Polysaccharide Biocatalysis: From Synthesizing Carbohydrate Standards to Establishing Characterization Methods

Ćirić, Jelena; Petrović, Dejan M.; Loos, Katja

doi:10.1002/macp.201300801

Cited by 7 publications

(5 citation statements)

References 130 publications

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“…At present, 4 enzyme classes, oxidoreductases, transferases, hydrolases and ligases, are identified to induce or catalyze polymerizations ( Table 3 ) [ 200 ]. Many polymers are successfully synthesized via enzymatic polymerizations, for example, vinyl polymers [ 38 , 201 ], polysaccharides [ 202 , 203 , 204 , 205 ], polyesters [ 42 , 44 ] and polyamides [ 206 , 207 , 208 ]. Among them, polyesters are the most extensively studied polymers in enzymatic polymerization; and lipases are the most efficient biocatalysts for enzymatic polymerization of polyesters [ 42 ].…”

Section: Enzyme-catalyzed Synthesis Of Polyestersmentioning

confidence: 99%

Enzymatic Synthesis of Biobased Polyesters and Polyamides

2016

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Nowadays, "green" is a hot topic almost everywhere, from retailers to universities to industries; and achieving a green status has become a universal aim. However, polymers are commonly considered not to be "green", being associated with massive energy consumption and severe pollution problems (for example, the "Plastic Soup") as a public stereotype. To achieve green polymers, three elements should be entailed: (1) green raw materials, catalysts and solvents; (2) eco-friendly synthesis processes; and (3) sustainable polymers with a low carbon footprint, for example, (bio)degradable polymers or polymers which can be recycled or disposed with a gentle environmental impact. By utilizing biobased monomers in enzymatic polymerizations, many advantageous green aspects can be fulfilled. For example, biobased monomers and enzyme catalysts are renewable materials that are derived from biomass feedstocks; enzymatic polymerizations are clean and energy saving processes; and no toxic residuals contaminate the final products. Therefore, synthesis of renewable polymers via enzymatic polymerizations of biobased monomers provides an opportunity for achieving green polymers and a future sustainable polymer industry, which will eventually play an essential role for realizing and maintaining a biobased and sustainable society.

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Section: Enzyme-catalyzed Synthesis Of Polyestersmentioning

confidence: 99%

Enzymatic Synthesis of Biobased Polyesters and Polyamides

2016

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“…Highly branched polysaccharides hold a high amount of functional groups per molecule, [14][15][16] which is especially attractive for industrial purposes, 17 offering high functionality, 18,19 broad variety of functional groups, high solubility, and unique rheological behavior. [20][21][22][23][24][25][26][27] Therefore, branched polysaccharides seem to be an appropriate choice for developing a performance coating material based on renewable biomass-derived hyper-branched polysaccharides.…”

Section: Introductionmentioning

confidence: 99%

Bio‐based polyurethane films using white dextrins

Konieczny

Loos²

2019

J of Applied Polymer Sci

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Several new eco-friendly materials have the potential to replace conventional petroleum-derived materials and monomers. Among them are natural polysaccharides. The use of polysaccharides in polyurethane (PU) synthesis has not yet been studied extensively, even though as multihydroxyl compounds, they can easily serve as crosslinkers in PU synthesis. One naturally occurring (hyper-) branched polymer is amylopectin, a component of starch. In this work, we report the PU synthesis and film-forming capacity using the asymmetric cyclic aliphatic diisocyanate-isophorone diisocyanate (IPDI) with acetylated and pristine partially hydrolyzed amylopectin/ white dextrin (AVEDEX W80) as a crosslinker.

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“…Besides the straightforward and eco-friendly synthesis, it is also of great importance to find a good analytical approach for the characterization of such obtained oligocellulose products. Several techniques can be used for the determination of the oligocellulose molar mass distribution, such as 1 H NMR, size-exclusion chromatography (SEC), or matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF MS) . The average DP of low molar mass cellulose can be determined via 1 H NMR, as reported before .…”

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confidence: 99%

“…Several techniques can be used for the determination of the oligocellulose molar mass distribution, such as 1 H NMR, size-exclusion chromatography (SEC), or matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF MS). 15 The average DP of low molar mass cellulose can be determined via 1 H NMR, as reported before. 16 SEC is probably the most commonly used method for the analysis and characterization of poly-and oligosaccharides.…”

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Characterization of Oligocellulose Synthesized by Reverse Phosphorolysis Using Different Cellodextrin Phosphorylases

et al. 2015

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Much progress was made in the straightforward and eco-friendly enzymatic synthesis of shorter cellulose chains (oligocellulose). Here, we report the determination of a molar mass distribution of the oligocellulose synthesized from cellobiose (CB) and α-glucose 1-phosphate by reverse phosphorolysis, using enzymes cellodextrin phosphorylase from Clostridium stercorarium or Clostridium thermocellum as catalyst. The oligocellulose molar mass distribution was analyzed using three different methods: (1)H NMR spectroscopy, matrix assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-ToF MS) and size exclusion chromatography (SEC). The molar mass distribution of the synthesized oligocellulose was only dependent on the concentration of cellobiose used in the reaction. Data obtained from MALDI-ToF MS and SEC were almost identical and showed that oligocellulose synthesized using 10 mM CB has an average degree of polymerization (DPn) of ∼7, while a DPn of ∼14 was achieved when 0.2 mM CB was used in the reaction. Because of solvent limitation in SEC analysis, MALDI-ToF MS was shown to be the technique of choice for accurate, easy and fast oligocellulose molar mass distribution determination.

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Polysaccharide Biocatalysis: From Synthesizing Carbohydrate Standards to Establishing Characterization Methods

Cited by 7 publications

References 130 publications

Enzymatic Synthesis of Biobased Polyesters and Polyamides

Enzymatic Synthesis of Biobased Polyesters and Polyamides

Bio‐based polyurethane films using white dextrins

Characterization of Oligocellulose Synthesized by Reverse Phosphorolysis Using Different Cellodextrin Phosphorylases

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