Publicação
Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum
| Resumo: | The rheological behaviour, under steady and dynamic shear and extensional conditions, of two nonconventional galactomannans isolated from Gleditsia triacanthos and Sophora japonica is determined and compared to those of locust bean gum and guar gum. The studied galactomannans exhibit shear-thinning behaviour in the range of concentrations and shear rates evaluated. For similar concentrations and shear rates, the guar gum exhibits the highest viscosities. Experimental data in steady shear was correlated with the Cross model, which provided a good description of viscosity shear rate data. Under oscillatory shear, all gum solutions exhibited a behaviour typical of random-coil polysaccharide solutions. The extensional rheology experiments showed that by increasing the polymer concentration and decreasing the temperature, the relaxation times, elastic moduli and rupture times increase. These findings lead to the conclusion that G. triacanthos and S. japonica galactomannans can be used as efficient thickening hydrocolloids as alternative to conventional galactomannans. |
|---|---|
| Autores principais: | Bourbon, A. I. |
| Outros Autores: | Pinheiro, A. C.; Ribeiro, Clara; Miranda, Cândida; Maia, J. M.; Teixeira, J. A.; Vicente, A. A. |
| Assunto: | Non-traditional galactomannans Shear rheology Extensional rheology |
| Ano: | 2010 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1866876742184992768 |
|---|---|
| author | Bourbon, A. I. |
| author2 | Pinheiro, A. C. Ribeiro, Clara Miranda, Cândida Maia, J. M. Teixeira, J. A. Vicente, A. A. |
| author2_role | author author author author author author |
| author_facet | Bourbon, A. I. Pinheiro, A. C. Ribeiro, Clara Miranda, Cândida Maia, J. M. Teixeira, J. A. Vicente, A. A. |
| author_role | author |
| contributor_name_str_mv | Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Bourbon, A. I.\"},{\"Person.name\":\"Pinheiro, A. C.\"},{\"Person.name\":\"Ribeiro, Clara\"},{\"Person.name\":\"Miranda, Cândida\"},{\"Person.name\":\"Maia, J. M.\"},{\"Person.name\":\"Teixeira, J. A.\"},{\"Person.name\":\"Vicente, A. A.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Bourbon, A. I. Pinheiro, A. C. Ribeiro, Clara Miranda, Cândida Maia, J. M. Teixeira, J. A. Vicente, A. A. |
| datacite.date.Accepted.fl_str_mv | 2010-03-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2010-01-15T12:14:04Z |
| datacite.date.embargoed.fl_str_mv | 2010-01-15T12:14:04Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Non-traditional galactomannans Shear rheology Extensional rheology |
| datacite.titles.title.fl_str_mv | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| dc.contributor.none.fl_str_mv | Universidade do Minho |
| dc.creator.none.fl_str_mv | Bourbon, A. I. Pinheiro, A. C. Ribeiro, Clara Miranda, Cândida Maia, J. M. Teixeira, J. A. Vicente, A. A. |
| dc.date.Accepted.fl_str_mv | 2010-03-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2010-01-15T12:14:04Z |
| dc.date.embargoed.fl_str_mv | 2010-01-15T12:14:04Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/10086 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Non-traditional galactomannans Shear rheology Extensional rheology |
| dc.title.fl_str_mv | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The rheological behaviour, under steady and dynamic shear and extensional conditions, of two nonconventional galactomannans isolated from Gleditsia triacanthos and Sophora japonica is determined and compared to those of locust bean gum and guar gum. The studied galactomannans exhibit shear-thinning behaviour in the range of concentrations and shear rates evaluated. For similar concentrations and shear rates, the guar gum exhibits the highest viscosities. Experimental data in steady shear was correlated with the Cross model, which provided a good description of viscosity shear rate data. Under oscillatory shear, all gum solutions exhibited a behaviour typical of random-coil polysaccharide solutions. The extensional rheology experiments showed that by increasing the polymer concentration and decreasing the temperature, the relaxation times, elastic moduli and rupture times increase. These findings lead to the conclusion that G. triacanthos and S. japonica galactomannans can be used as efficient thickening hydrocolloids as alternative to conventional galactomannans. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://prod-dspace.uminho.pt/bitstreams/52038f98-d8c6-4f82-9384-009f2ceed529/download |
| id | rum_cd6117b95196a4e4c86f79a49359aef2 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/10086 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/10086 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Bourbon, A. I. Pinheiro, A. C. Ribeiro, Clara Miranda, Cândida Maia, J. M. Teixeira, J. A. Vicente, A. A. |
| publishDate | 2010 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierporThe rheological behaviour, under steady and dynamic shear and extensional conditions, of two nonconventional galactomannans isolated from Gleditsia triacanthos and Sophora japonica is determined and compared to those of locust bean gum and guar gum. The studied galactomannans exhibit shear-thinning behaviour in the range of concentrations and shear rates evaluated. For similar concentrations and shear rates, the guar gum exhibits the highest viscosities. Experimental data in steady shear was correlated with the Cross model, which provided a good description of viscosity shear rate data. Under oscillatory shear, all gum solutions exhibited a behaviour typical of random-coil polysaccharide solutions. The extensional rheology experiments showed that by increasing the polymer concentration and decreasing the temperature, the relaxation times, elastic moduli and rupture times increase. These findings lead to the conclusion that G. triacanthos and S. japonica galactomannans can be used as efficient thickening hydrocolloids as alternative to conventional galactomannans.application/pdfporCharacterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gumBourbon, A. I.Pinheiro, A. C.Ribeiro, ClaraMiranda, CândidaMaia, J. M.Teixeira, J. A.Vicente, A. A.HostingInstitutionOrganizationalUniversidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf0268-005XDOIIsPartOf10.1016/j.foodhyd.2009.09.0042010-01-15T12:14:04Z2010-032010-03-01T00:00:00ZHandlehttps://hdl.handle.net/1822/10086http://purl.org/coar/access_right/c_abf2open accessNon-traditional galactomannansShear rheologyExtensional rheology3294134 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://prod-dspace.uminho.pt/bitstreams/52038f98-d8c6-4f82-9384-009f2ceed529/download |
| spellingShingle | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum Bourbon, A. I. Non-traditional galactomannans Shear rheology Extensional rheology |
| status | SINGLETON |
| subject.fl_str_mv | Non-traditional galactomannans Shear rheology Extensional rheology |
| title | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| title_full | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| title_fullStr | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| title_full_unstemmed | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| title_short | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| title_sort | Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology : comparison with guar gum and locust bean gum |
| topic | Non-traditional galactomannans Shear rheology Extensional rheology |
| topic_facet | Non-traditional galactomannans Shear rheology Extensional rheology |
| url | https://hdl.handle.net/1822/10086 |
| visible | 1 |