title: The effect of ageing on the rheological properties of gelatin gels.
abstract: The effect of ageing at 4 degrees on the viscoelastic properties of 1-5 and 2-0% acid and alkaline processed gelatin gels has been investigated. Viscoelastic properties were not markedly affected by ageing time although evidence of a decrease in gel structure with increasing ageing time was apparent. This has been tentatively attributed to hydrolysis of amide links. 1-5% alkaline gels were shown to be more rigid than the corresponding acid gels and this has been discussed in terms of differences in molecular weight, polydispersity, charge and charge distribution.
mesh_terms: D004548:Elasticity; D004586:Electrophoresis; D005780:Gelatin; D005782:Gels; D006863:Hydrogen-Ion Concentration; D007525:Isoelectric Focusing; D012212:Rheology; D013314:Stress, Mechanical; D013696:Temperature; D013861:Thiocyanates; D013997:Time Factors; D014783:Viscosity
chemical_list: D005782:Gels; D013861:Thiocyanates; D005780:Gelatin