Immobilisation of acid pectinase on graphene oxide nanosheets
-
Yang Liu
,
Qiang Li
Abstract
Recent progress in nanotechnology has prompted research interest in immobilised enzymes on graphene oxide (GO) nanosheets for their large specific surface area and abundant functional groups. In the present work, acid pectinase was immobilised on the GO via the cross-linking of amino groups on pectinase and functional groups (e.g. carboxyl group) on the GO surface. Acid pectinase was effectively immobilised on the support and high loading densities were obtained (2400 mg per g of support). In addition, the immobilised enzyme achieved a better catalytic efficiency (K cat/K m) than its free counterpart; 3.7 mg−1 min−1 mL for immobilised pectinase, 3.5 mg−1 min−1 mL for free pectinase. Under acidic conditions, pectinase immobilised on GO will be agglomerated, but the addition of surfactant PEG 6000 could solve the problem and afford higher catalytic activity and catalytic efficiency.
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© 2013 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Rapid determination of fosetyl-aluminium in commercial pesticide formulations by high-performance liquid chromatography
- Immobilisation of acid pectinase on graphene oxide nanosheets
- Bench-scale biosynthesis of isonicotinic acid from 4-cyanopyridine by Pseudomonas putida
- Enzymatic synthesis of a chiral chalcogran intermediate
- Separation of Cd(II) and Ni(II) ions by supported liquid membrane using D2EHPA/M2EHPA as mobile carrier
- Fouling of nanofiltration membranes used for separation of fermented glycerol solutions
- Oxyhumolite influence on adsorption and desorption of phosphate on blast furnace slag in the process of two-stage selective adsorption of Cu(II) and phosphate
- Cellulose-precipitated calcium carbonate composites and their effect on paper properties
- Landfill leachate treatment using the sequencing batch biofilm reactor method integrated with the electro-Fenton process
- Effect of sintering temperature on the magnetic properties and charge density distribution of nano-NiO
- Synthesis, optimization, characterization, and potential agricultural application of polymer hydrogel composites based on cotton microfiber
- Cu(II) removal enhancement from aqueous solutions using ion-imprinted membrane technique
- Synthesis of new eburnamine-type alkaloid via direct hydroalkoxylation
- Selection of surfactants as main components of ecological wetting agent for effective extinguishing of forest and peat-bog fires
- Ultrasonic and Lewis acid ionic liquid catalytic system for Kabachnik-Fields reaction
- A simple method for creating molecularly imprinted polymer-coated bacterial cellulose nanofibers
- Determination of pK a of N-alkyl-N,N-dimethylamine-N-oxides using 1H NMR and 13C NMR spectroscopy
Articles in the same Issue
- Rapid determination of fosetyl-aluminium in commercial pesticide formulations by high-performance liquid chromatography
- Immobilisation of acid pectinase on graphene oxide nanosheets
- Bench-scale biosynthesis of isonicotinic acid from 4-cyanopyridine by Pseudomonas putida
- Enzymatic synthesis of a chiral chalcogran intermediate
- Separation of Cd(II) and Ni(II) ions by supported liquid membrane using D2EHPA/M2EHPA as mobile carrier
- Fouling of nanofiltration membranes used for separation of fermented glycerol solutions
- Oxyhumolite influence on adsorption and desorption of phosphate on blast furnace slag in the process of two-stage selective adsorption of Cu(II) and phosphate
- Cellulose-precipitated calcium carbonate composites and their effect on paper properties
- Landfill leachate treatment using the sequencing batch biofilm reactor method integrated with the electro-Fenton process
- Effect of sintering temperature on the magnetic properties and charge density distribution of nano-NiO
- Synthesis, optimization, characterization, and potential agricultural application of polymer hydrogel composites based on cotton microfiber
- Cu(II) removal enhancement from aqueous solutions using ion-imprinted membrane technique
- Synthesis of new eburnamine-type alkaloid via direct hydroalkoxylation
- Selection of surfactants as main components of ecological wetting agent for effective extinguishing of forest and peat-bog fires
- Ultrasonic and Lewis acid ionic liquid catalytic system for Kabachnik-Fields reaction
- A simple method for creating molecularly imprinted polymer-coated bacterial cellulose nanofibers
- Determination of pK a of N-alkyl-N,N-dimethylamine-N-oxides using 1H NMR and 13C NMR spectroscopy
