000069784 001__ 69784
000069784 005__ 20200108100342.0
000069784 0247_ $$2doi$$a10.3389/fchem.2018.00020
000069784 0248_ $$2sideral$$a104954
000069784 037__ $$aART-2018-104954
000069784 041__ $$aeng
000069784 100__ $$aBueno, M.
000069784 245__ $$aFormation and Accumulation of Acetaldehyde and Strecker Aldehydes during Red Wine Oxidation
000069784 260__ $$c2018
000069784 5060_ $$aAccess copy available to the general public$$fUnrestricted
000069784 5203_ $$aThe main aim of the present work is to study the accumulation of acetaldehyde and Strecker aldehydes (isobutyraldehyde, 2-methylbutanal, isovaleraldehyde, methional, phenylacetaldehyde) during the oxidation of red wines, and to relate the patterns of accumulation to the wine chemical composition. For that, eight different wines, extensively chemically characterized, were subjected at 25 degrees C to three different controlled O-2 exposure conditions: low (10 mg L-1) and medium or high (the stoichiometrically required amount to oxidize all wine total SO2 plus 18 or 32 mg L-1, respectively). Levels of volatile aldehydes and carbonyls were then determined and processed by different statistical techniques. Results showed that young wines (<2 years-old bottled wines) hardly accumulate any acetaldehyde regardless of the O-2 consumed. In contrast, aged wines (>3 years-old bottled wines) accumulated acetaldehyde while their content in SO2 was not null, and the aged wine containing lowest polyphenols accumulated it throughout the whole process. Models suggest that the ability of a wine to accumulate acetaldehyde is positively related to its content in combined SO2, in epigallocatechin and to the mean degree of polymerization, and negatively to its content in Aldehyde Reactive Polyphenols (ARPs) which, attending to our models, are anthocyanins and small tannins. The accumulation of Strecker aldehydes is directly proportional to the wine content in the amino acid precursor, being the proportionality factor much higher for aged wines, except for phenylacetaldehyde, for which the opposite pattern was observed. Models suggest that non-aromatic Strecker aldehydes share with acetaldehyde a strong affinity toward ARPs and that the specific pattern of phenylacetaldehyde is likely due to a much reduced reactivity toward ARPs, to the possibility that diacetyl induces Strecker degradation of phenyl alanine and to the potential higher reactivity of this amino acid to some quinones derived from catechin. All this makes that this aldehyde accumulates with intensity, particularly in young wines, shortly after wine SO2 is depleted.
000069784 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T53$$9info:eu-repo/grantAgreement/ES/MINECO/AGL2014-59840$$9info:eu-repo/grantAgreement/ES/MINECO/RTC-2015-3379$$9info:eu-repo/grantAgreement/ES/MINECO/RTC-2016-4935-2
000069784 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000069784 590__ $$a3.782$$b2018
000069784 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b53 / 172 = 0.308$$c2018$$dQ2$$eT1
000069784 592__ $$a1.018$$b2018
000069784 593__ $$aChemistry (miscellaneous)$$c2018$$dQ1
000069784 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000069784 700__ $$aMarrufo-Curtido, A.$$uUniversidad de Zaragoza
000069784 700__ $$0(orcid)0000-0001-7931-574X$$aCarrascon, V.
000069784 700__ $$aFernandez-Zurbano, P.
000069784 700__ $$0(orcid)0000-0003-1658-1770$$aEscudero, A.$$uUniversidad de Zaragoza
000069784 700__ $$0(orcid)0000-0002-4353-2483$$aFerreira, V.$$uUniversidad de Zaragoza
000069784 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica
000069784 773__ $$g6 (2018), 20 [19 pp]$$pFront. chem.$$tFrontiers in chemistry$$x2296-2646
000069784 8564_ $$s545154$$uhttp://zaguan.unizar.es/record/69784/files/texto_completo.pdf$$yVersión publicada
000069784 8564_ $$s11397$$uhttp://zaguan.unizar.es/record/69784/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000069784 909CO $$ooai:zaguan.unizar.es:69784$$particulos$$pdriver
000069784 951__ $$a2020-01-08-09:28:38
000069784 980__ $$aARTICLE