[Nitrates in cow's milk and in various milk products in the Ukraine].

The results of the investigations conducted have shown that most milk samples analyzed contained from 2 to 55.2 mg/l nitrates (P50 = 27.2 mg/l), dried milk and dry milk mixtures contained from 56.

[The hygienic evaluation of potato treated with the preparation Polikar made from the byproducts of soda manufacture].

It has been shown that Polycar prepared from sodium carbonate byproducts, intended for the treatment of potatoes before its storage, makes for an increase in solanine content, and a decrease in the level of ascorbic acid in potato. Such potato produces a toxic effect on the rat body. A conclusion has been made that Polycar could not be used as an agent for potato treatment.

[Mineral composition of the protein concentrates made from nontraditional raw plant materials].

Protein concentrates obtained from unconventional plant raw material, namely from the oil cake of tomato seeds, corn germs, flax and safflower hold promise as sources of biologically important components including mineral substances. The protein concentrates are marked by a high content of calcium, magnesium, phosphorus, copper, manganese and zinc. They are also rich in iron that occurs in the form of a protein complex of bivalent iron.

[Hygienic evaluation of the meat of pigs given a feed concentrate prepared from overflow active sludge].

The authors studied the chemical composition of the meat of pigs given the diet containing a feed concentrate obtained from excess active sludge and the effects on the laboratory animals of such meat fed for a year. As compared to the accepted standards, the meat of pigs given the feed concentrate showed high cadmium content in the kidneys and high lead content in the liver and muscles. Starting from the 6th month of being kept on the meat of experimental pigs, the rats demonstrated an appreciable increase in the count of peripheral blood reticulocytes which remained almost unchanged to the end of experiments.