Definition of substitution. 1  1a : the act, process, or result of substituting one thing for anotherb : replacement of one mathematical entity by another of equal value. 2  2 : one that is substituted for another.
Homogenized milk is any sort of milk that has been mechanically treated to ensure that it has a smooth, even consistency. The homogenization process typically involves high temperatures, agitation, and filtration, all aimed at breaking down milk's naturally occurring fat molecules.
The shelf life of dairy cream is influenced by a variety of factors, such as the type of cream, the processing method, packaging date, its exposure to heat, and how the it is stored. Cream is a dairy product that is composed of the higher-butterfat layer skimmed from the top of milk before homogenization.In un-homogenized milk, over time, the lighter fat rises to the top.ream is a dairy product that is composed of the higher-butterfat layer skimmed from the top of milk before homogenization. In un-homogenized milk, over time, the lighter fat rises to the top.