Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Food & Nutrition Science Regular Papers
Time-dependent Changes of Amino Acids in the Serum, Liver, Brain and Urine of Rats Administered with Theanine
Takehiko TERASHIMAJun TAKIDOHidehiko YOKOGOSHI
Author information
JOURNALS FREE ACCESS

1999 Volume 63 Issue 4 Pages 615-618

Details
Abstract

  Time-dependent changes of theanine (γ-glutamylethylamide) and other amino acids in various tissues of rats were investigated during the 24 hrs after theanine administration. When theanine (4 g/kg of body weight) was intragastrically administered to rats, the concentrations of theanine in the serum, liver and brain were significantly increased 1 hr after its administration, and thereafter gradually decreased, but reached the maximum level in the brain after 5 hrs. Theanine in these tissues had completely disappeared 24 hrs after its administration. In contrast, the administration of theanine resulted in the concentrations of theanine, urea, ethylamine and glutamic acid in the urine being significantly enhanced. These results suggest that theanine might be degraded via glutamic acid.

Information related to the author

This article cannot obtain the latest cited-by information.

© 1999 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
Previous article Next article
feedback
Top