There are many substances which are found on the market at the present time intended for preserving food products under various brands and names. The claims made for these substances by the manufacturers would lead one to believe that the brand of substance for which the claim is made possessed a wonderful power for preserving food products. When these mixtures are examined it is found that they are composed of common substances and such that any one could readily prepare for a small part of the price charged for them.
In the development of the dairy industry from the farm dairy to the creamery, it has been found that the processes connected with the industry must be controlled in an intelligent manner in order that success may result
Weems, J. B.; Mead, I. J.; and Gray, C. E.
"The chemical composition of food preservatives. Solutions for testing cream and milk.,"
Bulletin: Vol. 6
, Article 1.
Available at: https://lib.dr.iastate.edu/bulletin/vol6/iss67/1