Water has a significant influence on the stability of collagen structure. Three water types can be distinguished, that is free water, bound water and structural water. Free water fills hollows and inequalities of macromolecules. Bound water builds intermolecular cross bonds and is bound by groups of hydrophilic side chains inside collagen fibrils. Structural water is permanently bound by polypeptide chain. It builds hydrogen bonds inside of the tropocollagen triple helix [6]. Nomura [6] divides water, giving it precise value ranges; structural water (0.00–0.07) g/g protein, bound water (0.07–0.25) g/g protein, free water—more than 0.45 g/g protein.