mice and mice overexpressing scavenger receptor class B type I (SR-BI) in the intestine and mice deficient in cluster determinant 36 (CD36). Phylloquinone uptake by Caco-2 cells was saturable and was significantly impaired by co-incubation with α-tocopherol (and vice versa). Anti-human SR-BI antibodies and BLT1 (a chemical inhibitor of lipid transport via SR-BI) blocked up to 85% of vitamin K1 uptake. BLT1 also decreased phylloquinone apical efflux by ∼80%. Transfection of HEK cells with SR-BI and CD36 significantly enhanced vitamin K1 uptake, which was subsequently decreased by the addition of BLT1 or sulfo-N-succinimidyl oleate (CD36 inhibitor), respectively. Similar results were obtained in mouse intestinal explants. In vivo, the phylloquinone postprandial response was significantly higher, and the proximal intestine mucosa phylloquinone content 4 h after gavage was increased in mice overexpressing SR-BI compared with controls. Phylloquinone postprandial response was also significantly increased in CD36-deficient mice compared with wild-type mice, but their vitamin K1 intestinal content remained unchanged. Overall, the present data demonstrate for the first time that intestinal scavenger receptors participate in the absorption of dietary phylloquinone.
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Affiliation(s)
- Aurélie Goncalves
- INRA, UMR 1260 "Nutrition, Obesity, and Risk of Thrombosis," F-13385 Marseille, France,; INSERM, UMR 1062, F-13385 Marseille, France,; Aix-Marseille Université, F-13385 Marseille, France
| | - Marielle Margier
- INRA, UMR 1260 "Nutrition, Obesity, and Risk of Thrombosis," F-13385 Marseille, France,; INSERM, UMR 1062, F-13385 Marseille, France,; Aix-Marseille Université, F-13385 Marseille, France
| | - Stéphanie Roi
- INRA, UMR 1260 "Nutrition, Obesity, and Risk of Thrombosis," F-13385 Marseille, France,; INSERM, UMR 1062, F-13385 Marseille, France,; Aix-Marseille Université, F-13385 Marseille, France
| | - Xavier Collet
- INSERM/UPS U1048, Hôpital Rangueil, F-31432 Toulouse, France
| | - Isabelle Niot
- UMR 866 INSERM/AgroSup Dijon/Université de Bourgogne "Physiologie de la Nutrition," F-21000 Dijon, France
| | - Pascale Goupy
- INRA, UMR 408 Sécurité et Qualité des Produits d'Origine Végétale, Site Agroparc, F-84000 Avignon, France, and; Université d'Avignon et des Pays de Vaucluse, F-84000 Avignon, France
| | - Catherine Caris-Veyrat
- INRA, UMR 408 Sécurité et Qualité des Produits d'Origine Végétale, Site Agroparc, F-84000 Avignon, France, and; Université d'Avignon et des Pays de Vaucluse, F-84000 Avignon, France
| | - Emmanuelle Reboul
- INRA, UMR 1260 "Nutrition, Obesity, and Risk of Thrombosis," F-13385 Marseille, France,; INSERM, UMR 1062, F-13385 Marseille, France,; Aix-Marseille Université, F-13385 Marseille, France,.
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Goupy P, Reynaud E, Dangles O, Caris-Veyrat C. Antioxidant activity of (all-E)-lycopene and synthetic apo-lycopenoids in a chemical model of oxidative stress in the gastro-intestinal tract. NEW J CHEM 2012. [DOI: 10.1039/c1nj20437h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Müller L, Goupy P, Fröhlich K, Dangles O, Caris-Veyrat C, Böhm V. Comparative study on antioxidant activity of lycopene (Z)-isomers in different assays. J Agric Food Chem 2011; 59:4504-4511. [PMID: 21476575 DOI: 10.1021/jf1045969] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Several studies have implicated the potent antioxidant properties of lycopene. However, most of the studies used only the (all-E)-isomer. (Z)-Isomers of lycopene were found in substantial amounts in processed foods and in human tissues. In the present study, we investigated in vitro the antioxidant activity of (5Z)-, (9Z)-, and (13Z)-lycopene compared to the (all-E)-isomer. Additionally, prolycopene, the (7Z,9Z,7'Z,9'Z)-isomer found in tangerine tomatoes, was analyzed. No significant differences were found between the isomers in ferric reducing antioxidant power assay and in bleaching the radical cation of 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), both based on ET mechanisms. In contrast, scavenging activity against peroxyl radicals generated by thermal degradation of 2,2'-azobis(2-amidinopropane) (AAPH) was higher in the (Z)-isomers. (5Z)-Lycopene was most antioxidant in scavenging lipid peroxyl radicals, evaluated by analyzing the inhibition of MbFe(III) lipid peroxidation of linoleic acid in mildly acidic conditions (pH 5.8) in a micellar environment, modeling a possible antioxidant action in the gastric compartment.
