No description available.

No description available.

Thesis: M.S., Massachusetts Institute of Technology, Department of Nutrition and Food Science, 1980 / Includes bibliographical references. / by Thomas Henry Openshaw. / M.S. / M.S. Massachusetts Institute of Technology, Department of Nutrition and Food Science

No description available.

No description available.

The purpose of this study was to determine the riboflavin intake in food and the excretion in the urine and feces of young college women living in the home management house and eating a self selected diet from a common food supply.

This thesis is a review of thirty-two investigations made from 1917 to 1944 relative to vegetables in the diet of the American people.

The vitamin B-6 status of 11 white adolescent females living in the Blacksburg/Roanoke, Virginia area was evaluated by dietary intakes, coenzyme stimulation of erythrocyte alanine aminotransferase (F-ALAT) activities, and plasma total vitamin B-6 measured microbiologically. Heights and weights of the group were generally within ranges. The vitamin B-6 intakes of the adolescents were 1.47 ± 0.49 mg/day (mean ± SD). Three subjects, or 27.3%, the same subjects classified as inadequate in status by coenzyme stimulation of E-ALAT, were classified as marginal or inadequate in status using ≤ 25 ng/ml total plasma vitamin B-6 levels as the criterion. The plasma pyridoxal, pyridoxine, pyridoxamine and total B-6 vitamer concentrations of subjects having inadequate E-ALAT values were lower, generally significantly, than those of girls with adequate levels. In the subjects with adequate status, the vitamer found in the largest plasma concentration was pyridoxine. A significant correlation (r = 0.82, p < 0.01) was observed between total plasma vitamin B-6 levels determined microbiologically and coenzyme stimulation values. / Master of Science

The effect of three sources of protein: soy, dairy, and meat protein, and two levels of calcium on zinc, iron, copper, calcium, and magnesium retention in young adult men was determined in a 30-day metabolic balance study. The study was divided into a twenty-day baseline period, a thirty day controlled feeding period from which all the balance data was collected, and a twenty day follow-up period. During the controlled feeding period, twenty-four subjects were randomly assigned to one of three dietary treatment groups which differed in respect to protein source. The dairy treatment group was fed a diet in which 70% of the dietary protein was derived from dairy products; the soy treatment group was fed a diet in which 67% of the dietary protein was derived from soy products; and the meat treatment group was given a diet in which 70% of the dietary protein was provided by animal meat products. To test the effect of calcium level on mineral retention, the controlled feeding period was divided into two periods: Period I, in which the subjects consumed moderate levels of calcium (mean= 1206.77 + 193.29 mg/day) and Period II, in which the subjects consumed high levels of calcium (mean 2134.51 + 164.63 mg/day). / Master of Science

A longitudinal feeding study of 154 infants in Southwest Virginia was conducted during 1978-1980. The incidence of vitamin and mineral supplementation among these infants was the focus of the retrospective study discussed here. With the use of the Nutritional Analysis System of Louisiana State University, nutrient adequacy levels were determined. Vitamin D, vitamin E, folacin, vitamin B-6, and iron were the problem nutrients identified through this analysis. Inappropriate infant feeding practices such as the use of low iron formulas, the use of cow's milk, and the consumption of inadequate milk volume were blamed for these dietary deficiencies. Routine vitamin supplementation was common among infants of all feeding types. While much of the supplementation was unnecessary, large percentages of infants demonstrated a need for it. The exception was vitamin A. None of the infants who received supplemental vitamin A had inadequate dietary intakes of this nutrient. Supplementation was not shown to have an effect on weight or length gain measurements. Parents should be given specific infant feeding instructions prior to hospital discharge. Included should be a list of the circumstances which would indicate the need for supplementation. / M.S.