THE NUTRITIONAL ADEQUACY AND PROBABLE TOXICITY OF FOODS PRESERVED BY IONIZING RADIATIONS. Progress Report No. 13 for Period: September 15, 1959 to March 15, 1960
Liver enzyme studies in animals fed Johnson type diets show that cytochrome oxidase activity is increased in animals fed the K-deficient irradiated diet. Supplementation with menadione returns these to normal. A gradient evaluation of the amount of vitamin K/sub 1/ required by the rat when fed a diet of irradiated beef was performed. The rat's minimum requirement for normal blood coagulation was 5.24 mu g vitamin K/sub 1/ per rat per day. Raw nonirradiated pork induced hemorrhage when fed to the rat. Rats were fed a diet containing bile acids and were orally administered gradient levels of vitamin K/ sub 3/. The minimum level of K/sub 3/ required for normal blood coagulation was 2 mu g per rat per day which is 50% less than that required when bile acids were not fed. Whole and skim milk was studied after direct irradiation and after the irradiation-distillation method. The irradiation-distillation technique seems to result in less protein alteration as exhibited by allergenicity and electrophoretic studies but results in a greater loss of methionine than the direct irradiation technique. The degree of protein alteration is dependent upon the concentration of the milk, the butterfat content, and the method of irradiation. (auth)
- Research Organization:
- Colorado. Univ., Boulder
- NSA Number:
- NSA-14-024416
- OSTI ID:
- 4154727
- Report Number(s):
- NP-9033
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALLERGY
ANIMALS
BILE ACIDS
BLOOD
CYTOCHROMES
CYTOLOGY
DIET
DISTILLATION
ELECTROPHORESIS
ENZYMES
ESTERS
FOOD
HEMORRHAGE
IMMUNITY
INDUSTRIAL APPLICATIONS OF ISOTOPES AND RADIATIONS
IRRADIATION
LIVER
MILK
ORGANIC ACIDS
OXIDASES
OXIDATION
PRESERVATION
PROTEINS
QUANTITY RATIO
RATS
TOXICITY
VITAMINS