Abstract:
Compression tests and texture profile analysis (TPA) were used to test the strength, deformability and hardness of mixed gels with high acyl gellan and κ-carrageenan.The influences of Ca2+, Mg2+, K+, Na+ and different HA∶CA ratios on the texture properties of the mixed gels were investigated.The total polymer concentrations of the gels in our study were all at 1% (w/v) .Ion concentrations of the samples were set as 2~80mmol/L, and the ratios of HA∶CA were 25∶75, 50∶50 and 75∶25.The result showed that divalent cations significantly influenced the texture of the mixed gels compared with monovalent cations, and Ca2+ was the most effective cations in the study.The strongest synergistic interaction occurred when the ratio of HA∶CA was 75∶25 and the mixed gels of high acyl gellan and κ-carrageenan had a good deformability.