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close this bookProtein-Energy Requirements of Developing Countries: Evaluation of New Data (UNU, 1981, 268 p.)
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close this folderA note on energy utilization and its efficiency
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close this folderResearch papers: Protein requirements-adults, standard protocols
close this folderCapacity of the Chilean mixed diet to meet the protein and energy requirements of young adult males
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close this folderProtein requirements for young Colombian adults consuming local diets containing primarily animal or vegetable protein
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close this folderProtein requirements of young Chinese male adults for ordinary Chinese
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close this folderProtein requirements of young male adults with a rural Mexican diet
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close this folderThe evaluation of soy protein isolate alone and in combination with fish in adult Japanese men
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close this folderProtein requirements of adult Thai males
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close this folderEvaluation of the nutritive value of a rice-and-bean-based diet for agricultural migrant workers in Brazil
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close this folderProtein requirements-adults, other protocols
close this folderProtein quality of rice-and-bean diets with or without protein and energy supplements to estimate protein requirements in young adult humans
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close this folderProtein needs of young adult men fed common beans (phaseolus vulgaris) in combination with starch, plantain, maize, or rice
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close this folderObligatory nitrogen losses-adults
close this folderObligatory urinary and faecal nitrogen losses in young Chilean men fed two levels of dietary energy intake
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close this folderProtein absorption of adult men with intestinal helminthic parasites
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close this folderAbsorptive capacity of adult Guatemalan rural males living under different conditions of sanitation
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close this folderStudies of energy intakes, expenditures, and requirements in China
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close this folderObligatory and integumental nitrogen losses - children
close this folderObligatory nitrogen losses and factorial calculations of protein requirements of pre-school children
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close this folderIntegumental nitrogen losses of pre-school children with different levels and sources of dietary protein intake
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View the documentThe protein requirements of normal infants at the age of about one year: maintenance nitrogen requirements and obligatory nitrogen losses
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close this folderProtein requirements of Filipino children 20 to 29 months old consuming local diets
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close this folderProtein requirements of pre-school children: milk and soybean protein isolate
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close this folderProtein absorption of pre-school children with intestinal helminth parasites
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close this folderCapacity of habitual Guatemalan diets to satisfy protein requirements of pre-school children with adequate dietary energy intakes
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close this folderEnergy requirements of pre-school children and effects of varying energy intakes on protein metabolism
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close this folderRecommended dietary energy intakes for the first six months of life
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close this folderProtein-energy requirements-adults
close this folderInterrelationships between effects of protein and energy intakes on nitrogen utilization in adult men
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close this folderRecommended dietary amounts of energy for pregnancy and lactation in the United Kingdom
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Conclusions

1. The mean nitrogen requirements, allowing for integumental losses and nitrogen retention for growth, were 98 mg (0.61 9 protein) of milk/kg/day and 120 mg (0.75 9 protein) of soybean isolate/kg/day. The milk requirement is 33 per cent lower than the estimate made by the FAD/WHO Committee of Experts on Energy and Protein Requirements (WHO Tech. Rep. Ser. No. 522, 1973).

2. The coefficients of variation between individuals of the regression coefficients and of the nitrogen requirements for the two protein sources were between 14 and 16 per cent, except for the mean nitrogen requirement with milk, which was 28 per cent. If two children with high requirements were excluded, variability would be reduced to 16 per cent. The safe levels of intake of the two proteins can be calculated by adding 30 per cent to the mean requirements (FAO/WHO, 1973), or by using the higher limit of the 95 per cent confidence bands (Rand et al., Am. J. Clin. Nutr., 30: 1129 [1977] ). With the former approach, they would be 127 mg nitrogen or 0.79 9 protein/ kg/day for milk, and 156 mg nitrogen or 0.98 9 protein/kg/day for soybean protein isolate. Using the confidence bands, they are 151 mg nitrogen or 0.94 9 protein/kg/day for milk, and 162 mg nitrogen or 1.01 9 protein/kg/day for the soybean isolate. All of these values are lower than the 1.19 9 milk protein/kg/day suggested by FAD/WHO

3. The nutritive value of the soybean protein isolate was 82 per cent relative to milk.

Acknowledgements

The Ralston-Purina Company provided us with the milk, soybean protein isolate, and other materials used in these studies. Ms. Cabrera-Santiago participated in the investigation under a Fellowship from the United Nations University World Hunger Programme.