EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Metabolism of L-theanine in tea leaves


, : Metabolism of L-theanine in tea leaves. JARQ Japan Agricultural Research Quarterly 21(1): 42-46

It was established that theanine hydrolase plays an important role in the metabolism of L-theanine during which it is first hydrolysed to glutamic acid and ethylamine. The ethylamine released is then oxidized to ammonia and acetaldehyde by amine oxidase.


Accession: 001634329

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Anonymous, 1966: Metabolism of L-theanine, D-theanine and the related compounds in bacteria I Bacterial and enzymatic hydrolysis of L- and D-isomers of theanine and identification of products

Anonymous, 1966: Metabolism of L-theanine, D-theanine and the related compounds in bacteria II Purification and properties of the enzyme hydrolyzing L-theanine, D-theanine and the related compounds

Konishi, S.; Takahashi, E., 1969: The metabolism and regulation of theanine and its related compounds in the tea plant. Part 6. The metabolism of 14C-labelled theanine (N-ethyl-14C) and its metabolic redistribution in the tea plant. 14C-Ethylamine supplied to 18-day-old seedlings was incorporated into theanine during 3 days' incubation. In light and darkness similar quantities of 14C-theanine were translocated from roots and cotyledons to the shoots during the next 60 da...

Sadzuka, Y.; Sugiyama, T.; Nagamine, M.; Umegaki, K.; Sonobe, T., 2005: Efficacy of theanine is connected with theanine metabolism by any enzyme, not only drug metabolizing enzymes. Theanine increases the antitumor effect of doxorubicin (DOX) with decreasing adverse reaction. We clarified the mechanism by which theanine decreases the adverse reaction of DOX on any metabolizing enzymes of theanine. There was no change in the a...

Scheid, L.; Ellinger, S.; Alteheld, B.; Herholz, H.; Ellinger, Jörg.; Henn, T.; Helfrich, H-Peter.; Stehle, P., 2013: Kinetics of L-theanine uptake and metabolism in healthy participants are comparable after ingestion of L-theanine via capsules and green tea. L-Theanine, an amino acid in green tea, is suggested to improve cognition and mood. Therefore, L-theanine is available as a supplement and is now used as an ingredient in functional drinks. Because data on the metabolic fate of L-theanine from hum...

Konoshi, S.; Kasai, Z., 1968: The metabolism and regulation of theanine and its related compounds in tea plants. Part 1. The effect of shading on 14CO2 assimilation in tea leaves. Tea shoot tips and old leaves were exposed to 14CO2 at 4, 000 lux light intensity for 30 minutes. In both light and shade treatments some radioactivity was found in glutamic acid in tea shoot tips and old leaves, but little incorporation of 14CO2...

Konishi, S.; Kasai, Z., 1968: The metabolism and regulation of theanine and its related compounds in tea plants (Part 1). The effect of shading on the 14CO2 assimilation in tea leaves. Soil Sci. Pl. Nutr. 1.4 (209) In shoot tips and old leaves exposed to 14CO2 at 4000 lux light intensity for 30 mins, only small amounts of 14CO2 assimilation products were incorporated into theanine. The assimilated raffinose + R1 (unknown)-14C wa...

Konishi, S.; Matsuda, T.; Takahashi, E., 1969: The metabolism and regulation of theanine and its related compounds in the tea plant. Part 5. Comparative studies on the synthesis of theanine and L-glutamic acid y-methylamide in Thea sinensis, Camellia sasanqua and Oryza sativa. The existence and in vivo synthesis of theanine and L-glutamic acid y-methylamide in roots and new shoots of tea and of Camellia sasanqua were established. In both species the synthesis of amides was less in shaded treatments than in light. The re...

Konishi, S.; Kasai, Z., 1968: The metabolism and regulation of theanine and its related compounds in the tea plant. Part 2. Synthesis of theanine from 14CO2 in tea plants and sites of the synthesis. and little incorporation of 14C into theanine was found in either the leaves or the roots, but 24 hours after the treatment considerable radioactivity was detected in theanine in the roots in both light and shady conditions. Radioactivity was also...

Nagata, T., 1986: The exudation of glutamine and theanine from tea leaves. A white substance exuded by leaves of plants grown in rain-free conditions (under shade or in the greenhouse) was confirmed as a mixture of glutamine and theanine. The same exudation phenomenon was also observed in the field in a mature plantation...