Structure formation in sugar containing pectin gels - Influence of gel composition and cooling rate on the gelation of non-amidated and amidated low-methoxylated pectin

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dc.contributor.authorKastner, Hanna
dc.contributor.authorEinhorn-Stoll, Ulrike
dc.contributor.authorDrusch, Stephan
dc.date.accessioned2020-03-02T14:58:53Z
dc.date.available2020-03-02T14:58:53Z
dc.date.issued2017-06-21
dc.description.abstractGel structure formation and gel properties of low-methoxyl pectin (LMP) and low-methoxyl amidated pectin (LMAP) with similar degree of methoxylation have been investigated by oscillatory rheological measurements. The gelling process was examined in a sugar-acid environment matching the conditions in jams and jellies. Factors studied included cooling rate, calcium content and pH. Parameters derived from the rheological measurements comprised the gel point, structuring velocity, initial and critical structuring temperature, average structuring developing rate and loss factor (tanδend). The influence of the cooling rate on the gelling process of LMP was moderate and the influence on the final gel properties was significant, tanδend decreased with increasing cooling rate. The calcium content significantly affected the structuring process of LMAP and the final gel properties. At high calcium content, the gelling process started at a higher temperature but the resulting gels were less strong. The pH had a significant but partly opposite effect on the gelation of LMP as well as LMAP. The differences in gelation behavior between LMP and LMAP can be explained by the lower number of available blocks of free carboxyl groups in LMAP as well as by the formation of additional hydrogen bonds through the amide groups.en
dc.identifier.eissn1873-7137
dc.identifier.issn0268-005X
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/10873
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-9769
dc.language.isoenen
dc.relation.ispartof10.14279/depositonce-8615
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subject.ddc664 Lebensmitteltechnologiede
dc.subject.otherpectinen
dc.subject.othergelling processen
dc.subject.otherrheologyen
dc.subject.othercooling rateen
dc.subject.othercalciumen
dc.subject.otherpHen
dc.titleStructure formation in sugar containing pectin gels - Influence of gel composition and cooling rate on the gelation of non-amidated and amidated low-methoxylated pectinen
dc.typeArticleen
dc.type.versionacceptedVersionen
dcterms.bibliographicCitation.doi10.1016/j.foodhyd.2017.06.023en
dcterms.bibliographicCitation.journaltitleFood Hydrocolloidsen
dcterms.bibliographicCitation.originalpublishernameElsevieren
dcterms.bibliographicCitation.originalpublisherplaceAmsterdam [u.a.]en
dcterms.bibliographicCitation.pageend20en
dcterms.bibliographicCitation.pagestart13en
dcterms.bibliographicCitation.volume73en
tub.accessrights.dnbfreeen
tub.affiliationFak. 3 Prozesswissenschaften::Inst. Lebensmitteltechnologie und Lebensmittelchemie::FG Lebensmitteltechnologie und -materialwissenschaftende
tub.affiliation.facultyFak. 3 Prozesswissenschaftende
tub.affiliation.groupFG Lebensmitteltechnologie und -materialwissenschaftende
tub.affiliation.instituteInst. Lebensmitteltechnologie und Lebensmittelchemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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