Density is the most important characteristics of a rennet clot.
Milk collected from Simmental cows produces a clot of a rather high density (2.79 g/cm3).
However, it is less than that of the clots produced from Jersey milk (4.82 g/cm3),
which correlates with relatively low content of protein, particularly, casein.
The lower the casein content in the milk, the less the number of connections between the para-casein micellae in the clot. The mechanical properties of the clot are determined by the chemical composition of the gel,
interconnections between the gel components as well as the number and strength of the connections between them
(namely, by the gel composition and properties) [2].