Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya

Chen, Li; Tianli, LI; Guan, L.; Zhou, Yongqiang; Li, Pengfu

doi:10.3354/ab00309

Cited by 17 publications

(7 citation statements)

References 23 publications

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“…As well, it encodes 87 genes involved in capsule and extracellular polysaccharide (EPS) synthesis, suggesting their possible importance in mat formation and interactions with other organisms. EPS may have interesting biotechnological properties ( 10 , 11 ) and play diverse roles in nature in promoting adherence ( 12 ), formation of microbial mats ( 13 – 15 ), and allowing for long-term survival under adverse conditions ( 16 ). The genome also encodes proteins related to the capacity for fermentative metabolism, including several hydrogenases.…”

Section: Genome Announcementmentioning

confidence: 99%

Draft Genome Sequence of a Thermophilic Cyanobacterium from the Family Oscillatoriales (Strain MTP1) from the Chalk River, Colorado

et al. 2016

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Section: Genome Announcementmentioning

confidence: 99%

Draft Genome Sequence of a Thermophilic Cyanobacterium from the Family Oscillatoriales (Strain MTP1) from the Chalk River, Colorado

et al. 2016

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“…Chen et al . also demonstrated that flocculating activities of polysaccharides released by Microcoleus and Lyngbya increased with increasing metal ion concentration as well as pH.…”

Section: Discussionmentioning

confidence: 83%

“…Higiro et al [35] also observed that viscosity of xanthan (an anionic polysaccharide) increased in the presence of cations. Chen et al [36] also demonstrated that flocculating activities of polysaccharides released by Microcoleus and Lyngbya increased with increasing metal ion concentration as well as pH.…”

Section: Discussionmentioning

confidence: 96%

Optimization, characterization, and flow properties of exopolysaccharides produced by the cyanobacteriumLyngbya stagnina

Jindal

Singh

Khattar

2013

J. Basic Microbiol.

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The exopolysaccharides produced by the cyanobacterium Lyngbya stagnina have been characterized. Maximum amounts of EPS (142.4 µg EPS ml(-1) culture) were obtained during the stationary phase of growth and rate of EPS production was maximum during late phase of growth. When medium was supplemented with 85 mM NaCl, the organism produced three times more EPS compared to EPS produced by control cultures. TLC and HPLC analysis of the EPS hydrolysate revealed heteropolysaccharide nature with presence of four neutral sugars and galacturonic acid. Presence of high amounts of galacturonic acid in EPS indicated its polyanionic character. Aqueous dispersions of EPS showed non-Newtonian, pseudoplastic behavior and its viscosity was found to be quite stable with time. The viscosity data of aqueous dispersions of EPS at different temperatures (20-50 °C) were fitted into rheological models. The viscosity of EPS varied with pH, being highest at pH 10 and lowest at pH 6. Both divalent and monovalent cations caused increase in viscosity of EPS solution. The results suggest that EPS of this organism may find application in food industry.

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“…Algal flocculating activity of EPS was determined according to the method of Chen et al . () with slight modifications. The algal suspension with EPS 30% (v/v) was vortexed for 30 min and allowed to settle at 37°C for 5 min.…”

Section: Methodsmentioning

confidence: 99%

Sludge settling and algal flocculating activity of extracellular polymeric substance (EPS) derived from bacillus cereus SK

Siddhardha

Sukumar

Rajkumari

et al. 2016

Water & Environment J

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Exopolysaccharides (EPS) of microbial origin is a promising alternative to chemical flocculants due to their sustainability and eco-friendly nature. In the present study, EPS produced by Bacillus cereus SK was studied and their flocculating activity was investigated. On incubation for 48 h, B. cereus SK produced 0.919 6 0.022 g/L of EPS from a cell mass of 3.59 6 0.06 g/L. The isolated EPS was identified as glycoprotein and chemical characterization by FTIR spectroscopic analysis suggested the presence of hydroxyl, amino and carboxyl groups. The kaolin clay flocculating activity of 83.4% was obtained on treatment with 12 mg/L of EPS. At 30% (v/v) of EPS 31.22 6 4.71 mL/g of Sludge volume index (SVI) and 34.44 6 1.51 mL/g of algal flocculation was observed. The EPS produced by B. cereus SK was non-toxic and did not exert any adverse effect on Danio rerio even at a concentration of 800 mg/mL.

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Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya

Cited by 17 publications

References 23 publications

Draft Genome Sequence of a Thermophilic Cyanobacterium from the Family Oscillatoriales (Strain MTP1) from the Chalk River, Colorado

Draft Genome Sequence of a Thermophilic Cyanobacterium from the Family Oscillatoriales (Strain MTP1) from the Chalk River, Colorado

Optimization, characterization, and flow properties of exopolysaccharides produced by the cyanobacteriumLyngbya stagnina

Sludge settling and algal flocculating activity of extracellular polymeric substance (EPS) derived from bacillus cereus SK

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