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Affiliation(s)
- Lars Müller
- Institute of Nutrition, Friedrich Schiller University Jena, Jena, Germany
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Georgé S, Tourniaire F, Gautier H, Goupy P, Rock E, Caris-Veyrat C. Changes in the contents of carotenoids, phenolic compounds and vitamin C during technical processing and lyophilisation of red and yellow tomatoes. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.08.024] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Goupy P, Bautista-Ortin AB, Fulcrand H, Dangles O. Antioxidant activity of wine pigments derived from anthocyanins: hydrogen transfer reactions to the dpph radical and inhibition of the heme-induced peroxidation of linoleic acid. J Agric Food Chem 2009; 57:5762-5770. [PMID: 19566083 DOI: 10.1021/jf900841b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The consumption of red wine can provide substantial concentrations of antioxidant polyphenols, in particular grape anthocyanins (e.g., malvidin-3-O-beta-d-glucoside (1)) and specific red wine pigments formed by reaction between anthocyanins and other wine components such as catechin (3), ethanol, and hydroxycinnamic acids. In this work, the antioxidant properties of red wine pigments (RWPs) are evaluated by the DPPH assay and by inhibition of the heme-induced peroxidation of linoleic acid in acidic conditions (a model of antioxidant action in the gastric compartment). RWPs having a 1 and 3 moieties linked via a CH(3)-CH bridge appear more potent than the pigment with a direct 1-3 linkage. Pyranoanthocyanins derived from 1 reduce more DPPH radicals than 1 irrespective of the substitution of their additional aromatic ring. Pyranoanthocyanins are also efficient inhibitors of the heme-induced lipid peroxidation, although the highly hydrophilic pigment derived from pyruvic acid appears less active.
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Affiliation(s)
- Pascale Goupy
- UMR408 Sécurité et Qualité des Produits d'Origine Végétale, INRA, Site Agroparc, Domaine St-Paul, F-84914 Avignon, France
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Goupy P, Vulcain E, Caris-Veyrat C, Dangles O. Dietary antioxidants as inhibitors of the heme-induced peroxidation of linoleic acid: mechanism of action and synergism. Free Radic Biol Med 2007; 43:933-46. [PMID: 17697938 DOI: 10.1016/j.freeradbiomed.2007.06.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2007] [Revised: 05/29/2007] [Accepted: 06/01/2007] [Indexed: 11/29/2022]
Abstract
In this work, a quantitative kinetic model for investigating the heme-induced peroxidation of linoleic acid and its inhibition by two important dietary antioxidants, quercetin and alpha-tocopherol, is developed. The main conclusions of this work are: (1) The time dependence of the lipid hydroperoxide concentration is critically dependent on the rate constant for lipid hydroperoxide cleavage, initial fraction of lipid hydroperoxides among the pool of conjugated dienes, and rate of heme degradation. (2) The lipophilic antioxidant alpha-tocopherol acts as a chain-breaking antioxidant that quickly reduces 1-2 eq of lipid peroxyl radicals (inhibition of propagation), whereas the more hydrophilic antioxidant quercetin is only marginally chain-breaking but capable of reducing 4-5 eq of iron-oxo initiator (inhibition of initiation). (3) Based on comparisons between experimental peroxidation curves and simulated curves assuming additivity, it can be concluded that combinations of alpha-tocopherol and quercetin are generally synergistic. The kinetic analysis and HPLC titrations of the antioxidants both suggest that synergism mainly arises from a capacity of alpha-tocopherol to regenerate some quercetin oxidation products still endowed with a reducing activity.
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Affiliation(s)
- Pascale Goupy
- UMR408 Sécurité et Qualité des Produits d'Origine Végétale, INRA, Université d'Avignon, Domaine St Paul, Site Agroparc, 84914 Avignon, France
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Vulcain E, Goupy P, Caris-Veyrat C, Dangles O. Inhibition of the metmyoglobin-induced peroxidation of linoleic acid by dietary antioxidants: Action in the aqueous vs. lipid phase. Free Radic Res 2005; 39:547-63. [PMID: 16036331 DOI: 10.1080/10715760500073865] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The gastric digestion of food containing oxidizable lipids and iron catalysts for peroxide decomposition such as (met)myoglobin from muscle meat can be accompanied by an extensive formation of potentially toxic lipid hydroperoxides. An early protective action by dietary antioxidants in the gastro-intestinal tract is plausible, especially for poorly bioavailable antioxidants such as polyphenols. Hence, the ability of antioxidants to inhibit lipid peroxidation initiated by dietary iron in mildly acidic emulsions is a valuable and general model. In this work, the ability of some ubiquitous dietary antioxidants representative of the main antioxidant classes (alpha-tocopherol, the flavonol quercetin, beta-carotene) to inhibit the metmyoglobin-induced peroxidation of linoleic acid is investigated by UV-visible spectroscopy and HPLC in mildly acidic emulsions. The phenolic antioxidants quercetin and alpha-tocopherol come up as the most efficient peroxidation inhibitors. Inhibition by quercetin essentially proceeds in the aqueous phase via a fast reduction of an unidentified activated iron species (with a partially degraded heme) produced by reaction of metmyoglobin with the lipid hydroperoxides. This reaction is faster by, at least, a factor 40 than the reduction of ferrylmyoglobin (independently prepared by reacting metmyoglobin with hydrogen peroxide) by quercetin. By contrast, alpha-tocopherol mainly acts in the lipid phase by reducing the propagating lipid peroxyl radicals. The poorer inhibition afforded by beta-carotene may be related to both its slower reaction with the lipid peroxyl radicals and its competitive degradation by autoxidation and/or photo-oxidation.
