Sodium Alginate and Gellan Gum Hydrogel Synthesis

Sodium alginate (ALG) was supplied by BÜCHI Labortechnik AG (Flawil, Switzerland), for which the viscosity average molecular weight was determined in our laboratory, and it was equal to 55,800 for K = 0.0178 cm³/g and a = 1 [29 (link)]. Gellan gum (GG) was purchased from Sigma-Aldrich (Poznan, Poland). Calcium chloride (CaCl₂), acetic acid (CH₃COOH), sodium acetate (CH₃COONa), disodium phosphate (Na₂HPO₄), monosodium phosphate (NaH₂PO₄), sodium carbonate (Na₂CO₃), and sodium bicarbonate (NaHCO₃) were supplied by Chempur (Piekary Slaskie, Poland). Decyl glucoside (DG) was acquired from Greenaction (Kielce, Poland). All used chemicals were of analytical grade.