abstract

• The gelation process, elasticity, and mechanical recovery after shear were studied in mixed oleogels of ethylcellulose (EC), monoglycerides (MG), and candelilla wax (CW). EC oleogels produced without MG showed grainy texture due to incomplete dissolution of crystalline fractions of raw EC in the vegetable oil (150 °C). These fractions were eliminated by dissolving the raw EC/MG mixture in ethanol, evaporating the solvent, dispersing, and dissolving the solid residue in the vegetable oil (150 °C) prior gelation. The EC polymeric network, and MG, and CW crystals had a positive interaction on the elasticity of mixed oleogels. Mixed oleogels produced under static conditions showed a 100 %25 of elasticity recovery after shearing, a phenomenon associated with an EC interchain hydrogen bonding mediated by hydroxyl groups of MGs. This tentatively resulted from the formation of junction zones of the type EC-[MG]n-EC. The rheological behavior of these olegels was remarkably close to that of commercial shortenings. © 2020 Elsevier Ltd

authors

• Gallegos-Infante A.
• Ornelas-Paz J.D.J.
• Pérez Martínez Jaime David
• Rodríguez-Hernández A.K.
• Toro Vázquez Jorge Fernando

publication date

• 2021-01-01

funding provided via

• 256100  Grant
• Consejo Nacional de Ciencia y Tecnología, CONACYT  Grant
• Fondo Sectorial Investigación para el Desarrollo Aeroportuario y la Navegación Aérea, ASA-CONACYT  Grant

published in

• Carbohydrate Polymers  Journal

keywords

• Candelilla wax rheology; Elastic modulus; Ethylcellulose; Gelation; Mechanical reversibility; Monoglycerides; Oleogel Dissolution; Elasticity; Gelation; Hydrogen bonds; Rheology; Textures; Vegetable oils; Candelilla waxes; Crystalline fractions; Gelation process; Polymeric networks; Positive interaction; Rheological behaviors; Rheological property; Static conditions; Organic solvents; Dissolving; Elasticity; Fractions; Gelation; Hydrogen Bonds; Recovery; Rheology; Vegetable Oil

Digital Object Identifier (DOI)

• 10.1016/j.carbpol.2020.117171

PubMed ID

• 33183620

start page

end page

volume

• 252