Production and characterization of microbial levan

Han, Y. W.; Clarke, M. A.

doi:10.1021/jf00092a011

Cited by 116 publications

(84 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Vinhas (1999), during the biopolymer production by Z. mobilis it was not advantageous to promote the agitation, since it led to aeration which consequently damaged the cell and levan production. However, in the present study, agitation did not cause a decrease in levan production, which was also found by Han and Clarke (1990), which reported that the polysaccharide production increased when the culture was slightly agitated during fermentation.…”

Section: Effect Of High Concentrations Of Sucrosesupporting

confidence: 86%

Nutritional requirements of Zymomonas mobilis CCT 4494 for levan production

Ernandes

García-Cruz

2011

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

Section: Effect Of High Concentrations Of Sucrosesupporting

confidence: 86%

Nutritional requirements of Zymomonas mobilis CCT 4494 for levan production

Ernandes

García-Cruz

2011

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

“…As shown in Table 2, the primary carbons (C-1 and C-6) of BD1707 levan were not grouped so closely as that of inulin and the three ring carbons (C-3, C-4, and C-5) were more closely grouped in the case of inulin, a characteristic discrepancy in the 13 C-NMR spectra between inulin and levan (35).…”

mentioning

confidence: 94%

Levan-Producing Leuconostoc citreum Strain BD1707 and Its Growth in Tomato Juice Supplemented with Sucrose

Han

Gao

et al. 2016

Appl Environ Microbiol

View full text Add to dashboard Cite

A levan-producing strain, BD1707, was isolated from Tibetan kefir and identified as Leuconostoc citreum. The effects of carbon sources on the growth of L. citreum BD1707 and levan production in tomato juice were measured. The changes in pH, viable cell count, sugar content, and levan yield in the cultured tomato juice supplemented with 15% (wt/vol) sucrose were also assayed. L. citreum BD1707 could synthesize more than 28 g/liter of levan in the tomato juice-sucrose medium when cultured at 30°C for 96 h. Based on the monosaccharide composition, molecular mass distribution, Fourier transform infrared (FTIR) spectra, and nuclear magnetic resonance (NMR) spectra, the levan synthesized by L. citreum BD1707 was composed of a linear backbone consisting of consecutive ␤-(2¡6) linked D-fructofuranosyl units, with an estimated average molecular mass of 4.3 ؋ 10 6 Da.

show abstract

“…Han [18] Aerobacter aerogenes Srinivasan and Quastel [19] Aerobacter levanicum 0.051 Evans and Hibbert [20] Arthrobacter ureafaciens Han [18] Azotobacter chroococum Hestrin and Goldblum [21] Bacillus asterosporus Hestrin and Goldblum [21] Bacillus amyloliquefaciens Han [18] Bacillus megaterium Evans and Hibbert [20] Bacillus mesentericus Han [18] Bacillus polymyxa 0.45 Han [22] Bacillus subtilis 0.285* Shih [23] Corynebacterium levaniformans Han [18] Corynebacterium beticola Han [18] Gluconobacter oxydans Han [18] Leuconostoc mesenteroides Han [18] Micbacterium laevaniformans Han [18] Odontomyces viscosus Han [18] Phytomonas pruni Han [18] Pseudonomas aureofaciens 83% Fuchs [24] Pseudonomas chlororaphis Fuchs [24] Pseudonomas fluorescens Fuchs [24] Rothis dentocariosa Han [18] Streptococcus sp. Han [18] Streptocuccus salivarius Fuchs [24] Xanthomonas sp. Han [18] Zymomonas mobilis 0.0063 Dawes, Ribbons and Rees [25] Yeast Leowenberg and Reese [16] Aspergillus sydawi Leowenberg and Reese [16] Aspergillus versicolor Leowenberg and Reese [16] *Note that Bacillus licheniformis is a type of Bacillus subtilis **This yield is for cell-free production of levan…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…Han [18] Streptocuccus salivarius Fuchs [24] Xanthomonas sp. Han [18] Zymomonas mobilis 0.0063 Dawes, Ribbons and Rees [25] Yeast Leowenberg and Reese [16] Aspergillus sydawi Leowenberg and Reese [16] Aspergillus versicolor Leowenberg and Reese [16] *Note that Bacillus licheniformis is a type of Bacillus subtilis **This yield is for cell-free production of levan…”

Section: Experimental Apparatusmentioning

confidence: 99%

Production of Levan by Bacillus licheniformis for Use as a Soil Sealant in Earthen Manure Storage Structures

Ghaly¹,

Arab²,

Mahmoud³

et al. 2007

American J. of Biochemistry and Biotechnology

View full text Add to dashboard Cite

Manure application is not permitted on frozen land in Canada and therefore, manure management and storage are the primary issues facing the agri-food industry. Low-cost, effective and environmentally safe earthen manure storage (EMS) facilities will lower costs and help make the livestock industry more competitive and efficient. The goal of this study was to develop a biological sealing technology for earthen manure storages. The results showed that it is feasible to use a growing culture of Bacillus licheniformis to produce a non viscous water insoluble levan. Levan can only be produced by Bacillus licheniformis during the growth mode. No levan was produced during the death phase. About 0. 36 g of levan was produced per gram of sucrose which is 91. 1% of theoretical yield. The polymer can be used as a plugging agent to plug the pores of high permeability soils. From the biological and biochemical characteristics of the Bacillus licheniformis, it appears that the organism is capable of producing levan from sucrose under most field and soil conditions. As a soil organism, Bacillus licheniformis should be able to compete with most common soil species such as Arthrobacter and Bacillus. The bacteria could be grown either in the non-polysaccharide producing mode or in the polysaccharide producing mode. The first would permit distribution of the bacteria to the lower soil layers but would delay the production of the polysaccharide due to the lag period required to produce the enzyme (levansucrase). Upon production of levan, pore spaces would close and hence, the hydraulic conductivity would be substantially reduced.

show abstract

Production and characterization of microbial levan

Cited by 116 publications

References 8 publications

Nutritional requirements of Zymomonas mobilis CCT 4494 for levan production

Nutritional requirements of Zymomonas mobilis CCT 4494 for levan production

Levan-Producing Leuconostoc citreum Strain BD1707 and Its Growth in Tomato Juice Supplemented with Sucrose

Production of Levan by Bacillus licheniformis for Use as a Soil Sealant in Earthen Manure Storage Structures

Contact Info

Product

Resources

About