Hofmeister series of ionic liquids: kosmotropic effect of ionic liquids on the enzymatic hydrolysis of enantiomeric phenylalanine methyl ester

2006 ◽  
Vol 17 (3) ◽  
pp. 377-383 ◽  
Author(s):  
Hua Zhao ◽  
Sophia M. Campbell ◽  
Lee Jackson ◽  
Zhiyan Song ◽  
Olarongbe Olubajo
Keyword(s):  
Ionic Liquids ◽  
Methyl Ester ◽  
Enzymatic Hydrolysis ◽  
Hofmeister Series ◽  
Phenylalanine Methyl Ester ◽  
Hydrolysis Of

scholarly journals Enzymatic hydrolysis of chicken viscera proteins in the presence of an ionic liquid as a strategy to improve the antioxidant properties of the hydrolysates

2019 ◽  
Author(s):  
Vitor Geniselli da Silva ◽  
Ruann Janser Soares de Castro
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Protein Hydrolysates ◽  
Tetramethylammonium Bromide ◽  
Chicken Viscera ◽  
Hydrolysis Of

Aiming to explore the use of ionic liquids (ILs) not yet described in the literature, this work evaluated the hydrolysis of proteins from chicken viscera using the protease Alcalase modified and unmodified by the IL tetramethylammonium bromide. The protein hydrolysates produced in the presence of the IL presented values of antioxidant activities 40% higher than the hydrolysates obtained without IL. In addition, with the presence of the IL, it was possible to obtain protein hydrolysates from chicken viscera with similar antioxidant activities, compared to the protein hydrolysates produced without IL, using 1/3 of the amount of enzyme.

Enzymatic hydrolysis of penicillin G in ionic liquids

2008 ◽  
Vol 136 ◽  
pp. S391
Author(s):  
Mai Ngoc Lan ◽  
Sung Ho Ha ◽  
Yoon-Mo Koo
Keyword(s):  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Penicillin G ◽  
Hydrolysis Of

scholarly journals Comparative studies of the specificities of α-chymotrypsin and subtilisin BPN′. Studies with flexible substrates

1972 ◽  
Vol 126 (3) ◽  
pp. 645-657 ◽  
Author(s):  
T. N. Pattabiraman ◽  
W. B. Lawson
Keyword(s):  
Methyl Ester ◽  
Binding Site ◽  
Comparative Studies ◽  
Detrimental Effect ◽  
Flexible Substrates ◽  
Enhancing Effect ◽  
Wide Range ◽  
Phenylalanine Methyl Ester ◽  
Hydrolysis Of ◽  
Tryptophan Methyl Ester

A series of arylalkanoate esters and α-acetamidoarylalkanoate esters were tested as substrates for α-chymotrypsin and subtilisin BPN′. Chymotrypsin hydrolysed N-acetyl-l-phenylalanine methyl ester and methyl 4-phenylbutyrate faster than their respective higher and lower homologues, whereas methyl 2-acetamido-6-phenylhexanoate and methyl 6-phenylhexanoate were better substrates for subtilisin than their lower homologues. N-Acetyl-l-tryptophan methyl ester and its analogue, N-acetyl-3-(1-naphthyl)-alanine methyl ester, were hydrolysed 23 times faster by chymotrypsin than by subtilisin. These results indicate that the binding site of α-chymotrypsin is roughly 1.1nm (11Å) long and curved, whereas that of subtilisin is a longer system and less curved. The stereo-specificity during the hydrolysis of typical substrates by both enzymes was found to vary over a wide range. The enhancing effect of the α-acetamido group in the l-series of substrates and the detrimental effect in the d-series of substrates also varies considerably.

scholarly journals Insight into the esterase like activity demonstrated by an imidazole appended self-assembling hydrogelator

2015 ◽  
Vol 51 (67) ◽  
pp. 13213-13216 ◽  
Author(s):  
Nishant Singh ◽  
Maria P. Conte ◽  
R. V. Ulijn ◽  
Juan F. Miravet ◽  
Beatriu Escuder
Keyword(s):  
Methyl Ester ◽  
Self Assembling ◽  
Phenylalanine Methyl Ester ◽  
First Time ◽  
Hydrolysis Of ◽  
Insight Into

Hydrolysis of unactivated phenylalanine methyl ester by a simple imidazole appended hydrogelator is reported for the first time.

scholarly journals Enzymatic Hydrolysis of Cellulose after Pretreated by Ionic Liquids: Focus on One-pot Process

2012 ◽  
Vol 14 ◽  
pp. 1741-1747 ◽  
Author(s):  
Suli Zhi ◽  
Yanli Liu ◽  
Xiaoyan Yu ◽  
Xinying Wang ◽  
Xuebin Lu
Keyword(s):  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
One Pot ◽  
Enzymatic Hydrolysis Of Cellulose ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Enzymatic hydrolysis of Asclepias syriaca fibers in the presence of ionic liquids

2010 ◽  
Vol 141 (9) ◽  
pp. 1043-1048 ◽  
Author(s):  
Ruxanda Bodirlau ◽  
Carmen-Alice Teaca ◽  
Iuliana Spiridon
Keyword(s):  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Asclepias Syriaca ◽  
Hydrolysis Of
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