Fundamentals of non-aqueous enzymology
@inproceedings{Yang1996FundamentalsON, title={Fundamentals of non-aqueous enzymology}, author={Z. Yang and Alan J. Russell}, year={1996} }
Non-aqueous enzymology is such a rapidly developing research area that it has attracted interest from chemists, biochemists and chemical engineers. This has been reflected by an explosive growth of the literature (for reviews see Dordick, 1989; Klibanov, 1989; Blinkovsky et al., 1992; Russell et al., 1992; Halling, 1994). It is generally accepted that when enzymes are placed in organic media, they exhibit altered properties such as enhanced thermostability (Ayala et al., 1986; Wheeler and…
42 Citations
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En enzyme activation is reported herein for thermolysin, a nonserine protease, thereby demonstrating that enzyme activation due to lyophilization in the presence of KCl may be a general phenomenon for proteolytic enzymes.
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Stability studies indicated that lipase are significantly more stable in ionic liquids compared to in organic solvents, and structural characterization of the modified enzyme suggests that site-specific modification are key to retaining activity and to improving the enzyme's stability.
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The effect of 20 different solvents on the activity of CALB in the hydrolysis of p-nitrophenyl laurate was compared to show that the substrate solubility plays an important role in solvent selection.
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This newly isolated and characterized tyrosinase may have potential applications in organic synthesis due to its high activity and stability at typically denaturing conditions.
Biocatalysis in ionic liquids.
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Roger Sheldon developed the concepts of E factors and atom utilization for assessing the environmental impact of chemical processes, particularly in relation to fine chemicals production.
Ethanol acetylation by mycelium-bound carboxylesterase of Aspergillus oryzae: estimation of thermodynamic parameters and integral productivity
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- 2002
The occurrence of reversible unfolding followed by irreversible denaturation of the enzyme has been proposed to explain the increase in the starting rate of ethyl acetate formation with temperature observed up to 55 °C and the consequent fall beyond this threshold.
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The bioprocess engineering aspects of a specific chemo-enzymatic peptide synthesis route are studied and it was shown that native Alcalase degrades native CalB under aqueous conditions, and the presence of molecular sieves was found to be necessary to prevent hydrolysis.
Simplified kinetics and thermodynamics of geraniol acetylation by lyophilized cells of Aspergillus oryzae
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Mycelium-bound carboxylesterase from Aspergillus oryzae: an efficient catalyst for acetylation in organic solvent.
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