Amino Acids

Abstract

The article contains sections titled: 1. Introduction and History 2. Properties 2.1. Physical Properties and Structure 2.2. Chemical Properties 2.3. Important Amino Acids 2.3.1. Proteinogenic Amino Acids 2.3.2. Other Important Amino Acids 3. Industrial Production of Amino Acids 3.1. General Methods 3.2. Production of Specific Amino Acids 3.2.1. l ‐Alanine 3.2.2. l ‐Arginine 3.2.3. l ‐Aspartic Acid and Asparagine 3.2.4. l ‐Cystine and l ‐Cysteine 3.2.5. l ‐Glutamic Acid 3.2.6. l ‐Glutamine 3.2.7. l ‐Histidine 3.2.8. l ‐Hydroxyproline 3.2.9. l ‐Isoleucine 3.2.10. l ‐Leucine 3.2.11. l ‐Lysine 3.2.12. d , l ‐Methionine and l ‐Methionine 3.2.13. l ‐Phenylalanine 3.2.14. l ‐Proline 3.2.15. l ‐Serine 3.2.16. l ‐Threonine 3.2.17. l ‐Tryptophan 3.2.18. l ‐Tyrosine 3.2.19. l ‐Valine 4. Biochemical and Physiological Significance 5. Uses 5.1. Human Nutrition 5.1.1. Supplementation 5.1.2. Flavorings, Taste Enhancers, and Sweeteners 5.1.3. Other Uses in Foodstuff Technology 5.2. Animal Nutrition 5.3. Pharmaceuticals 5.3.1. Nutritive Agents 5.3.2. Therapeutic Agents 5.4. Cosmetics 5.5. Agrochemicals 5.5.1. Herbicides 5.5.2. Fungicides 5.5.3. Insecticides 5.5.4. Plant Growth Regulators 5.6. Industrial Uses 6. Chemical Analysis 7. Economic Significance 8. Toxicology

Measurement and Modeling Solubility of Aqueous Multisolute Amino-Acid Solutions

“…5,26,37 The same is valid for glycine. Comparing L-leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for L-tyrosine (Drauz et al 37 at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober 5 at 298 K) with data from Carta and Tola gives an ARD of 5.17%. These differences in the single-solute data can also be observed in the ternary systems.…”

“…One data set used was measured by Carta . Figures and (solubilities of l -leucine and l -tyrosine in water) already reveal that the data from Carta and Tola differ from other data. ,, The same is valid for glycine. Comparing l -leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for l -tyrosine (Drauz et al at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober at 298 K) with data from Carta and Tola gives an ARD of 5.17%.…”

Measurement and Modeling Solubility of Aqueous Multisolute Amino-Acid Solutions

“…5,26,37 The same is valid for glycine. Comparing L-leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for L-tyrosine (Drauz et al 37 at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober 5 at 298 K) with data from Carta and Tola gives an ARD of 5.17%. These differences in the single-solute data can also be observed in the ternary systems.…”

“…One data set used was measured by Carta . Figures and (solubilities of l -leucine and l -tyrosine in water) already reveal that the data from Carta and Tola differ from other data. ,, The same is valid for glycine. Comparing l -leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for l -tyrosine (Drauz et al at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober at 298 K) with data from Carta and Tola gives an ARD of 5.17%.…”

Effect of Chiral Ligand Concentration and Binding Mode on Chiroptical Activity of CdSe/CdS Quantum Dots

“…It has the form of three double doublets (Figure a), corresponding to a H atom bound to a C 2 atom with a chemical shift of 2.97 ppm ( 1 H C ), and two H atoms bound to C 3 , which are chemically inequivalent, with 2.33 and 2.75 ppm chemical shifts ( 1 H A and 1 H B , respectively). The carboxylic and thiol groups are deprotonated at pH 13 (p K a = 1.71 for −COOH and p K a = 8.27 for −SH), and accordingly, the 1 H NMR spectra did not display any signals arising from protons on these groups. We note that the 1 H NMR peak of the amino group is not usually observed in aqueous solutions. , …”

Molecular Complexity Heuristic Suggests That Thermochemistry Will Play an Important Role in the Decarbonization of Simple Chemical Commodities

“…We use the term bioproduction to encompass the bioprocess categories hybrid and fermentation as well as the use of thermochemistry with agricultural feedstocks, thermochemical-ag. A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to l -aspartic acid or the enzymatic hydrolysis of starch to d -glucose . Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”

