Study on Viscosity of κ-Carrageenan and Gelatin Solutions and Their Mixture using for Candy
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Abstract:
The impact of shear rate, concentration and testing temperature on the viscosity of κ-carrageenan and gelatin solution was studied in this paper. Gelatin and κ-carrageenan were compounded and the influences of mixture ratio, concentration and temperature on the viscosity of complex solution were concerned. The results showed that the viscosity of single κ-carrageena and gelatin solution was increased with the increase of concentration; and decreased with the testing temperature. Carrageenan solution showed shear-thinning pseudoplastic; the apparent viscosity of gelatin solution trended to stabilize with the shear rate changes. The viscosity of mixture solution was improved with the increase of κ-carrageenan content in the complex and the concentration of complex solution, and decreased with the testing temperature. With the total content 4% and the ratio of carrageenan and gelatin was 3:7, an easy flowing solution which can form the gel with elasticity and chewiness was gained.
