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Untersuchungen über die Aminosäurezusammensetzung von nichtresorbierten Peptidfraktionen des distalen Dünndarminhaltes von Ratten. 3. Mitt. Verfütterung von Weizenkleber und Melassehefe. Untersuchungen über den Gehalt an essentiellen Aminosäuren im Kot

Untersuchungen über die Aminosäurezusammensetzung von nichtresorbierten Peptidfraktionen des distalen Dünndarminhaltes von Ratten. 3. Mitt. Verfütterung von Weizenkleber und Melassehefe. Untersuchungen über den Gehalt an essentiellen Aminosäuren im Kot

Authors :
J. Uhlig
J. Proll
R. Schadereit
H.‐D. Bock
R. Noack
M. Friedrich
Source :
Food / Nahrung. 22:237-250
Publication Year :
1978
Publisher :
Wiley, 1978.

Abstract

The authors investigated the nitrogen content of different fractions and in particular the aminoacid composition of the trichloroacetic acid (TCA)-precipitable and TCA-soluble peptides in the distal small intestine of rats which had been fed experimental diets (nitrogen-free or containing casein, wheat gluten or molasses yeast as a protein carrier). Parallel with this, they determined in growing rats the nitrogen and amino-acid digestibility of molasses yeast and wheat gluten according to the technique of faecal analysis, and studied the amino-acid composition of the faecal protein. Independently of the dietary protein fed, the peptide fractions of the content of the intestine showed an amino-acid composition that was largely similar to that found in case of nitrogen-free diet. The amino-acid composition of the faecal protein is, independently of the dietary protein given, relatively constant and corresponds approximately to the intestinal loss protein. There is agreement between the amino-acid composition of the TCA-precipitable peptide fractions and those of the corresponding faecal proteins. These components seem to be of endogenous origin.

Details

ISSN :
15213803 and 0027769X
Volume :
22
Database :
OpenAIRE
Journal :
Food / Nahrung
Accession number :
edsair.doi...........fb54fa622bf4e2702fba094777a9d2c3
Full Text :
https://doi.org/10.1002/food.19780220215