Fig. 1. FTIR spectra of the films. (a) CGBE = 0 g, (b) CGBE = 0.5 g/100 g gelatin, (c) CGBE = 1.5 g/100 g gelatin, (d) CGBE = 2.5 g/100 g gelatin, (e) CGBE = 3.0 g/100 g gelatin, (f) CGBE = 4.0 g/100 g gelatin, (g) CGBE = 5.0 g/100 g gelatin.
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