scholarly journals Development of the NSAID-L-Proline Amino Acid Zwitterionic Cocrystals

2018 ◽  
pp. 57-63 ◽  
Keyword(s):  
Amino Acid ◽  
Proline Amino Acid

scholarly journals Variation in Chemicals and Growth Parameters of Taşköprü Garlic

2020 ◽  
Vol 8 (4) ◽  
pp. 847-854
Author(s):  
Nezahat Turfan
Keyword(s):  
Amino Acid ◽  
Bioactive Compounds ◽  
Soluble Protein ◽  
Amylase Activity ◽  
Growth Parameters ◽  
Soluble Sugars ◽  
Total Phenolic ◽  
Glucose Content ◽  
Proline Amino Acid ◽  
Β Carotene

Main goals of the present study were (1) to initially investigate the nutrient contents and bioactive compounds in the bulb and cloves of garlic, and (2) to study the growth parameter after planting. Garlic bulbs were firstly separated into three categories as pickled, big and small, while the big garlic cloves were also classified into three categories as big, small and central. Secondly, the garlic samples were analyzed before planting for their element profile, proline, soluble protein, free amino acid, β-carotene, lycopene, total phenolic, soluble sugars, SOD and α-amylase activities. Finally, the growth parameters were measured using the cultivated cloves and the pickled bulbs. According to the result, the highest soluble protein, N, phenolic, lycopene and α amylase activity (97.06 mg, 2.58%, 971 mg, 0.368 mg and 38.13 EU, respectively) were recorded in the biggest cloves. The highest proline, amino acid, glucose content (93.84 µmol, 23.54 mg, 230.89 mg, respectively) and K, P, S, Mg, Mn, Fe and Zn (21940 ppm, 7577 ppm, 12200 ppm, 504 ppm, 38.1ppm, 377,7ppm and 44.5 ppm, respectively) were found in the pickled bulb. The maximum level of β-carotene (0.282 mg), Ca, Cl and Sr (11260ppm, 818.7ppm and 47.9 ppm) were determined in the small bulbs. Based on the growth parameters of seedlings, the highest value of shoot and root length (39.12 cm and 24.11 cm respectively), the fresh weight of shoot and root (5.29 g and 4.54 g respectively) and dry weight of shoot and root (1.70 g and 1.24 g respectively) were noted with the big cloves. The results of the current study have indicated that the pickled cloves have higher macro and micro nutrients, proline, amino acid and glucose, while the big cloves of garlic have higher proline, phenolic, N%, lycopene and amylase activity. It can be said that the big cloves showed good value for the five bioactive compounds, but the pickled exhibited good value for the macro and micro element and glucose.

scholarly journals The role of pH in corrosion inhibition of tin using the proline amino acid: theoretical and experimental investigations

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29696-29704 ◽  
Author(s):  
Brahim EL Ibrahimi ◽  
Lahcen Bazzi ◽  
Souad EL Issami
Keyword(s):  
Amino Acid ◽  
Corrosion Inhibition ◽  
Experimental Investigations ◽  
Interfacial Interactions ◽  
Proline Amino Acid ◽  
Tin Metal

Herein, the effect of a mediums' pH on the interfacial interactions between proline (Pro) amino acid and tin metal was studied.

Intestinal apical amino acid absorption during development of the pig

2001 ◽  
Vol 280 (1) ◽  
pp. R241-R247 ◽  
Author(s):  
Randal K. Buddington ◽  
Jan Elnif ◽  
Anna A. Puchal-Gardiner ◽  
Per T. Sangild
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Regional Differences ◽  
Apical Membrane ◽  
Saturable Absorption ◽  
Acid Absorption ◽  
Amino Acid Absorption ◽  
Apparent Diffusion ◽  
Proline Amino Acid ◽  
Small Intestines

Amino acids originating from the diet are the principal metabolic fuels for the small intestine, and although the developing intestine is exposed to dramatic changes in the types and amounts of protein, there is little known about rates of amino acid absorption across the apical membrane during development. Therefore, rates of absorption were measured for five amino acids that are substrates for the acidic (aspartate), basic (lysine), neutral (leucine and methionine), and imino (proline) amino acid carriers using intact tissues from the proximal, mid-, and distal small intestines of pigs ranging in age from 90% of gestation to 42 days after birth (12 days after weaning). Rates of absorption (sum of carrier-mediated and apparent diffusion) were highest at birth (except for proline) and declined by an average of 30% during the first 24 h of suckling. There were continuing declines for leucine, methionine, and proline but not for aspartate and lysine. Due to rapid growth of the intestine, absorption capacities for all amino acids increased faster than predicted from gains in metabolic mass. Regional differences for rates of absorption were not detected until after birth, and only for aspartate and proline. Maximum rates of saturable absorption (nmol · min−1 · mg tissue−1) by the midintestine increased during the last 10% of gestation, were highest at birth, and then declined. The contribution of apparent diffusion to amino acid absorption was lowest at birth, then increased after onset of suckling.

Comment on: “Valence ionization of l-proline amino acid: Experimental and theoretical study” by F. Fathi, H. Farrokhpour, Chem. Phys. Lett. 565 (2013) 102

2014 ◽  
Vol 601 ◽  
pp. 186-187 ◽  
Author(s):  
Oksana Plekan ◽  
Vitaliy Feyer ◽  
Robert Richter ◽  
Marcello Coreno ◽  
Monica de Simone ◽  
...  
Keyword(s):  
Amino Acid ◽  
Theoretical Study ◽  
Chem Phys ◽  
Proline Amino Acid

scholarly journals A mechanochemical approach to access the proline–proline diketopiperazine framework

2017 ◽  
Vol 13 ◽  
pp. 2169-2178 ◽  
Author(s):  
Nicolas Pétry ◽  
Hafid Benakki ◽  
Eric Clot ◽  
Pascal Retailleau ◽  
Farhate Guenoun ◽  
...  
Keyword(s):  
Amino Acid ◽  
Dft Calculations ◽  
Nucleophilic Substitution ◽  
Ball Milling ◽  
Building Block ◽  
Ball Mill ◽  
Amino Acid Derivatives ◽  
Solvent Free Conditions ◽  
Proline Amino Acid ◽  
High Stereoselectivity

Ball milling was exploited to prepare a substituted proline building block by mechanochemical nucleophilic substitution. Subsequently, the mechanocoupling of hindered proline amino acid derivatives was developed to provide proline–proline dipeptides under solvent-free conditions. A deprotection–cyclization sequence yielded the corresponding diketopiperazines that were obtained with a high stereoselectivity which could be explained by DFT calculations. Using this method, an enantiopure disubstituted Pro–Pro diketopiperazine was synthesized in 4 steps, making 5 new bonds using a ball mill.

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