What process involves the formulation of strong chemical linkages between gelatin strands?

The process that involves the formulation of strong chemical linkages between gelatin strands is cross-linking. Cross-linking refers to the formation of chemical bonds that link one polymer chain to another, creating a network that enhances the structural integrity and mechanical properties of the material.

In the case of gelatin, which is a protein derived from collagen, cross-linking can occur through various means such as chemical reactions that create covalent bonds between the amino acid residues, leading to a stronger and more stable gelatin network. This is especially important in applications where gelatin is used, as it affects its gelling properties, texture, and overall performance in pharmaceutical formulations.

Hydrolysis involves the breakdown of chemical bonds due to the reaction with water, polymerization refers to the process of joining monomers to form a polymer, and coalescence is the merging of discrete particles or droplets into a single larger entity. None of these processes involve the specific formation of strong linkages as seen in cross-linking, which is the key factor making it the correct answer in this context.