Abstract
The kappa carrageenan (κ-carrageenan) polysaccharide is a water soluble biopolymer extracted from various species of red marine algae (Rhodophyta) which has an excellent gel forming ability. Compositions of four different formulations of carrageenan-based hydrogels with various sorbitol and glycerin concentrations were prepared. Mechanical properties, swelling properties and resistance to degradation of hydrogels were analyzed. All samples had high resistance to degradation and were capable of absorbing a large quantity of water. However, the most optimal formulation was that containing 20% sorbitol and 1.5% glycerin. Hydrogels containing 20% sorbitol and 1.5% glycerin had the highest values of Young's modulus and the lowest water uptake ratio. The obtained carrageenan-based hydrogels have a high potential for the application in the cosmetic or dermatological areas.
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