Abstract
The sol and gel properties of high-acyl (HA) gellan gum were investigated. Results indicated that the colloidal viscosity of HA sol increased with increasing gellan gum concentration from 0.05 to 0.1 g/100 mL and HA sol was featured with pseudoplastic behavior. The strength of gel formed at a concentration ranging from 0.2 to 0.5 g/100 mL was pronouncedly affected by polymer and Ca2+ concentrations. The strength of high acyl (HA)/low acyl (LA) mixed gellan gum decreased with increasing HA/LA ratio. Besides, the structure of HA gellan gum was analyzed through IR and NMR.
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