scholarly journals The Relationship between the Structure and Properties of Amino Acid Ionic Liquids

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3252 ◽  
Author(s):  
Paula Ossowicz ◽  
Joanna Klebeko ◽  
Barbara Roman ◽  
Ewa Janus ◽  
Zbigniew Rozwadowski
Keyword(s):  
Amino Acids ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Surface Activity ◽  
Spectroscopic Properties ◽  
Specific Rotation ◽  
Structure And Properties ◽  
Rotation Surface ◽  
Cation Type ◽  
The Relationship

Ionic liquids based on different l-amino acids (glycine, l-valine, l-leucine, l-isoleucine, l-histidine, l-methionine, l-tyrosine, l-tryptophan, l-arginine, and l-threonine) and different cations (tetrabutylammonium (TBA), tributylmethylammonium (tBMA), didecyldimethylammonium (DDA), (2-hydroxyethyl)trimethylammonium (choline) (Chol), alkyl(C12-C14) dimethylbenzylammonium (benzalkonium) (BA), dodecyltrimethylammonium (DDTMA), hexadecyltrimethylammonium (HDTMA), octadecyltrimethylammonium (ODTMA) and 1-ethyl-3-methylimidazolium (EMIM)) have been synthesized and characterized by NMR and FTIR. Viscosity, specific rotation, surface activity, thermal stability (TG), and phase transformations (DSC) have been determined and compared with available data. Furthermore, benzalkonium, didecyldimethylammonium, dodecyltrimethylammonium, hexadecyltrimethylammonium, and octadecyltrimethylammonium amino acid ionic liquids have been shown to exhibit surface activity. The dissolution of cellulose in amino acid ionic liquids (AAILs) composed of various cations was also investigated. Cellulose was only dissolved in EMIM salts of amino acids. In particular, the influence of the cation type on selected physicochemical and spectroscopic properties were discussed. The article is a mini review on amino acid ionic liquids.

THE RELATIONSHIP BETWEEN SOIL BACTERIA WITH SIMPLE NUTRITIONAL REQUIREMENTS AND THOSE REQUIRING AMINO ACIDS

1957 ◽  
Vol 3 (1) ◽  
pp. 73-80 ◽  
Author(s):  
T. M. B. Payne ◽  
J. W. Rouatt ◽  
A. G. Lochhead
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Soil Bacteria ◽  
Single Case ◽  
The Other ◽  
Nutritional Requirements ◽  
Soil Organisms ◽  
Specific Amino Acid ◽  
The Relationship ◽  
Maximum Development

Twenty-two of 30 representative soil bacteria having simple nutritional requirements, in that they showed maximum development in a medium of inorganic salts and sugar, were found to be able to synthesize a variety of amino acids, though in no single case were more than four ninhydrin-positive substances found. The culture filtrates permitted the growth of amino-acid-requiring bacteria to the extent that they contained the specific amino acid or acids required by strains of the latter group. The findings point to an associative action between these nutritional groups of soil organisms and suggest that the preferential stimulation in the rhizosphere of bacteria requiring amino acids may be ascribed in part to the ability of the other group of bacteria, which are numerically increased in the rhizosphere, to synthesize amino acids.

Amino acids in muscle and kidney of potassium-deficient rats

1960 ◽  
Vol 199 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Ira K. Brandt ◽  
Victor A. Matalka ◽  
Jerome T. Combs
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Amino Nitrogen ◽  
Potassium Deficiency ◽  
Experimental Diet ◽  
Basic Amino Acids ◽  
The Relationship ◽  
Predictable Variation

Muscle and kidney taken from rats with potassium-deficiency alkalosis contained a higher concentration of lysine, histidine and arginine than tissue taken from pair-fed control animals. The concentration of anserine, carnosine and alpha-amino nitrogen did not differ in the two groups. Although the concentration of virtually all of the above substances varied with the length of time that the animal had been receiving the experimental diet, the relationship between the data obtained from potassium-deficient animals and from the pair-fed controls remained constant. The results suggest that a mechanism other than replacement of lost potassium as cation may bring about the increase in the basic amino acids during potassium-deficiency alkalosis and that starvation is associated with a predictable variation in some of the amino acid constituents of the tissues.

