Título:
|
Whole-rat protein content estimation: applicability of the Nx6.25 factor
|
Autor/a:
|
Rafecas Jorba, Immaculada; Esteve, Montserrat; Fernández López, José Antonio; Remesar Betlloch, Xavier; Alemany, Marià, 1946-
|
Otros autores:
|
Universitat de Barcelona |
Abstract:
|
The amino acid composition of the protein from three strains of rat (Wistar, Zucker lean and Zucker obese), subjected to reference and high-fat diets has been used to determine the mean empirical formula, molecular weight and N content of whole-rat protein. The combined whole protein of the rat was uniform for the six experimental groups, containing an estimate of 17.3% N and a mean aminoacyl residue molecular weight of 103.7. This suggests that the appropriate protein factor for the calculation of rat protein from its N content should be 5.77 instead of the classical 6.25. In addition, an estimate of the size of the non-protein N mass in the whole rat gave a figure in the range of 5.5 % of all N. The combination of the two calculations gives a protein factor of 5.5 for the conversion of total N into rat protein. |
Materia(s):
|
-Rates (Animals de laboratori) -Proteïnes dels aliments -Nitrogen conversion factor (6.25) -Protein analysis -Protein nitrogen -Rat |
Derechos:
|
(c) The Nutrition Society, 1994
|
Tipo de documento:
|
Artículo Artículo - Versión publicada |
Editor:
|
The Nutrition Society, 1994
|
Compartir:
|
|