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Impedimetric method for estimating the residual activity of freeze-dried Lactobacillus delbrueckii ssp. bulgaricus

2003Journal article Open access
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dc.contributor.authorCarvalho, A. Sofia
dc.contributor.authorSilva, Joana
dc.contributor.authorHo, Peter
dc.contributor.authorTeixeira, Paula
dc.contributor.authorMalcata, F. Xavier
dc.contributor.authorGibbs, Paul
dc.date.accessioned2011-10-22T12:38:17Z
dc.date.available2011-10-22T12:38:17Z
dc.date.issued2003
dc.description.abstractThe residual activity of Lactobacillus delbrueckii ssp. bulgaricus cultures was analysed using pH and various impedimetric methods (impedance detection time (IDT), conductance and capacitance) to quantify the loss in activity following freeze-drying. The large variation recorded in IDT values for similar levels of activity suggests that IDT is not an adequate parameter for estimating the culture's fermentative activity. Comparison of the impedance signals generated revealed that capacitance yields values that are more reproducible than those of conductance, and also gives a better correlation with pH. Statistical analysis (p<0.05) indicated that there are no significant differences between the capacitance and the pH method when attempting to estimate residual activity.por
dc.identifier.citationCARVALHO, A. Sofia ...[ et al.] - Impedimetric method for estimating the residual activity of freeze-dried Lactobacillus delbrueckii ssp. bulgaricus. International Dairy Journal. ISSN 0958-6946. Vol. 13, n.º 6 (2003) p. 463–468por
dc.identifier.urihttp://hdl.handle.net/10400.14/6818
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversiondoi:10.1016/S0958-6946(03)00049-9por
dc.subjectResidual activitypor
dc.subjectLactic acid bacteriapor
dc.subjectInstrumental methodspor
dc.titleImpedimetric method for estimating the residual activity of freeze-dried Lactobacillus delbrueckii ssp. bulgaricuspor
dc.typejournal article
dspace.entity.typePublication
person.familyNameSilva
person.familyNameTeixeira
person.familyNameMalcata
person.familyNameGibbs
person.givenNameJoana
person.givenNamePaula
person.givenNameFrancisco
person.givenNamePaul
person.identifier.ciencia-idB415-743D-D9F9
person.identifier.ciencia-id1B13-38A5-35F5
person.identifier.orcid0000-0003-3977-7418
person.identifier.orcid0000-0002-6296-5137
person.identifier.orcid0000-0003-3073-1659
person.identifier.orcid0000-0002-6580-4363
person.identifier.ridJ-8678-2014
person.identifier.scopus-author-id7403023130
person.identifier.scopus-author-id7005895206
person.identifier.scopus-author-id7102542478
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublicationb918d4a2-b9f9-4c56-8318-111625e4d58b
relation.isAuthorOfPublicationa06c00da-0e2f-4434-8ede-4d7b22c0dfe9
relation.isAuthorOfPublication218d85c8-40f4-42c0-9a47-4e8ad9f72a96
relation.isAuthorOfPublication.latestForDiscovery42069f79-2050-47f2-a42b-fab5c301e9a3

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