“…A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to L-aspartic acid or the enzymatic hydrolysis of starch to D-glucose. 32 Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”

Measurement and Modeling Solubility of Aqueous Multisolute Amino-Acid Solutions

“…5,26,37 The same is valid for glycine. Comparing L-leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for L-tyrosine (Drauz et al 37 at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober 5 at 298 K) with data from Carta and Tola gives an ARD of 5.17%. These differences in the single-solute data can also be observed in the ternary systems.…”

“…One data set used was measured by Carta . Figures and (solubilities of l -leucine and l -tyrosine in water) already reveal that the data from Carta and Tola differ from other data. ,, The same is valid for glycine. Comparing l -leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for l -tyrosine (Drauz et al at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober at 298 K) with data from Carta and Tola gives an ARD of 5.17%.…”

Effect of Chiral Ligand Concentration and Binding Mode on Chiroptical Activity of CdSe/CdS Quantum Dots

“…It has the form of three double doublets (Figure a), corresponding to a H atom bound to a C 2 atom with a chemical shift of 2.97 ppm ( 1 H C ), and two H atoms bound to C 3 , which are chemically inequivalent, with 2.33 and 2.75 ppm chemical shifts ( 1 H A and 1 H B , respectively). The carboxylic and thiol groups are deprotonated at pH 13 (p K a = 1.71 for −COOH and p K a = 8.27 for −SH), and accordingly, the 1 H NMR spectra did not display any signals arising from protons on these groups. We note that the 1 H NMR peak of the amino group is not usually observed in aqueous solutions. , …”

Molecular Complexity Heuristic Suggests That Thermochemistry Will Play an Important Role in the Decarbonization of Simple Chemical Commodities

“…We use the term bioproduction to encompass the bioprocess categories hybrid and fermentation as well as the use of thermochemistry with agricultural feedstocks, thermochemical-ag. A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to l -aspartic acid or the enzymatic hydrolysis of starch to d -glucose . Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”

“…A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to L-aspartic acid or the enzymatic hydrolysis of starch to D-glucose. 32 Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”

Measurement and Modeling Solubility of Aqueous Multisolute Amino-Acid Solutions

“…5,26,37 The same is valid for glycine. Comparing L-leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for L-tyrosine (Drauz et al 37 at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober 5 at 298 K) with data from Carta and Tola gives an ARD of 5.17%. These differences in the single-solute data can also be observed in the ternary systems.…”

“…One data set used was measured by Carta . Figures and (solubilities of l -leucine and l -tyrosine in water) already reveal that the data from Carta and Tola differ from other data. ,, The same is valid for glycine. Comparing l -leucine (our data at 298 K) with data presented by Carta and Tola gives an ARD of 8.37%, comparing data for l -tyrosine (Drauz et al at 298 K) with data from Carta and Tola gives an ARD of 37.83%, and comparing data for glycine (Sober at 298 K) with data from Carta and Tola gives an ARD of 5.17%.…”

Effect of Chiral Ligand Concentration and Binding Mode on Chiroptical Activity of CdSe/CdS Quantum Dots

“…It has the form of three double doublets (Figure a), corresponding to a H atom bound to a C 2 atom with a chemical shift of 2.97 ppm ( 1 H C ), and two H atoms bound to C 3 , which are chemically inequivalent, with 2.33 and 2.75 ppm chemical shifts ( 1 H A and 1 H B , respectively). The carboxylic and thiol groups are deprotonated at pH 13 (p K a = 1.71 for −COOH and p K a = 8.27 for −SH), and accordingly, the 1 H NMR spectra did not display any signals arising from protons on these groups. We note that the 1 H NMR peak of the amino group is not usually observed in aqueous solutions. , …”

Molecular Complexity Heuristic Suggests That Thermochemistry Will Play an Important Role in the Decarbonization of Simple Chemical Commodities

“…We use the term bioproduction to encompass the bioprocess categories hybrid and fermentation as well as the use of thermochemistry with agricultural feedstocks, thermochemical-ag. A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to l -aspartic acid or the enzymatic hydrolysis of starch to d -glucose . Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”

“…A few data points include enzymatic bioprocesses, for example, the conversion of fumaric acid and ammonia to L-aspartic acid or the enzymatic hydrolysis of starch to D-glucose. 32 Since only three enzymatic steps are represented in this data set, the enzymatic category is collapsed into the others depending on the feedstock type and additional steps.…”