Total Monoglyceride Content of Some Dairy Products

Technical note: Measurement of total estrone content in foods. Application to dairy products.

Estrone is a powerful growth-inducing hormone that is present in milk, mainly in the form of fatty acid esters, at concentrations that promote growth in experimental animals. We present here a method useful for the measurement of this natural hormone in foods and applied it to several common dairy products. Samples were frozen, finely powdered, and lyophilized then extracted with trichlorometha...

Total Nitrogen Content of Dairy Manures in New Mexico

Some studies on microbacteria from Iowa dairy products.

Microbacteria have attracted attention because they are among the most heat-resistant, non-sporeforming types of bacteria found in dairy products. As they grow poorly, if at all, at 37 C, they usually were overlooked when the standard plate count procedure called for incubation of the plates for 48 hr at that temperature. However, they form small colonies when incubation temperatures of 32 to 3...

Some results on total domination in direct products of graphs

Upper and lower bounds on the total domination number of the direct product of graphs are given. The bounds involve the {2}-total domination number, the total 2-tuple domination number, and the open packing number of the factors. Using these relationships one exact total domination number is obtained. An infinite family of graphs is constructed showing that the bounds are best possible. The dom...

The Histamine Content in Some Samples of Food Products

L���������� J., W�������� M., P����� U. (2004): The histamine content in some samples of food products. Czech J. Food Sci., 22: 81–86. Histamine level determination in some food products was performed by two known methods: spectrofluorimetric method and ELISA method. The immunoenzymic method enables a rapid and precise determination of histamine in many samples. In spite of that, it does not re...