Microwave irradiation-assisted isomerization of glucose to fructose by immobilized glucose isomerase

Yu, Dahai; Wu, Hao; Zhang, Aijun; Tian, Li; Liu, Ludong; Wang, Chuanming; Fang, Xuexun

doi:10.1016/j.procbio.2010.09.026

Cited by 28 publications

(16 citation statements)

References 24 publications

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“…In enzyme or non-enzyme catalyzed reaction, cis-enediol was believed as the intermediate in isomerization of glucose into fructose, and which formation is the rate-limiting step. [26,42] In this work, the catalyst contains several functional groups which may play different role in catalysis reaction. The values of pKa of these functional groups were determined by titration analysis.…”

Section: Possible Catalytic Mechanismmentioning

confidence: 99%

“…The enzymatic isomerization of glucose into fructose has attracted much attention because of the highly selectivity and yield of fructose. [26] An sweetener high-fructose corn syrup is produced via bioconversion approach using immobilized glucose isomerase at 58 to 60°C, the process gives 43 % yield of fructose. [27] Phosphoglucose isomerase (PGI; EC 5.3.1.9), one glucose isomerase, catalyzes the interconversion of glucose 6phosphate (G6P) and fructose 6-phosphate (F6P).…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective Isomerization of Glucose into Fructose Catalyzed by a Mimic Glucose Isomerase

Zhang

Meng

et al. 2019

ChemCatChem

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An amphoteric phenolic compound with carboxyl and amino functional groups was synthesized and used as mimic glucose isomerase to catalyze the isomerization of glucose into fructose. The mimic enzyme displayed excellent catalytic activity for isomerization of glucose to fructose under mild conditions. The yield of fructose and selectivity of fructose could reach 33.0 % and 93.5 % after reacting 4 h, respectively, at pH 8.5 and 80°C. The catalysis reaction rate constant k cat and Michaelis constants K mG , K mF were calculated. The activation energy of glucose to fructose was evaluated as 65.9 kJ mol À 1 . The possible catalysis reaction mechanism was proposed. The acid-base groups on the catalyst play an important role in proton extraction and transfer, as well as in the rotation of local carbon chain, which leads to the highly selective isomerization of glucose into fructose under mild conditions.

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Section: Possible Catalytic Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Selective Isomerization of Glucose into Fructose Catalyzed by a Mimic Glucose Isomerase

Zhang

Meng

et al. 2019

ChemCatChem

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“…83,84 Therefore, significant efforts are devoted to designing selective inorganic chemical catalysts that can operate under a wider range of reaction conditions and at higher temperature in order to improve the reaction kinetics. The base-catalyzed isomerization of glucose to fructose follows the Lobry de Bruyn-Alberda van Ekenstein (LdB-AvE) mechanism, named after the two scientists who discovered in 1895 that glucose is transformed into fructose in the presence of a base.…”

Section: Conversion Of Cellulose and Hemicelullose Derivatives Into Pmentioning

confidence: 99%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

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Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

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“…Biological enzymes have been commercially used for glucose isomerization and their catalytic kinetics have been extensively investigated . Although biological enzymes are active catalysts, in particular under mild conditions, with excellent fructose selectivity, they suffer from cost‐ineffectiveness, strict pH condition and difficulty in recovery and separation from the products . Many homogeneous catalysts such as NaOH and [Al(OH) 4 ] − are also effective, but the troubles in recovering the catalyst and the concomitant environmental pollution impede their commercial application .…”

Section: Introductionmentioning

confidence: 97%

Isomerization Kinetics of Glucose to Fructose in Aqueous Solution with Magnesium‐Aluminum Hydrotalcites

Wang

Zhang

et al. 2020

ChemistrySelect

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Mg−Al hydrotalcites for catalyzing glucose isomerization to fructose are prepared. Effects of atom ratios of Mg/Al ranging from 1 to 4 and calcination temperatures from 250–650 °C on catalytic performance were examined systematically. It was found that the hydrotalcite (Mg2Al1LDH) calcined at 450 °C with an atom ratio of Mg/Al=2 is an excellent catalyst for glucose isomerization. Characterizations by SEM, EDS, TEM, XRD, FTIR, TG and BET demonstrated that the formed oxide condensed phase as well as the interaction with the alumina helps promote glucose isomerization reaction due to their appropriate basic sites at high calcination temperature. With Mg2Al1‐450 as the catalyst, kinetic model analysis confirmed that the reaction of glucose isomerization to fructose was an exothermal reversible reaction; both the forward and reverse reactions are quasi‐first‐order reactions with activation energies of 71.82 kJ/mol and 48.15 kJ/mol, respectively, while the side reaction is a zero‐order reaction with an activation energy of 94.22 kJ/mol. Therefore, high isomerization reaction temperature is not beneficial to enhance the yield and selectivity of fructose.

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Microwave irradiation-assisted isomerization of glucose to fructose by immobilized glucose isomerase

Cited by 28 publications

References 24 publications

Highly Selective Isomerization of Glucose into Fructose Catalyzed by a Mimic Glucose Isomerase

Highly Selective Isomerization of Glucose into Fructose Catalyzed by a Mimic Glucose Isomerase

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Isomerization Kinetics of Glucose to Fructose in Aqueous Solution with Magnesium‐Aluminum Hydrotalcites

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