Gelatin is a biodegradable, biocompatible, non-toxic and
non-carcinogenic biopolymer [1]. It is typically obtained
through partial denaturation of collagen and accounts for
30% of the total animal protein in all animals. Collagen
comprises all 20 amino acids in its three a-chains, which
are stabilized and interlaced by hydrogen bonds into a
triple helix that rotates clockwise [2–4]. Collagen may be
partially degraded using two distinct pre-treatments, the
acid and the alkali, resulting in type-A and type-B gelatin,
respectively [3,5].