QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Robbins, K. R. Articles by Finley, J. W. Search for Related Content PubMed PubMed Citation Articles by Robbins, K. R. Articles by Finley, J. W.

Studies on the Utilization of Lysinoalamine and Lanthionine

Kelly R. Robbins^,1, David H. Baker and John W. Finley^*

University of Illinois at Urbana-Champaign, Urbana, IL 61801 ^* USDA, Western Regional Research Laboratory, Berkeley, CA 94710

Studies were conducted to determine the nutritional value of lysinoalanine for rats and chicks and the nutritional value of lanthionine for chicks. For each experiment, purified crystalline amino acid diets and crystalline lysinoalanine and lanthionine were employed. Results indicated that the lysine moiety of lysinoalanine is completely unavailable to the rat and only partially available to the chick. Of 10 rats fed lysinoalanine, seven developed nephrocytomegaly. The lanthionine studies indicated that the cysteine moiety of lanthionine is 32% available when fed as the racemic mixture and 52% available when fed as the L-DL-isomeric mixture. Thus, it appears that lysinoalanine formation in alkali-treated proteins results in a corresponding decrease in nutritionally available lysine. However, the lanthionine formed under similar conditions results in loss of only one-half of the corresponding level of nutritionally available cysteine.

KEY WORDS: • alkali-treated proteins • lysinoalanine • lanthionine • amino acids

¹ Present address: Department of Animal Science, University of Tennessee, Knoxville, TN 37901.

Manuscript received 4 September 1979.

This article has been cited by other articles:

				D. H. Baker Lysine, Arginine, and Related Amino Acids: An Introduction to the 6th Amino Acid Assessment Workshop J. Nutr., June 1, 2007; 137(6): 1599S - 1601S. [Abstract] [Full Text] [PDF]

				D. H. Baker Comparative Species Utilization and Toxicity of Sulfur Amino Acids J. Nutr., June 1, 2006; 136(6): 1670S - 1675S. [Abstract] [Full Text] [PDF]

				D. H. Baker Inaugural Article: Comparative nutrition and metabolism: Explication of open questions with emphasis on protein and amino acids PNAS, December 13, 2005; 102(50): 17897 - 17902. [Abstract] [Full Text] [PDF]