The impact of the initial and advanced stages of glycation of sodium caseinate (SC) with galactose on the
interfacial and foaming properties has been investigated at pH 7 and 5. At pH 7, the most remarkable
result was the higher stabilizing foam capacity of glycoconjugates as compared to native and heat treated
SC, as a result of the higher elastic character and cohesion of the interfacial film formed by glycated SC. At
pH 5, native and control heated SC underwent a significant loss of solubility, resulting in a worse dynamic
of adsorption at the interface of such systems and the formation of fluid and poorly resistant films. However,
solubility of glycated SC remained relatively high, so that, at this pH, only SC glycoconjugates
showed interfacial characteristics suitable to stabilize the foam during its formation as well as against
mechanisms of foam destabilization at long term. This behavior was attributed to the higher adsorption
efficiency and degree of interfacial interaction exhibited by the SC glycoconjugates. These findings highlight
the beneficial effect of glycation on the foaming properties of SC which could contribute to broadening
the applicability of SC as a foaming agent, mainly in acid foods.