The process
modifies polymer shape to a coiled form. To avoid extensive degradation
of the peptide structure, the processing of gelatin needs to be
carefully controlled so as to achieve a high gelling strength. Higher
gel strength will be obtained using gelatin which possesses more
-chains. In terms of pH values, over a wide range, gelatin is a
polyampholyte, whereby it has positive and negative charges which
also has uncharged hydrophilic and hydrophobic groups