pullulan
pullulan structure
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Common Name | pullulan | ||
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| CAS Number | 9057-02-7 | Molecular Weight | N/A | |
| Density | 1.5±0.1 g/cm3 | Boiling Point | 854.6±65.0 °C at 760 mmHg | |
| Molecular Formula | (C37H62O30)n | Melting Point | -80ºC | |
| MSDS | USA | Flash Point | 470.6±34.3 °C | |
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Interpolymer complexes and polymer compatibility.
Macromol. Rapid Commun. 33(22) , 1933-7, (2012) A reliable method to decide whether two polymers A and B are miscible or incompatible would be very helpful in many ways. In this contribution we demonstrate why traditional procedures cannot work. We propose to use the intrinsic viscosities [η] of the polyme... |
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Paclitaxel-incorporated nanoparticles of hydrophobized polysaccharide and their antitumor activity
Int. J. Pharm. 433(1-2) , 121-8, (2012) The aim of this study was to characterize paclitaxel-incorporated polysaccharide nanoparticles and evaluate their antitumor activity in vitro and in vivo. Pullulan was hydrophobically modified using acetic anhydride to make the paclitaxel-incorporated nanopar... |
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Molecular cloning and biochemical characterization of a heat-stable type I pullulanase from Thermotoga neapolitana
Enzyme Microb. Technol. 48(3) , 260-6, (2011) The gene encoding a type I pullulanase from the hyperthermophilic anaerobic bacterium Thermotoga neapolitana (pulA) was cloned in Escherichia coli and sequenced. The pulA gene from T. neapolitana showed 91.5% pairwise amino acid identity with pulA from Thermo... |
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Signal peptide-independent secretory expression and characterization of pullulanase from a newly isolated Klebsiella variicola SHN-1 in Escherichia coli.
Appl. Biochem. Biotechnol. 169(1) , 41-54, (2013) A strain with the power to produce extracellular pullulanase was obtained from the sample taken from a flour mill. By sequencing its 16S rDNA, the isolate was identified as Klebsiella variicola SHN-1. When the gene encoding pullulanase, containing the N-termi... |
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Influence of controlled pH on the activity of UDPG-pyrophosphorylase in Aureobasidium pullulans.
Carbohydr. Polym. 92(1) , 629-32, (2013) UDPG-pyrophosphorylase is the key enzyme involved in pullulan biosynthesis and pullulan production by Aureobasidium pullulans. In this study, effect of controlled pH on fermentation time, pullulan production, biomass, and UDPG-pyrophosphorylase activity was i... |
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The effects of sperminated pullulans on cornea permeability to puerarin and the toxicity.
J. Ocul. Pharmacol. Ther. 28(5) , 497-501, (2012) To investigate the varied effects of sperminated pullulans (SP) with different amino residues on cornea permeability and its local toxicity.Three groups of rabbits were used: control, low-amino residue content SP (SP-L), and high-amino residue content SP (SP-... |
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Development and optimization of formulation for treatment of copper deficiency in human organism.
Acta Pol. Pharm. 69(4) , 739-49, (2012) The aim of this study was to design and optimize a new tablet formulation for treatment of copper deficiency in human organism by using an experimental design. The new no-veneered tablets, prepared by a wet granulation technique, are containg active substance... |
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Pullulan degrading enzymes of bacterial origin.
Crit. Rev. Microbiol 30(2) , 107-21, (2004) Pullulan degrading enzymes belong to a group of glycosylhydrolases that are widely distributed in nature and are produced by an extremely wide variety of species. Among them the thermophilic and mesophilic bacteria are a rich source of these enzymes. There ar... |
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Sustained ocular delivery of ciprofloxacin using nanospheres and conventional contact lens materials.
Invest. Ophthalmol. Vis. Sci. 53(3) , 1341-52, (2012) To formulate conventional contact lenses that incorporate nanosphere-encapsulated antibiotic and demonstrate that the lenses provide for sustained antibacterial activity.A copolymer composed of pullulan and polycaprolactone (PCL) was used to synthesize core-s... |
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Current knowledge on biosynthesis, biological activity, and chemical modification of the exopolysaccharide, pullulan.
Carbohydr. Res. 339(3) , 447-60, (2004) The article presents an overview of the latest advances in investigations of the biosynthesis, molecular properties, and associated biological activity of pullulan. The literature survey on the pullulan biosynthesis is intended to illustrate how the great var... |