Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic

Physicochemical and emulsifying properties of a novel exudate gum from Prosopis alba (G) were assessed in comparison with the well-known arabic gum (GA). Compositional analysis, intrinsic viscosity and structural characterization as well as gum emulsifying properties (evaluated in terms of mean drop...

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Detalles Bibliográficos
Autores principales:	Martínez, María Julia, Mazzobre, María Florencia
Publicado:	2016
Materias:	Emulsifying properties Exudate gum Interfacial activity Prosopis alba
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0268005X_v56_n_p245_Vasile http://hdl.handle.net/20.500.12110/paper_0268005X_v56_n_p245_Vasile
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0268005X_v56_n_p245_Vasile
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spelling	paper:paper_0268005X_v56_n_p245_Vasile2023-06-08T15:24:00Z Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic Martínez, María Julia Mazzobre, María Florencia Emulsifying properties Exudate gum Interfacial activity Prosopis alba Physicochemical and emulsifying properties of a novel exudate gum from Prosopis alba (G) were assessed in comparison with the well-known arabic gum (GA). Compositional analysis, intrinsic viscosity and structural characterization as well as gum emulsifying properties (evaluated in terms of mean droplet size distribution of o/w emulsions, ζ-potential, polidispersity and creaming indexes), were performed and related to the dynamic interfacial tension and rheological behavior of the films formed at oil/water interface. Both gums closely resemble in composition with carbohydrates representing the higher fraction (62 and 65% d.b. for G and GA, respectively). The major difference was observed in the protein content which was higher in P. alba gum and largely explains its better interfacial properties. FTIR analysis further supported that the gums share essentially a similar chemical nature. P. alba gum was able to stabilize emulsions better than GA based on its lower droplet size distributions, higher ζ-potential, higher interfacial film elasticity and lower values of the polidispersity and creaming indexes during storage. Furthermore, the formation of stronger viscoelastic films at the oil/water interface as well as the charge distribution of the adsorbed G fractions could contribute to understand the higher stability of G emulsions. Present results provide the first approach to the composition of P. alba gum and evidence its similar or even better emulsifying properties than GA. © 2015 Elsevier Ltd. Fil:Martinez, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mazzobre, M.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0268005X_v56_n_p245_Vasile http://hdl.handle.net/20.500.12110/paper_0268005X_v56_n_p245_Vasile
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Emulsifying properties Exudate gum Interfacial activity Prosopis alba
spellingShingle	Emulsifying properties Exudate gum Interfacial activity Prosopis alba Martínez, María Julia Mazzobre, María Florencia Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
topic_facet	Emulsifying properties Exudate gum Interfacial activity Prosopis alba
description	Physicochemical and emulsifying properties of a novel exudate gum from Prosopis alba (G) were assessed in comparison with the well-known arabic gum (GA). Compositional analysis, intrinsic viscosity and structural characterization as well as gum emulsifying properties (evaluated in terms of mean droplet size distribution of o/w emulsions, ζ-potential, polidispersity and creaming indexes), were performed and related to the dynamic interfacial tension and rheological behavior of the films formed at oil/water interface. Both gums closely resemble in composition with carbohydrates representing the higher fraction (62 and 65% d.b. for G and GA, respectively). The major difference was observed in the protein content which was higher in P. alba gum and largely explains its better interfacial properties. FTIR analysis further supported that the gums share essentially a similar chemical nature. P. alba gum was able to stabilize emulsions better than GA based on its lower droplet size distributions, higher ζ-potential, higher interfacial film elasticity and lower values of the polidispersity and creaming indexes during storage. Furthermore, the formation of stronger viscoelastic films at the oil/water interface as well as the charge distribution of the adsorbed G fractions could contribute to understand the higher stability of G emulsions. Present results provide the first approach to the composition of P. alba gum and evidence its similar or even better emulsifying properties than GA. © 2015 Elsevier Ltd.
author	Martínez, María Julia Mazzobre, María Florencia
author_facet	Martínez, María Julia Mazzobre, María Florencia
author_sort	Martínez, María Julia
title	Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
title_short	Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
title_full	Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
title_fullStr	Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
title_full_unstemmed	Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic
title_sort	physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (prosopis alba) in comparison with gum arabic
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0268005X_v56_n_p245_Vasile http://hdl.handle.net/20.500.12110/paper_0268005X_v56_n_p245_Vasile
work_keys_str_mv	AT martinezmariajulia physicochemicalinterfacialandemulsifyingpropertiesofanonconventionalexudategumprosopisalbaincomparisonwithgumarabic AT mazzobremariaflorencia physicochemicalinterfacialandemulsifyingpropertiesofanonconventionalexudategumprosopisalbaincomparisonwithgumarabic
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Physicochemical, interfacial and emulsifying properties of a non-conventional exudate gum (Prosopis alba) in comparison with gum arabic

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