Auto-Cross-Linking Hydrogels of Hydrogen Peroxide-Oxidized Pectin and Gelatin for Applications in Controlled Drug Delivery

Figure 4

Hydrogels of gelatin and pectin, with different oxidation levels, after 72 h of swelling in a SBF at 32°C. From left to right, the four samples are H.6.20 (6% HOP and 20% of gelatin), L.6.20 (6% LOP and 20% of gelatin), N.6.20 (6% NOP and 20% of gelatin), and 0.20 solely gelatin (20% gelatin).