| Reaction behaviors of glycine under super- and subcritical water conditions. | |
| | |
MedLine Citation:
|
PMID: 11889913 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The influence of temperature and pressure on the dimerization and decomposition of glycine under simulated hydrothermal system conditions was studied by injecting a glycine solution into water in the sub- and supercritical state. The experiments at five different temperatures of supplied water--250, 300, 350, 374, and 400 degrees C--were performed at 22.2 and 40.0 MPa. At 350 degrees C, experiments under 15.0-40.0 MPa were conducted. Diglycine, triglycine (trace), diketopiperazine, and an unidentified product with a high molecular mass (433 Da) were the main products of oligomerization. The results show that temperature and pressure influence the extent of dimerization and decomposition of glycine. The maximum of dimers formation was observed at 350 and 375 degrees C at 22.2 and 40.0 MPa, respectively, and coincided with a high rate of glycine decomposition. Glycine, alanine, aspartic acid, as well as other amino acids, were obtained by injecting a mixture of formaldehyde and ammonia. The results support the oligomerization and synthesis of amino acids in a submarine hydrothermal system. |
| | |
Authors:
|
Dimitar K Alargov; Shigeru Deguchi; Kaoru Tsujii; Koki Horikoshi |
Related Documents
:
|
22116363 - The anion exchanger pendrin (slc26a4) and renal acid-base homeostasis. 9353 - Studies on the proteinase-a inhibitor i3a from yeast. 1511683 - Regulation of the final phase of mammalian melanogenesis. the role of dopachrome tautom... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life Volume: 32 ISSN: 0169-6149 ISO Abbreviation: Orig Life Evol Biosph Publication Date: 2002 Feb |
Date Detail:
|
Created Date: 2002-03-13 Completed Date: 2002-10-16 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 8610391 Medline TA: Orig Life Evol Biosph Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 1-12 Citation Subset: IM; S |
Affiliation:
|
DEEPSTAR Group, Japan Marine Science and Technology Center, 2-15 Natsushima-cho, Yokosuka 237-0061, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Amino Acids
/
chemical synthesis Ammonia / chemistry Biogenesis Diketopiperazines Dimerization Evolution, Chemical Formaldehyde / chemistry Glycine / chemistry* Oligopeptides / chemistry Piperazines / chemistry Pressure Temperature Water / chemistry* |
| Chemical | |
Reg. No./Substance:
|
0/Amino Acids; 0/Diketopiperazines; 0/Oligopeptides; 0/Piperazines; 50-00-0/Formaldehyde; 556-33-2/glycyl-glycyl-glycine; 56-40-6/Glycine; 7664-41-7/Ammonia; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Ischaemic mitral valve regurgitation: a surgical approach.
Next Document: Prebiotic oligomerization on or inside lipid vesicles in hydrothermal environments.