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April 16, 2015 (v1)PublicationUploaded on: March 27, 2023
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May 24, 2019 (v1)Publication
Los detergentes gel poseen ciertas ventajas frente a los detergentes en polvo que los hacen muy interesantes, como facilidad en el transporte, alta eficiencia considerando el número de lavados por botella y el uso razonado de agua y embalaje. Para comprobar si un determinado producto tiene comportamiento gel, se realizan estudios reológicos;...
Uploaded on: March 27, 2023 -
January 14, 2015 (v1)Publication
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Uploaded on: March 25, 2023 -
December 5, 2022 (v1)Publication
Many lipophilic active substances, such as β-carotene, are sensitive to chemical oxidation. A strategy to protect these ingredients is encapsulation using nanoemulsions. This work analyzes the relationship between the physical stability and encapsulation efficiency of nanoemulsions based on linseed oil. The role of two different...
Uploaded on: March 24, 2023 -
June 10, 2022 (v1)Publication
The objective of this work was to develop emulsions containing lemongrass essential oil and Appyclean 6552 (emulsifier). The emulsions were prepared using two different processing techniques: microfluidization and sonication. A decrease in Sauter diameter with ultrasonic power and residence time in sonicator was observed, reaching values of 195...
Uploaded on: March 25, 2023 -
February 2, 2023 (v1)Publication
A very positive and effective approach to tuning the mechanical properties of polymers has been the development of composites. This paper deals with novel biocomposite hydrogels composed by two biocompatible materials: welan gum as biopolymer matrix and sepiolite as filler. Welan gum content was studied as a tuning parameter to control the...
Uploaded on: February 23, 2023 -
April 22, 2019 (v1)Publication
A (model) composite system for drug delivery was developed based on a thermoresponsive hydrogel loaded with microparticles. We used Pluronic F127 hydrogel as the continuous phase and alginate microparticles as the dispersed phase of this composite system. It is well known that Pluronic F127 forms a gel when added to water in an appropriate...
Uploaded on: March 27, 2023 -
May 30, 2019 (v1)Publication
Las emulsiones múltiples tienen multitud de aplicaciones en la industria alimentaria, cosméticos, microreactores controlados, síntesis de microcápsulas y sistemas de liberación controlada. Se puede conseguir un gran control de la producción de gotas en emulsiones dobles usando técnicas microfluídicas. En este trabajo se desarrollaron emulsiones...
Uploaded on: March 27, 2023 -
December 14, 2016 (v1)Publication
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 de un tensioactivo catiónico tipo esterquat. Se comparan micrografías de cryo-SEM y las respuestas bajo cizalla oscilatoria...
Uploaded on: March 25, 2023 -
September 10, 2020 (v1)Publication
Emulsions can be used as delivery systems for bioactive ingredients for their incorporation in food products. Essential oils are natural compounds found in plants that present antioxidant and antimicrobial activity. Therefore, the main goal of this work was to develop emulsions, containing mandarin essential oil stabilized by two food-grade...
Uploaded on: December 4, 2022 -
July 8, 2020 (v1)Publication
In this paper the rheological characterization of Pluronic/water systems filled with alginate microparticles is presented. The rheological characterization of the Pluronic/water systems allowed for the choice of the best Pluronic concentration taking into account its applications as injectable hydrogels for tissue repair. The effect on the...
Uploaded on: December 5, 2022 -
January 22, 2019 (v1)Publication
This contribution deals with the development of emulsions formulated using thyme essential oil and a new biomass-derived surfactant. In addition, this work extends our knowledge concerning the factors that can influence stability and droplet size distributions of microfluidized emulsions, such as the geometry of the rotor–stator used and the...
Uploaded on: March 27, 2023 -
May 22, 2019 (v1)Publication
Different continuous phases formulated with ecofriendly ingredients such as AMIDET®N, an ecological surfactant, as well as welan and rhamsan gums were developed. An experimental design strategy was been in order to study the influence of the ratio of these two polysaccharides and the homogenization pressure applied in a microfluidizer on the...
Uploaded on: December 5, 2022 -
December 16, 2016 (v1)Publication
Se estudian las propiedades reológicas de una suspoemulsión comercial para uso agroquímico. Se comparan los resultados obtenidos mediante curvas de flujo y ensayos en cizalla oscilatoria de baja amplitud para cinco temperaturas distintas en el intervalo de 5 a 25ºC. Las curvas de flujo, ponen de manifiesto que la suspoemulsión se caracteriza...
Uploaded on: March 27, 2023 -
September 3, 2019 (v1)Publication
Se han estudiado las propiedades reológicas, la estabilidad física y la microestructura de suspensiones de una sílice hidrofílica (Aerosil 200) en agua con potencial aplicación como fase continua de emulsiones ecológicas. Además, se analizó la influencia de la adición de Amidet N, un tensioactivo no iónico derivado del aceite de Colza, en las...
Uploaded on: December 5, 2022 -
September 3, 2019 (v1)PublicationMethodology for development of ecological emulsions formulated with green solvents or essential oils
Las emulsiones ecológicas se formulan y preparan idealmente siguiendo los principios del desarrollo sostenible o la química verde. Estas emulsiones verdes poseen un gran número de aplicaciones, ya que por ejemplo son utilizadas en la industria alimentaria. La industria química está mostrando especial atención a la sustitución de los disolventes...
Uploaded on: December 4, 2022 -
January 24, 2018 (v1)Publication
La estrategia actual de investigación del grupo de Reología Aplicada y Tecnología de Coloides de la Universidad de Sevilla se centra en tres objetivos. Los proyectos de investigación en Ingeniería Química desarrollados en Europa durante la primera parte del siglo XXI deben tener como objetivo a) actualizar la información acerca del estado del...
Uploaded on: March 27, 2023