Levan
Levan structure
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Common Name | Levan | ||
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| CAS Number | 9013-95-0 | Molecular Weight | 504.437 | |
| Density | 1.8±0.1 g/cm3 | Boiling Point | 910.4±65.0 °C at 760 mmHg | |
| Molecular Formula | C18H32O16 | Melting Point | N/A | |
| MSDS | Chinese USA | Flash Point | 504.4±34.3 °C | |
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Genomic and physiological variability within Group II (non-proteolytic) Clostridium botulinum.
BMC Genomics 14 , 333, (2013) Clostridium botulinum is a group of four physiologically and phylogenetically distinct bacteria that produce botulinum neurotoxin. While studies have characterised variability between strains of Group I (proteolytic) C. botulinum, the genetic and physiologica... |
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Effect of levan supplement in orange juice on weight, gastrointestinal symptoms and metabolic profile of healthy subjects: results of an 8-week clinical trial.
Nutrients 4(7) , 638-47, (2012) Levan is a commonly used dietary fiber of the fructans group. Its impact on health remains undetermined. This double blind controlled study aimed to investigate the effect of 8 weeks' daily consumption of 500 mL of natural orange juice enriched with 11.25 g o... |
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Partial purification of a Bacillus licheniformis levansucrase producing levan with antitumor activity
Int. J. Biol. Macromol. 51(3) , 329-35, (2012) The extracellular fructosyltransferase (FTase) of a novel strain of Bacillus licheniformis capable of producing fructooligosaccharides (FOS) and a polysaccharide type levan was obtained and partially purified. The purification was achieved by ammonium sulfate... |
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Hypolipidemic effect of diet supplementation with bacterial levan in cholesterol-fed rats.
Int. J. Biol. Macromol. 50(4) , 1070-4, (2012) Levan polysaccharide, a type of fructan, has been shown to have industrial applications as a new industrial gum in the fields of cosmetics, foods like dietary fiber and pharmaceutical goods. The objective of this current study was to investigate the possible ... |
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Complete genome sequence of the ethanol-producing Zymomonas mobilis subsp. mobilis centrotype ATCC 29191.
J. Bacteriol. 194(21) , 5966-7, (2012) Zymomonas mobilis is an ethanologenic bacterium that has been studied for use in biofuel production. Of the sequenced Zymomonas strains, ATCC 29191 has been described as the phenotypic centrotype of Zymomonas mobilis subsp. mobilis, the taxon that harbors the... |
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Microbial production of levansucrase for synthesis of fructooligosaccharides and levan.
Int. J. Biol. Macromol. 50(2) , 451-8, (2012) A newly isolated thermophilic bacterial strain from Tunisian thermal source was identified as Bacillus sp. and was selected for its ability to produce extracellular levansucrase. Following the optimization of carbon source, nitrogen source, temperature and in... |
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Sequential production of two biopolymers-levan and poly-ε-lysine by microbial fermentation.
Bioresour. Technol. 102(4) , 3966-9, (2011) Sequential fermentation for the production of two invaluable biopolymers, levan and poly-ε-lysine (ε-PL), has been successfully developed. It involves fermentation of Bacillus subtilis (natto) Takahashi in sucrose medium to produce levan, separation of levan ... |
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Reuteran and levan as carbohydrate sinks in transgenic sugarcane.
Planta 236(6) , 1803-15, (2012) The present study reports the effect of high molecular weight bacterial fructan (levan) and glucan (reuteran) on growth and carbohydrate partitioning in transgenic sugarcane plants. These biopolymers are products of bacterial glycosyltransferases, enzymes tha... |
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High levan accumulation in transgenic tobacco plants expressing theGluconacetobacter diazotrophicuslevansucrase gene
J. Biotechnol. 154(1) , 93-8, (2011) Bacterial levansucrase (EC 2.4.1.10) converts sucrose into non-linear levan consisting of long β(2,6)-linked fructosyl chains with β(2,1) branches. Bacterial levan has wide food and non-food applications, but its production in industrial reactors is costly an... |
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High expression level of levansucrase from Bacillus licheniformis RN-01 and synthesis of levan nanoparticles.
Int. J. Biol. Macromol. 54 , 30-6, (2013) LsRN from Bacillus licheniformis was cloned and expressed in Escherichia coli. From a 1793 bp genomic sequence, the lsRN gene was found to be composed of a single 1446 bp ORF with a putative promoter consensus boxes and a ribosome-binding site. This ORF was p... |