Synthesis of ester oligomer by Aspergillus niger lipase.

Okumura, Susumu; Iwai, Mieko; Tominaga, Yoshio

doi:10.1271/bbb1961.48.2805

Cited by 80 publications

(36 citation statements)

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“…3) For example, dehydration polymerization of adipic acid and 1,4-butanediol in diisopropyl ether gave a polyester with degree of polymerization (DP) of 20 (p = q = 4, Scheme 29). 109) It is notable that lipase is active in ionic liquids and a dehydration polymerization gave effectively the product polyester.…”

Section: Condensation Polymerizationmentioning

confidence: 99%

Lipase-catalyzed polyester synthesis - A green polymer chemistry

Kobayashi

2010

Proc. Jpn. Acad., Ser. B

164

110

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This article is a short comprehensive review describing in vitro polyester synthesis catalyzed by a hydrolysis enzyme of lipase, most of which has been developed for these two decades. Polyesters are prepared by repeated ester bond-formation reactions; they include two major modes, ring-opening polymerization (ROP) of cyclic monomers such as cyclic esters (lactones) and condensation polymerization via the reaction between a carboxylic acid or its ester group and an alcohol group. Polyester synthesis is, therefore, a reaction in reverse way of in vivo lipase catalysis of ester bond-cleavage with hydrolysis. The lipase-catalyzed polymerizations show very high chemo-, regio-, and enantio-selectivities and involve various advantageous characteristics. Lipase is robust and compatible with other chemical catalysts, which allows novel chemo-enzymatic processes. New syntheses of a variety of functional polyesters and a plausible reaction mechanism of lipase catalysis are mentioned. The polymerization characteristics are of green nature currently demanded for sustainable society, and hence, desirable for conducting ‘green polymer chemistry’.

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Section: Condensation Polymerizationmentioning

confidence: 99%

Lipase-catalyzed polyester synthesis - A green polymer chemistry

Kobayashi

2010

Proc. Jpn. Acad., Ser. B

164

110

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“…Okumara and co -workers [10] were the fi rst to attempt the lipase -catalyzed synthesis of oligoesters from reactions between diols (AA) and dicarboxylic acids (BB). They showed that ' trimer ' , ' pentamer ' , and ' heptamer ' consisting of AA -BB -AA, AA -BB -AA -BB -AA, and AA -BB -AA -BB -AA -BB -AA, respectively, were formed.…”

Section: Aa -Bb Type Enzymatic Polyesterifi Cationmentioning

confidence: 99%

“…[10] were the fi rst to attempt the enzyme -catalyzed synthesis of oligoesters from a reaction between dicarboxylic acids and diols. Gutman et al .…”

Section: Introductionmentioning

confidence: 99%

Enzymatic Polymerization of Polyester

Miletić¹,

Loos²,

Gross³

2010

Biocatalysis in Polymer Chemistry

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“…Okumara et al (1984) were the first to attempt the enzymecatalyzed synthesis of oligoesters from a reaction between dicarboxylic acids and diols. Gutman et al (1987) reported the first study on polyester synthesis by enzyme-catalyzed polymerization of A-B type monomers.…”

Section: Enzymatic Polymerizationsmentioning

confidence: 99%

Immobilization of biocatalysts for enzymatic polymerizations: Possibilities, advantages, applications

Miletić¹,

Nastasović

Loos

2012

Bioresource Technology

188

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a b s t r a c tBiotechnology also holds tremendous opportunities for realizing functional polymeric materials. Biocatalytic pathways to polymeric materials are an emerging research area with not only enormous scientific and technological promise, but also a tremendous impact on environmental issues. Many of the enzymatic polymerizations reported proceed in organic solvents. However, enzymes mostly show none of their profound characteristics in organic solvents and can easily denature under industrial conditions. Therefore, natural enzymes seldom have the features adequate to be used as industrial catalysts in organic synthesis. The productivity of enzymatic processes is often low due to substrate and/or product inhibition. An important route to improving enzyme performance in non-natural environments is to immobilize them.In this review we will first summarize some of the most prominent examples of enzymatic polymerizations and will subsequently review the most important immobilization routes that are used for the immobilization of biocatalysts relevant to the field of enzymatic polymerizations.

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Synthesis of ester oligomer by Aspergillus niger lipase.

Abstract: Lipase from Aspergillus niger NRRL337 catalyzed the synthesis of esters from various dicarboxylic acids and diols. Amongthe esters synthesized, those from 1,13-tridecanedioic acid and 1,3-propanediol were separated by gel permeation chromatography. The constitution of the

Cited by 80 publications

References 0 publications

Lipase-catalyzed polyester synthesis - A green polymer chemistry

Lipase-catalyzed polyester synthesis - A green polymer chemistry

Enzymatic Polymerization of Polyester

Immobilization of biocatalysts for enzymatic polymerizations: Possibilities, advantages, applications

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