Effect of riboflavin supply on student body's provision in north-western Poland with riboflavin measured by activity of glutathione reductase considering daily intake of other nutrients.

摘要

The riboflavin nutritional status of 120 people, aged 22-25, studying in Szczecin, Poland, together with contents of their daily food servings were studied. Riboflavin provision was determined using the erythrocyte glutathione reductase activity coeff. (EGRAC), and was compared with a sample in which the enzyme activity was stimulated with flavin adenine dinucleotide. Information concerning diets was collected using a 7-day food record prior to blood collection. Biochemical deficiency in riboflavin was observed in 33.7% of women and 25% of men. The resulting average EGRAC value was 1.02 for women and 0.88 for men. Assessment of significant differences in riboflavin provision between the sexes revealed better provision in the male group. The comparison of EGRAC values with riboflavin content in 7-day diets of the respondents showed that the average intake of this vitamin in the female group, in which biochemical deficiency was observed, amounted to 1.05 mg, whereas in the male group it was, on average, 1.39 mg. In the group of people in which the potential risk of riboflavin deficiency in the body was not observed, the level of this vitamin consumption was, on average, 1.43 and 1.8 mg in the female and male groups, respectively. Women with biochemical riboflavin deficiency consumed significantly less of all the analysed nutrients in comparison with those without riboflavin deficiency.