Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization
Physico-chemical and rheological characterization of the gum extracted from the endosperm of vinal (Prosopis ruscifolia) seeds was performed. The CG-MS analysis revealed that vinal gum is a galactomannan with a mannose/galactose ratio of 1.6, with traces of arabinose and glucose residues. The struct...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0268005X_v51_n_p495_Busch |
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todo:paper_0268005X_v51_n_p495_Busch2023-10-03T15:13:47Z Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization Busch, V.M. Kolender, A.A. Santagapita, P.R. Buera, M.P. Guar gum Hydrocolloids Non-traditional sources Prosopis Rheology Thickener agent Cyamopsis tetragonoloba Prosopis Prosopis ruscifolia Physico-chemical and rheological characterization of the gum extracted from the endosperm of vinal (Prosopis ruscifolia) seeds was performed. The CG-MS analysis revealed that vinal gum is a galactomannan with a mannose/galactose ratio of 1.6, with traces of arabinose and glucose residues. The structure was further confirmed by 13C NMR which showed several similarities between vinal gum and guar gum spectra. The viscosity molecular weight was 1.43±0.04·106Da (obtained from Huggins plot) and the average number molecular weight was 0.7·105Da. Shear continuous rheology studies showed a shear thinning behavior at concentrations higher than 0.04% (w/v) of vinal gum and an apparent viscosity slightly lower than that of guar gum at the same concentration. Mechanical spectra revealed that vinal gum has a typical macromolecular solution behavior with the moduli crossing point that characterized semi-diluted (0.16-0.3% w/v) gum solutions. The present work provides structural, physicochemical and rheological information of a new galactomannan from an abundant and available non-traditional source, being a starting point for food, pharmaceutical or other industrial potential applications of vinal gum. © 2015 Elsevier Ltd. Fil:Kolender, A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Santagapita, P.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Buera, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0268005X_v51_n_p495_Busch |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Guar gum Hydrocolloids Non-traditional sources Prosopis Rheology Thickener agent Cyamopsis tetragonoloba Prosopis Prosopis ruscifolia |
| spellingShingle |
Guar gum Hydrocolloids Non-traditional sources Prosopis Rheology Thickener agent Cyamopsis tetragonoloba Prosopis Prosopis ruscifolia Busch, V.M. Kolender, A.A. Santagapita, P.R. Buera, M.P. Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| topic_facet |
Guar gum Hydrocolloids Non-traditional sources Prosopis Rheology Thickener agent Cyamopsis tetragonoloba Prosopis Prosopis ruscifolia |
| description |
Physico-chemical and rheological characterization of the gum extracted from the endosperm of vinal (Prosopis ruscifolia) seeds was performed. The CG-MS analysis revealed that vinal gum is a galactomannan with a mannose/galactose ratio of 1.6, with traces of arabinose and glucose residues. The structure was further confirmed by 13C NMR which showed several similarities between vinal gum and guar gum spectra. The viscosity molecular weight was 1.43±0.04·106Da (obtained from Huggins plot) and the average number molecular weight was 0.7·105Da. Shear continuous rheology studies showed a shear thinning behavior at concentrations higher than 0.04% (w/v) of vinal gum and an apparent viscosity slightly lower than that of guar gum at the same concentration. Mechanical spectra revealed that vinal gum has a typical macromolecular solution behavior with the moduli crossing point that characterized semi-diluted (0.16-0.3% w/v) gum solutions. The present work provides structural, physicochemical and rheological information of a new galactomannan from an abundant and available non-traditional source, being a starting point for food, pharmaceutical or other industrial potential applications of vinal gum. © 2015 Elsevier Ltd. |
| format |
JOUR |
| author |
Busch, V.M. Kolender, A.A. Santagapita, P.R. Buera, M.P. |
| author_facet |
Busch, V.M. Kolender, A.A. Santagapita, P.R. Buera, M.P. |
| author_sort |
Busch, V.M. |
| title |
Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| title_short |
Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| title_full |
Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| title_fullStr |
Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| title_full_unstemmed |
Vinal gum, a galactomannan from Prosopis ruscifolia seeds: Physicochemical characterization |
| title_sort |
vinal gum, a galactomannan from prosopis ruscifolia seeds: physicochemical characterization |
| url |
http://hdl.handle.net/20.500.12110/paper_0268005X_v51_n_p495_Busch |
| work_keys_str_mv |
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