Kinetics and physico-chemical characterization of exopolysaccharides produced by the cyanobacterium Oscillatoria formosa

Jindal, