A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering

2015 ◽  
Vol 51 (28) ◽  
pp. 6210-6213 ◽  
Author(s):  
José G. L. Ferreira ◽  
Aline Grein-Iankovski ◽  
Marco A. S. Oliveira ◽  
Fernanda F. Simas-Tosin ◽  
Izabel C. Riegel-Vidotti ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Plasmid Dna ◽  
Gum Arabic ◽  
Natural Polymer ◽  
Materials Engineering ◽  
Artificial Nuclease ◽  
Sustainable Materials

Biocatalysts were obtained by anchoring imidazole groups on the biocompatible gum arabic, with catalytic activity in dephosphorylation reactions and cleavage of plasmid DNA.

scholarly journals Synthesis and Characterization of Polyvinyl Alcohol-Gum Arabic Polymer Blend Membranes

2019 ◽  
Vol 32 (1) ◽  
pp. 111-114
Author(s):  
Larny Mary J ayan ◽  
S. Karthikeyan ◽  
D. Joice Sheeba ◽  
G.R. Angel ◽  
E.V. Kripa ◽  
...  
Keyword(s):  
Polymer Blend ◽  
Gum Arabic ◽  
Poly Vinyl Alcohol ◽  
Natural Polymer ◽  
New Class ◽  
Xrd Diffraction ◽  
Solution Casting Method ◽  
Diffraction Patterns ◽  
Blend Polymer

Membranes of poly(vinyl alcohol) (PVA), gum arabic (GA) homopolymer and their blends of six different compositions (w/w) were prepared using solution casting method. Mixing of synthetic polymer e.g., PVA and natural polymer e.g., gum arabic can give a new class of polymer blend with better mechanical properties and biocompatibility than those of single components. The structural, optical and conductivity studies of these prepared membranes were examined by XRD, FTIR, UV and EIS. The XRD diffraction patterns for the polymer blend samples showed that they are more amorphous in nature as compared to pure PVA and pure gum arabic. The FTIR analysis of the samples gave information about various functional groups present in the samples. The energy band gap of various samples were obtained from UV-visible analysis. The conductivity of polymer membrane was analyzed by electronics impedance spectroscopy (EIS). Addition of natural polymer gum arabic has resulted slight increase in the conductivity of blend polymer.

scholarly journals SYNTHESIS AND STABILIZATION OF COPPER NANOPARTICLES IN GUM ARABIC CONDITIONS

InterConf ◽  
2021 ◽  
pp. 214-217
Author(s):  
Nizami Zeynalov ◽  
Ulviya Mammadova ◽  
Nargiz Rahimli ◽  
Konul Hasanova ◽  
Hecer Aslanova ◽  
...  
Keyword(s):  
Composite Material ◽  
Metal Nanoparticles ◽  
Copper Nanoparticles ◽  
Gum Arabic ◽  
Cross Linking ◽  
Natural Polymer ◽  
Copper Metal

Copper metal nanoparticles are immobilized in a natural polymer gum arabic. The resulting compound was constructed using cross-linking agent of glutar aldehyde. The composite material was studied by the FTIR method.

Cleavage of Supercoiled Plasmid DNA by Phenanthroline–Polyamine Conjugates as a Metal-free Artificial Nuclease

2013 ◽  
Vol 42 (1) ◽  
pp. 86-88 ◽  
Author(s):  
Tomokazu Masuda ◽  
Takeshi Sasagase ◽  
Akiko N. Ozaki ◽  
Masayasu Kuwahara ◽  
Hiroaki Ozaki ◽  
...  
Keyword(s):  
Plasmid Dna ◽  
Metal Free ◽  
Supercoiled Plasmid ◽  
Artificial Nuclease ◽  
Polyamine Conjugates

scholarly journals Immobilization of Dextranase Using Anionic Natural Polymer Alginate as a Matrix for the Degradation of a Long-Chain Biopolymer (Dextran)

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Faiza Shahid ◽  
Afsheen Aman ◽  
Shah Ali Ul Qader
Keyword(s):  
Catalytic Activity ◽  
Chloride Concentration ◽  
Curing Time ◽  
Natural Polymer ◽  
Constant Condition ◽  
Alginate Hydrogel ◽  
Original Activity ◽  
Alginate Concentration ◽  
Stability Examination ◽  
Long Chain

Alginate is an inexpensive, nontoxic, valuable biopolymer utilized in the study for the immobilization of commercially applicable biocatalyst dextranase. Dextranase was immobilized by an entrapment method, and alginate hydrogel spheres were synthesized after optimizing several parameters. A sodium alginate concentration of 4.0% was noticed to be suitable along with a calcium chloride concentration of 0.2 molar after providing a curing time of 20 minutes. After comparing the characteristics of the entrapped enzyme with those of the soluble one, it was observed that the characteristics were more or less the same except for the change in reaction time which was noticed to be prolonged in the case of entrapped dextranase while the change in temperature and pH optima was not observed. The variation in Vmax and Km values of dextranase after entrapment was also noted. However, after extensive stability examination studies, it was found that dextranase became more stable after entrapment; as a result, it retained more than 50% of its original activity at elevated temperature even after exposure for about 2.0 hours. The reusability of dextranase was up to 7.0 cycles after performing catalytic activity under constant condition.

The effect of the natural polymer gum Arabic on the synthesis of aqueous dispersible PEDOT composites

2015 ◽  
Vol 149 ◽  
pp. 116-119 ◽  
Author(s):  
Emili Lucht ◽  
Igor Rocha ◽  
Elisa S. Orth ◽  
Izabel C. Riegel-Vidotti ◽  
Marcio Vidotti
Keyword(s):  
Gum Arabic ◽  
Natural Polymer

Hydrolysis of plasmid DNA and RNA by amino alkyl naphthalimide as metal-free artificial nuclease

2006 ◽  
Vol 16 (4) ◽  
pp. 803-806 ◽  
Author(s):  
Qing Yang ◽  
Jianqiang Xu ◽  
Yuanshe Sun ◽  
Zhigang Li ◽  
Yonggang Li ◽  
...  
Keyword(s):  
Plasmid Dna ◽  
Metal Free ◽  
Dna And Rna ◽  
Artificial Nuclease ◽  
Hydrolysis Of

Applications of Natural Polymer Gum Arabic: A Review

2015 ◽  
Vol 18 (5) ◽  
pp. 986-998 ◽  
Author(s):  
Seema Patel ◽  
Arun Goyal
Keyword(s):  
Gum Arabic ◽  
Natural Polymer

scholarly journals Electrospun Nanomaterials: Biotechnology, Food, Water, Environment, and Energy

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
James J. Doyle ◽  
Santosh Choudhari ◽  
Seeram Ramakrishna ◽  
Ramesh P. Babu
Keyword(s):  
Water Environment ◽  
Synthetic Polymer ◽  
Clean Water ◽  
Natural Polymer ◽  
Science And Engineering ◽  
Polymer Systems ◽  
Materials Engineering ◽  
The Past ◽  
The World ◽  
Real World Applications

Over the past decade, electrospinning and electrospraying techniques have become affordable platform techniques for growing numbers of students, researchers, academics, and businesses around the world, producing organic and inorganic nanofibres and nanoparticles for a range of purposes. This review illustrates various advances in the science and engineering of electrospun nanomaterials and their applicability in meeting the growing needs within five crucial sectors: clean water, environment, energy, healthcare, and food. Although most of these sectors are principally dominated by synthetic polymer systems, the emergence of natural polymer and hybrid natural-synthetic electrospun polymer systems offers particular advantages. Current scientific and materials engineering advancements have resulted in highly competitive nanofibre, electrospun products, offering credible solutions to real-world applications.

The catalytic evaluation of in situ grown Pd nanoparticles on the surface of Fe3O4@dextran particles in the p-nitrophenol reduction reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 8289-8296 ◽  
Author(s):  
Luciano R. S. Lara ◽  
Alexandre D. Zottis ◽  
Welman C. Elias ◽  
Deonildo Faggion ◽  
Carlos Eduardo Maduro de Campos ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Sodium Borohydride ◽  
Pd Nanoparticles ◽  
Reduction Reaction ◽  
Natural Polymer ◽  
Activity Evaluation ◽  
Nitrophenol Reduction

We report the catalytic activity evaluation of in situ grown Pd nanoparticles on the surface of superparamagnetic Fe3O4 particles coated with the natural polymer dextran, in the reduction of p-nitrophenol (Nip), in water, by sodium borohydride.

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