Microwave-assisted one pot-synthesis of amino acid ionic liquids in water: simple catalysts for styrene carbonate synthesis under atmospheric pressure of CO2

2014 ◽  
Vol 4 (4) ◽  
pp. 963-970 ◽  
Author(s):  
Kuruppathparambil Roshith Roshan ◽  
Tharun Jose ◽  
Dongwoo Kim ◽  
Kathalikkattil Amal Cherian ◽  
Dae Won Park
Keyword(s):  
Amino Acids ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Atmospheric Pressure ◽  
Microwave Energy ◽  
One Pot ◽  
Microwave Assisted ◽  
One Pot Synthesis ◽  
Styrene Carbonate

A novel variety of ionic liquids based on amino acids is synthesized in water using microwave energy.

scholarly journals Renewable pyridinium ionic liquids from the continuous hydrothermal decarboxylation of furfural-amino acid derived pyridinium zwitterions

2015 ◽  
Vol 17 (8) ◽  
pp. 4151-4156 ◽  
Author(s):  
Sarah Kirchhecker ◽  
Steffen Tröger-Müller ◽  
Sebastian Bake ◽  
Markus Antonietti ◽  
Andreas Taubert ◽  
...  
Keyword(s):  
Amino Acids ◽  
Ionic Liquids ◽  
Amino Acid

Fully renewable pyridinium ionic liquids were synthesised via the hydrothermal decarboxylation of pyridinium zwitterions derived from furfural and amino acids in flow.

scholarly journals Intrinsic MRI contrast from amino acid-based paramagnetic ionic liquids

2020 ◽  
Vol 1 (6) ◽  
pp. 1980-1987
Author(s):  
Praveen Singh Gehlot ◽  
Hariom Gupta ◽  
Mangal Singh Rathore ◽  
Kusum Khatri ◽  
Arvind Kumar
Keyword(s):  
Magnetic Resonance Imaging ◽  
Amino Acids ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Dual Mode ◽  
Mri Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Natural Amino Acids

Paramagnetic ionic liquids (PMILs) comprising of natural amino acids and tetrachloroferrate(iii) as constituent ions were prepared that act as highly efficient dual mode (T1 and T2) responsive contrast agents for magnetic resonance imaging (MRI).

Increased plasma concentrations of the 5-HT precursor amino acid tryptophan and other large neutral amino acids in violent criminals

1997 ◽  
Vol 27 (2) ◽  
pp. 477-481 ◽  
Author(s):  
T. ERIKSSON ◽  
L. LIDBERG
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Plasma Concentrations ◽  
Healthy Controls ◽  
Violent Behaviour ◽  
Violent Crimes ◽  
Amino Acid Tryptophan ◽  
The Relationship ◽  
The Brain ◽  
Abnormal Brain

Background. Aggression has been suggested to be related to abnormal brain 5-HT activity. This amine is synthesized in brain from tryptophan, which is transported through the blood–brain barrier in competition with other amino acids. The relationship between tryptophan and its endogenous amino acid competitors in plasma might thus influence the availability of tryptophan in the brain and consequently brain 5-HT activity.Methods. Plasma amino acids were determined in 89 offenders who had committed various violent and non-violent crimes and in 14 healthy controls.Results. Both tryptophan and its competitors were higher in offenders who had committed violent crimes compared both with non-violent offenders and with controls. No difference was, however, seen in the relationship between tryptophan and its competitors.Conclusions. The results support the contention that violent behaviour is related to biochemical deviations but could not explain a possible decreased brain 5-HT activity.

scholarly journals The relationship between placental protein synthesis and transfer of amino acids

1983 ◽  
Vol 210 (1) ◽  
pp. 99-105 ◽  
Author(s):  
M J Carroll ◽  
M Young
Keyword(s):  
Amino Acids ◽  
Protein Synthesis ◽  
Amino Acid ◽  
Guinea Pig ◽  
Specific Radioactivity ◽  
Protein Amino Acid ◽  
Naturally Occurring ◽  
Placental Protein ◽  
The Relationship ◽  
Radioactivity Measurements

The relationship between placental protein synthesis and transfer of amino acids from mother to foetus was studied in the guinea pig, by using [U-14C]-lysine, -leucine, -glycine, -aspartate and -alpha-aminoisobutyrate. The uptake of label by protein was 12-16% of total label transferred. Cycloheximide inhibited incorporation of all naturally occurring amino acids into protein by 81-96% and transfer by 62-75%; the concentration of label in the free pool was increased for each. These findings were confirmed when specific-radioactivity measurements were made with L-[U-14C]lysine. The transfer of the non-protein amino acid alpha-aminoisobutyrate was not significantly decreased by cycloheximide. A model, linking protein synthesis to the generation of a transfer pool of amino acids, is proposed whereby inhibition of protein synthesis decreases the amount of amino acid available for transfer.

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