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Enzymecatalyzed regioselective synthesis of sucrosebased esters
Oct 3, 2011 ... and other reaction conditions on the yield and regioselectivity of enzymatic synthesis of sucrose-based esters. BIOCATALYSTS FOR THE ...
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Enzyme Catalyzed Regioselective Synthesis of Sucrose Fatty Acid
A commercial subtilisin preparation was used in pyridine to catalyze the regioselective conversion of sucrose and fatty acid vinyl esters into the l'-O-acyl sucrose derivatives. .... accurate analysis of sucrose based surfactants. The CMC values ...
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Lipase-catalyzed regioselective synthesis of palmitolyglucose ester
However, the organic solvents used in the enzymatic synthesis (e.g. ... lipase- catalyzed transesterification of glucose with palmitic ..... catalyzed regioselective synthesis of sucrose vinyl adi- ... based on organic salts of the dicyanamide anion .
[ ABC20120300002_95526689.pdf - Read/Download File

Syntheses and applications of sucrose-based esters | SpringerLink
Fatty acid sucrose estersreviewsucrosesucrose sulfatessurfactants .... and R.J. Linhardt, Enzyme-Catalyzed Regioselective Synthesis of Sucrose Fatty Acid Ester ...
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Enzymatic acylation of di- and trisaccharides with fatty acids
The enzyme-catalyzed synthesis of sugar esters provides regio- and stereoselective products (Cruces ... The first is based on the use of organic solvents suitable for the ..... catalyzed regioselective acylation of sucrose in two- solvent mixtures.
[ SUCROSE-ESTERS-digitalCSIC.pdf - Read/Download File

Biocatalysis and enzymes in organic synthesis - General Guide To
review of 1994 and so adopts the same format based on enzyme type rather than ... and catalyzes the formation of a wide range of ester and amide bonds (Table 2 ) .... Pseudomonas cepacia lipase (PCL) for the regioselective acyl- ation of ..... enzyme system uses sucrose synthase driven in reverse to give glucosyl UDP ...
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LINK - Linhardt
of Sucrose-Based Esters. Tülay Polat ... and enzymatic syntheses of nonionic, anionic, and amphoteric sugar-based ... The synthesis of long-chain fatty acid sucrose monoesters was one of the .... REGIOSELECTIVE ENZYMATIC SYNTHESIS. OF FATTY ... The yield of lipase-catalyzed sucrose esterifications could also be ...
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Chemical versus enzymatic catalysis for the regioselective synthesis
Sep 2, 2007 ... Chemical versus enzymatic catalysis for the regioselective synthesis of sucrose ... two processes for the regioselective synthesis of sucrose monoesters. ... The second is chemical, and is based on the use of simple basic ...
[ 1-s2.0-S0167299100810083-main.pdf?_tid=4480923e-b295-11e4-ae53-00000aab0f02&acdnat=1423731669_adaeae687ea7ceb0173fcc6165b7a06c - Read/Download File

Enhanced production of fructose ester by biocatalyzed continuous
catalyzed sugar ester synthesis becomes an interesting strategy for producing ..... Enzyme-catalyzed regioselective synthesis of sucrose- based esters.
[ s40508-015-0031-8.pdf - Read/Download File

Lipase mediated synthesis of sugar fatty acid esters - University of
Aug 4, 2011 ... This review is concerned with lipase catalyzed synthesis of sugar ...... of carbohydrate-based amphiphilic materials: the examples of sucrose and ... Enzyme catalyzed regioselective synthesis of sugar esters and related com-.
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Regioselective Enzymatic Acylation of Multi-hydroxyl Compounds in
rapidly growing area, enzymatic catalysis in synthetic organic chemistry and then review researches that ... Keywords: enzymatic synthesis, regioselective synthesis, sugar acylation, glycoside, drug modification, .... Monoesters or diesters of disaccharides such as sucrose ... based polymers having highly regular structures.
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Solvent-Free Lipase-Catalyzed Synthesis of Technical-Grade Sugar
May 30, 2016 ... Abstract: Technical-grade oleic acid esters of sucrose and fructose were prepared using solvent-free ... (81% and 83% ester, respectively), the enzymatic reaction conditions was ... due to differences in regioselectivity between the lipases. ... We utilized the solvent-free suspension-based medium in a.
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Maximization of fructose esters synthesis by response surface
central composite rotatable design based on five levels was implemented to optimize three experimental operating conditions ... cessfully applied to the regioselective transformations of mono- ... The enzyme-catalyzed synthesis of sugar esters provides ... various sugar esters (e.g. fructose or sucrose esters) can now be.
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Sucrose Derivatives Preparation using Thermomyces lanuginosus
enzymes for synthesis of sucrose esters gained much atten- tion.4 The chemical ... regioselective esterification of sucrose using chemical cata- lyst is quite difficult but ... enzymatic synthesis of sugar esters catalyzed by lipases8-12 have been reported. ... matic synthesis strategy to prepare sucrose-based vinyl esters using  ...
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Sugar Ester Surfactants: Enzymatic Synthesis and Applications in
surfactants based on fats, oils, and sugars on a bigger industrial ... cose, fructose, and sucrose is achieved through the transester- ... On the contrary, enzymatic sugar ester synthesis is a one-step .... Lipases typically catalyze the hydrolysis of lipids in aqueous ... regioselectivity and mild reaction conditions of the enzymatic.
[ 10408398.2012.667461 - Read/Download File

chemoenzymatic synthesis of biodegradable poly(1'-o-vinyladipoyl
Specifically enzyme-catalyzed regioselective acylation of sucrose in organic media ... polymerized to yield a sucrose-based polyacrylatep'sl. ... Enzymatic synthesis of vinyl sucrose ester and its chemical polymerization was shown in Fig . 1.
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Enzymatic Synthesis of Carbohydrates Fatty Acid Esters in a Highly
The application of enzymatic catalysis for the synthesis of carbohydrate fatty acid esters has been investigated ... systems (Cao et al, 1999) and in solvent based systems .... Lipase-Catalyzed Regioselective Acylation of Sucrose in Two-Solvent .
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Journal of Sciences Kinetic Investigation of Enzymatic Synthesis of
Jul 7, 2014 ... Esters from Sucrose and Non-edible Rice Bran Fatty Acid. 1Anju Yadav ... Enzymatic sugar esters synthesis is based on esterification reaction ...
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Synthesis of lipase-catalyzed saccharide-fatty acid esters - Trace
synthesis mode, and was applied to the lipase-catalyzed esterification reaction ... 2.2 – The Enzymatic Reaction Scheme for Saccharide-Fatty Acid Ester .... 3.2 Chemical structures of sucrose, fructose xylose and glucose…………………....37 ..... One of the goals of this thesis is to build a packed bed reactor-based system for.
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Title Lipase-catalyzed syntheses of sugar esters in non-aqueous
There are various methods to efficiently synthesize esters, and the enzymatic syntheses of sugar ... The lipase-catalyzed synthesis of sugar esters by dehydrative ... Based on these concepts, lipase-catalyzed syntheses have been performed to ..... disaccharide such as sucrose or lactose, maltose, an oligosaccharide such as ...
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