ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Studies were performed to measure the protein quality of spray-dried whole milk and of casein using a short-term nitrogen balance index with adult human subjects. Comparative values were obtained using the conventional nitrogen balance assay technique. The quality of the protein was calculated by regression analysis of all nitrogen absorbed to nitrogen retained. The coefficients of regression for milk when the short-term approach was used were 1.06, 0.97, 0.91 and 0.88. The differences were not statistically significant. With the conventional method, the value obtained was 0.88. The value from the conventional method was not statistically different from those obtained by. the short-term variation, which has a tendency to give higher values. The coefficient of regression of nitrogen absorbed to nitrogen retained for casein was 0.65. The results also suggested less variation if the nitrogen balances per protein intake are of two days duration, allowing for more representative fecal collections. The results obtained suggest the short-term nitrogen balance index to be a suitable approach to protein quality evaluation in humans, although we recognize the need to perform additional studies to standardize the technique as much as possible.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1979.tb03465.x
