Fig. 2. Surface topographical features of gelatin and sodium caseinate
films (a) GC: gelatin control, (b) GA25: seaweed extract at 25% of gelatin, (c) GA50: seaweed extract at
50% of gelatin, (d) CC: sodium caseinate control, (e) CA25: seaweed extract at 25% of sodium caseinate and (f) CA50: seaweed extract at 50% of sodium caseinate.