dc.creatorRodriguez E.B.
dc.creatorRodriguez-Amaya D.B.
dc.date2007
dc.date2015-06-30T18:47:10Z
dc.date2015-11-26T14:35:39Z
dc.date2015-06-30T18:47:10Z
dc.date2015-11-26T14:35:39Z
dc.date.accessioned2018-03-28T21:39:04Z
dc.date.available2018-03-28T21:39:04Z
dc.identifier
dc.identifierFood Chemistry. , v. 101, n. 2, p. 563 - 572, 2007.
dc.identifier3088146
dc.identifier10.1016/j.foodchem.2006.02.015
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33748293152&partnerID=40&md5=91cae590093b66aa94167ebc18fe590c
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/104770
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/104770
dc.identifier2-s2.0-33748293152
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1248434
dc.descriptionIt is generally accepted that oxidation of carotenoids begins with epoxidation and cleavage to apocarotenals. However, systematic studies to demonstrate occurrence of these reactions are lacking. In this study, the products formed by epoxidation with m-chloroperbenzoic acid (MCPBA), oxidative cleavage with KMnO4 and autoxidation in model systems, in the presence and absence of light, at ambient condition were identified. The presence of oxidation products was also verified in processed products. β-carotene-5,6-epoxide, β-carotene-5,8-epoxide, β-carotene-5,6,5′,6′-diepoxide, β-carotene-5,6,5′,8′-diepoxide and β-carotene 5,8,5′,8′-diepoxide were formed by the reaction of β-carotene with MCPBA. The oxidation products with KMnO4 were identified as β-apo-8′-carotenal, β-apo-10′-carotenal, β-apo-12′-carotenal, β-apo-14′-carotenal and β-apo-15-carotenal, along with semi-β-carotenone and monohydroxy-β-carotene-5,8-epoxide. Except for β-carotene 5,6,5′,6′-diepoxide, these products were detected in the model systems. Some of these products were also found in mango juice, acerola juice and dried apricot. Increased Z-isomerization was also observed and Z-isomers of the oxidation products were detected. © 2006 Elsevier Ltd. All rights reserved.
dc.description101
dc.description2
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dc.languageen
dc.publisher
dc.relationFood Chemistry
dc.rightsfechado
dc.sourceScopus
dc.titleFormation Of Apocarotenals And Epoxycarotenoids From β-carotene By Chemical Reactions And By Autoxidation In Model Systems And Processed Foods
dc.typeArtículos de revistas


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