title: Bio-utilization of protein, calcium and zinc from diets based on rice and beans, in human beings.
abstract: Nine male healthy adults volunteers of average body weight 69.51 +/- 11.59 kg were submitted to 3 experimental diets: I complete diet, containing rice and beans (RB): II--low protein, low calcium: III--vegetable diet containing RB. The diets were consumed "ad libitum". The total energy intake in each dietary period were: 46.04 +/- 9.18; 37.57 +/- 9.04; 55.27 +/- 7.18 respectively. The average free choice for the proportion of rice/beans was 1.22 and 1.35 in the periods I and III. The protein balance was positive only for the diet I and the balance of calcium was positive in diets I and II. Zinc didn't attained positive balance neither in diet I. It is suggested that the presence of beans in diets I and III plays an important role in decreasing the bio-utilization of the studied nutrients.
authors.affiliation: Physiology and Biophysics Department, São Paulo University, Brazil.
authors.forename: R C
authors.initials: RC
authors.lastname: de Angelis
authors.forename: G A
authors.initials: GA
authors.lastname: Orozco
authors.forename: J V
authors.initials: JV
authors.lastname: Campos
mesh_terms: D000328:Adult; D001682:Biological Availability; D002118:Calcium / Q000493:pharmacokinetics*; D004044:Dietary Proteins / Q000493:pharmacokinetics*; D002149:Energy Intake; D007887:Fabaceae; D006801:Humans; D008297:Male; D008875:Middle Aged; D012275:Oryza; D010946:Plants, Medicinal; D015032:Zinc / Q000493:pharmacokinetics*
chemical_list: D004044:Dietary Proteins; D015032:Zinc; D002118:Calcium