title: The gelation of oil using ethyl cellulose.
abstract: The characterization of the thermo-gelation mechanism and properties of ethyl cellulose/canola oil oleogels was performed using rheology and thermal analysis. Thermal analysis detected no evidence for thermal transitions contributed to secondary conformational changes, suggesting a gelation mechanism that does not involve secondary ordered structure formation. Rheological analysis demonstrated a relationship between the polymer molecular weight and the final gel strength, the cross-over behavior as well as the gel point temperature. Increasing polymer molecular weight led to an increase in final gel strength, the modulus at cross-over, and the gel point temperature. Cooling/heating rates affect gel modulus only for the low molecular weight samples. A decrease in gel strength with increasing cooling rate was detected. The cross-over temperature was not affected by the cooling/heating rates. Cooling rate also affected the gelation setting time where slow cooling rates produced a stable gel faster.
authors.affiliation: Department of Food Science at the University of Guelph, 50 Stone Road East, Guelph, ON, Canada, N1G2W1.
authors.forename: M
authors.initials: M
authors.lastname: Davidovich-Pinhas
authors.affiliation: Department of Food Science at the University of Guelph, 50 Stone Road East, Guelph, ON, Canada, N1G2W1.
authors.forename: S
authors.initials: S
authors.lastname: Barbut
authors.affiliation: Department of Food Science at the University of Guelph, 50 Stone Road East, Guelph, ON, Canada, N1G2W1. Electronic address: amarango@uoguelph.ca.
authors.forename: A G
authors.initials: AG
authors.lastname: Marangoni
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D005229:Fatty Acids, Monounsaturated / Q000737:chemistry*; D005782:Gels; D007700:Kinetics; D055595:Mechanical Phenomena; D008970:Molecular Weight; D009930:Organic Chemicals / Q000737:chemistry; D000074262:Rapeseed Oil; D012212:Rheology; D044366:Transition Temperature
chemical_list: D005229:Fatty Acids, Monounsaturated; D005782:Gels; D009930:Organic Chemicals; D000074262:Rapeseed Oil; C016021:oleogels; C013517:ethyl cellulose; D002482:Cellulose
keywords: Ethyl cellulose; Gel point; Oleogel; Rheology; Thermo-reversible gelation