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Chemometric analysis of the volatile fraction evolution of Portuguese beer under shelf storage conditions

2015Journal article Open access
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dc.contributor.authorRendall, Ricardo
dc.contributor.authorReis, Marco S.
dc.contributor.authorPereira, Ana Cristina
dc.contributor.authorPestana, Cristina
dc.contributor.authorPereira, Vanda
dc.contributor.authorMarques, José Carlos
dc.date.accessioned2021-11-26T12:27:46Z
dc.date.available2021-11-26T12:27:46Z
dc.date.issued2015
dc.description.abstractIn this work we present a multivariate statistical analysis of the evolution of the volatile fraction of Portuguese beer over an extended period of 1 year under standard shelf storage conditions, using gas chromatography coupled with mass spectrometry (GC–MS). A systematic methodology is proposed for detecting the onset of meaningful changes in chemical composition during shelf storage and to monitor its evolution along time. We also put forward and discuss chemometric procedures for analyzing the contributions of different chemical com ponents in the definition of dynamic ageing trends. In summary, the chemometric analysis reveals that the chem ical composition of beer presents a statistically meaningful deviation from the reference scenario after a period of 7 months, although the deviation trend has its onset during the 6th month. The analysis performed also under lines the limitations of current variable contribution methods, and an alternative procedure was proposed based on the analysis in the original domain which finally led to a consistent and interpretable clustering structure of the volatile fraction compounds. Esters and higher alcohol compounds stand up on a cluster arrangement sug gesting that their strict control can effectively point out meaningful changes on beer aroma. Organic acids, name ly caprylic, capric and acetic acids can also be very helpful in that sensept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRendall, R., Reis, M. S., Pereira, A. C., Pestana, C., Pereira, V., & Marques, J. C. (2015). Chemometric analysis of the volatile fraction evolution of Portuguese beer under shelf storage conditions. Chemometrics and Intelligent Laboratory Systems, 142, 131-142. https://doi.org/10.1016/j.chemolab.2015.01.015pt_PT
dc.identifier.doi10.1016/j.chemolab.2015.01.015pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3858
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectLager beerpt_PT
dc.subjectVolatile profilept_PT
dc.subjectChemometricspt_PT
dc.subjectPrincipal component analysispt_PT
dc.subjectClusteringpt_PT
dc.subjectVariables' contributionspt_PT
dc.subject.pt_PT
dc.subjectEscola Superior de Tecnologias e Gestãopt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleChemometric analysis of the volatile fraction evolution of Portuguese beer under shelf storage conditionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage142pt_PT
oaire.citation.startPage131pt_PT
oaire.citation.titleChemometrics and Intelligent Laboratory Systemspt_PT
oaire.citation.volume142pt_PT
person.familyNameReis
person.familyNamePereira
person.familyNamePereira
person.familyNameMarques
person.givenNameMarco
person.givenNameAna Cristina
person.givenNameVanda
person.givenNameJose C
person.identifier1374847
person.identifier41146
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person.identifier.orcid0000-0002-4997-8865
person.identifier.orcid0000-0003-3097-7704
person.identifier.orcid0000-0003-0772-8953
person.identifier.orcid0000-0002-4832-4341
person.identifier.ridG-7266-2019
person.identifier.ridA-7681-2015
person.identifier.ridJ-8697-2013
person.identifier.ridF-3014-2010
person.identifier.scopus-author-id9273948800
person.identifier.scopus-author-id56483357000
person.identifier.scopus-author-id36857887700
person.identifier.scopus-author-id7203033313
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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