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Affiliation(s)
- Emmanuelle Vulcain
- UMR A 408 INRA-University of Avignon, Safety and Quality of Plant Products, Site Agroparc, Domaine St-Paul, 84914 Avignon Cedex 9, France
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Reboul E, Borel P, Mikail C, Abou L, Charbonnier M, Caris-Veyrat C, Goupy P, Portugal H, Lairon D, Amiot MJ. Enrichment of tomato paste with 6% tomato peel increases lycopene and beta-carotene bioavailability in men. J Nutr 2005; 135:790-4. [PMID: 15795436 DOI: 10.1093/jn/135.4.790] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A high intake of tomato products is associated with a lower incidence of upper aerodigestive tract and prostate cancers. This beneficial effect might be explained by a higher intake of carotenoids such as lycopene and/or beta-carotene. Because tomato peels, usually eliminated during tomato processing, are a valuable source of these carotenoids, we designed a study to examine whether a tomato paste enriched in tomato peels (ETP, 6% peel) increases the absorption of these carotenoids compared to a classically made tomato paste (CTP). Carotenoid bioaccessibility was evaluated using an in vitro digestion model by measuring the amount of carotenoids transferred from the pastes to micelles. Carotenoid absorption by human intestinal cells (Caco-2) was evaluated after the addition of carotenoid-rich micelles (obtained from the in vitro digestion of the 2 pastes). Carotenoid bioavailability in humans was assessed by measuring chylomicron carotenoid responses in a postprandial experiment in which 8 healthy men consumed 2 meals containing either the ETP or the CTP. ETP contained 47.6 mg lycopene (58% more than CTP) and 1.75 mg beta-carotene (99% more than CTP) per 100 g of paste. In micelles, 30% more lycopene and 81% more beta-carotene were recovered after ETP than after CTP in vitro digestion. The amount of carotenoids absorbed by Caco-2 cells was 75% greater (P < or = 0.05) for lycopene and 41% greater (P < or = 0.05) for beta-carotene after the addition of micelles from ETP than from CTP. After ETP intake the chylomicron beta-carotene response was 74% greater than after CTP intake, and the lycopene response tended to be greater (34.1%, P = 0.093). Peel enrichment of tomato paste with tomato peel is an interesting option for increasing lycopene and beta-carotene intakes.
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Affiliation(s)
- Emmanuelle Reboul
- INSERM, U476 Nutrition Humaine et lipides, INRA, UMR 1260, Univ Méditerranée Aix-Marseille 2, Marseille F-13385, France
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Goupy P, Dufour C, Loonis M, Dangles O. Quantitative kinetic analysis of hydrogen transfer reactions from dietary polyphenols to the DPPH radical. J Agric Food Chem 2003; 51:615-22. [PMID: 12537431 DOI: 10.1021/jf025938l] [Citation(s) in RCA: 215] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Diphenylpicrylhydrazyl (DPPH) is widely used for quickly assessing the ability of polyphenols to transfer labile H atoms to radicals, a likely mechanism of antioxidant protection. This popular test generally pays no attention to the kinetics of H atom transfer, which however could be even more important than the total H-atom-donating capacities (stoichiometry, EC50) typically evaluated. In the present work, a series of dietary polyphenols belonging to the most representative families (flavonols from onion, flavanol monomers and oligomers from barley, and caffeic acid and caffeoyl esters from artichoke and endive) are characterized not only by their total stoichiometries (n(tot)) but also by their rate constants of first H atom abstraction by DPPH (k(1)), deduced from the kinetic analysis of the decay of the DPPH visible band following addition of the antioxidant. The mildly reactive DPPH radical allows a good discrimation between polyphenols, as demonstrated by the relatively large ranges of k(1) (ca. 400-5000 M(-)(1) s(-)(1)) and n(tot) (ca. 1-5) values typically measured with antioxidants having a single polyphenolic nucleus. With antioxidants displaying more than one polyphenolic nucleus (procyanidin oligomers, dicaffeoyl esters), the kinetic analysis makes it possible to demonstrate significant differences in reactivity between the subunits (two distinct k(1) values whose ratio lies in the range 3-10) and nonadditive stoichiometries.
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Affiliation(s)
- Pascale Goupy
- UMR A 408 INRA-Université d'Avignon, Site Agroparc, Domaine St-Paul, 84914 Avignon Cedex 9, France
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