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A Proposed Method and Apparatus for the Determination of Extraneous Matter in Roller-Dried Milk Powder for use in Cheese Food Products

Kraft Foods Co., Chicago, Illinois

ABSTRACT

In working with roller-dried nonfat milk powder, the optimum conditions for hydrolysis for obtaining a suitable substrate which can be filtered satisfactorily through a lintine disc have been found. Practically all extraneous matter, including scorched particles, can be recovered on lintine disc. A filterable substrate can be obtained without the use of a defoaming agent, a high-speed stirring motor and subjecting samples to boiling temperatures prior to filtering.

A newly designed piece of equipment for use in extraneous matter testing has been introduced. This unit is so constructed as to allow tests requiring different time and temperatures to be run at the same time ; more sanitary operation also is possible by a compact unit with covered containers. Greater economy of manpower working space and equipment is achieved.