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Mostrando ítems 1-10 de 16
Artículo
Gellan gum fluid gels: influence of the nature and concentration of gel-promoting ions on rheological properties
(Springer, 2018-11)
Low-acyl gellan gum fluid gels were obtained using two different gel-promoting cations under the same processing conditions, and their rheological properties were investigated. For that reason, stress and frequency sweep ...
Artículo
Rheological properties and physical stability of ecological emulsions stabilized by a surfactant derived from cocoa oil and high pressure homogenization
(CSIC, 2015)
The goal of this work was to investigate the influence of the emulsification method on the rheological properties, droplet size distribution and physical stability of O/W green emulsions formulated with an eco-friendly ...
Artículo
Effect of temperature and shear on the microstructure of a microbial polysaccharide secreted by Sphingomonas species in aqueous solution
(Elsevier, 2018-10-15)
Diutan gum is a biological polymer produced by Sphingomonas sp. In aqueous solution it shows gel-like structure under quiescent conditions. However, the flow-induced evolution of its viscoelastic properties and its ...
Artículo
A Comparison of the Effect of Temperature on the Rheological Properties of Diutan and Rhamsan Gum Aqueous Solutions
(MDPI, 2019)
The rheological properties exhibited by gums make its use in applications interesting, such as foods, cosmetics, enhanced oil recovery, or constructions materials. Regardless of application field, the effect of temperature ...
Artículo
Rheology, microstructural characterization and physical stability of W/α-PINENE/W emulsions formulated with copolymers
(Elsevier, 2018)
In this work the microstructure and the physical stability of emulsions containing α-pinene and gellan gum were studied as a function of Atlas™ G-5000/Atlox™ 4912 copolymer mass ratio, R, used as emulsifier. In order to ...
Artículo
Influence of the welan gum biopolymer concentration on the rheological properties, droplet size distribution and physical stability of thyme oil/W emulsions
(Elsevier, 2019-07)
The objective of this work is to obtain a stable and natural antimicrobial delivery system. Thus, the effect of the addition of a natural polysaccharide such as welan gum on the linear viscoelastic properties, flow behaviour, ...
Artículo
Flow, dynamic viscoelastic and creep properties of a biological polymer produced by Sphingomonas sp. as affected by concentration
(Elsevier, 2019-03-15)
In this work, the influence of the concentration on the flow behaviour, dynamic viscoelastic and creep properties of diutan gum in aqueous solution was investigated. Diutan gum is a biopolymer which belongs to the sphingans ...
Artículo
Transiciones microestructurales inducidas por cizalla en sistemas acuosos de un tensioactivo catiónico tipo esterqua
(Instituto Químico de Sarriá: Asociación de Químicos e Ingenieros, 2010)
Se presenta un estudio basado en técnicas reológicas y de microscopía electrónica de barrido de bajas temperaturas (cryo-SEM) sobre los cambios de microestructura provocados por el flujo en cizalla de dispersiones acuosas ...
Artículo
Influencia de la adición de glicerol en la distribución de tamaños de gotas, diámetros medios y estabilidad física de emulsiones O/W ecológicas procesadas con tecnología Microfluidizer
(Asociación de Químicos e Ingenieros del Instituto Químico de Sarriá, 2018)
The aim of this work was to investigate the influence of the pressure ( 0 psi and 15000 psi) and the number of passes (0,1,2 and 3) through a high pressure homogenizer with Microfluidizer technology on the droplet ...
Artículo
Aplicación de alta presión sobre disoluciones acuosas de goma diutan: influencia sobre las propiedades reológicas
(Asociación de Químicos e Ingenieros del Instituto Químico de Sarriá, 2017)
En este trabajo se estudia el efecto de aplicar alta presión sobre el comportamiento reológico de disoluciones acuosas de goma diutan con el objeto de ampliar su uso potencial. Muestras de goma diutan sin tratar y ...