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Influence of intrinsic factors on conventional wine protein stability tests

2000Journal article Open access
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dc.contributor.authorSarmento, M.R.
dc.contributor.authorOliveira, J.C.
dc.contributor.authorSlatner, M.
dc.contributor.authorBoulton, R.B.
dc.date.accessioned2011-10-22T17:24:10Z
dc.date.available2011-10-22T17:24:10Z
dc.date.issued2000
dc.description.abstractThe influence of intrinsic factors on the results of ethanol, tannin and heat tests, routinely used to assess wine protein stability, was studied. Experiments were performed on 23 Portuguese and Austrian wines. The factors considered were total protein content, pH, ethanol content and the amount of several relevant cations (calcium, iron, copper, sodium and potassium). The protein pro®les were analysed by HPLC fractionation. The heat test was a good indicator of total protein content while the ethanol and the tannin tests showed signi®cant interference by the other factors. A factorial design at two levels in selected samples was also performed to assess the influence of pH, storage temperature, tannin concentration and ethanol concentration on the development of turbidity. Results indicated that ethanol content had no significant infuence, and that pH and storage temperature had a significant infuence, though only when tannin was added.por
dc.identifier.citationSARMENTO, M. R....[et al] - Influence of intrinsic factors on conventional wine protein stability tests. Food Control. ISSN 0956-7135. Vol. 11 (2000), p. 423-432por
dc.identifier.urihttp://hdl.handle.net/10400.14/6861
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversiondoi:10.1016/S0956-7135(00)00004-9por
dc.subjectProtein precipitationpor
dc.subjectWine protein profilepor
dc.subjectWine storagepor
dc.titleInfluence of intrinsic factors on conventional wine protein stability testspor
dc.typejournal article
dspace.entity.typePublication
person.familyNameOliveira
person.givenNameJorge
person.identifier.orcid0000-0002-0680-6174
person.identifier.ridC-2642-2008
person.identifier.scopus-author-id7202452289
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication5227bcfa-cb99-407e-a2ef-3f4eb86d4243
relation.isAuthorOfPublication.latestForDiscovery5227bcfa-cb99-407e-a2ef-3f4eb86d4243

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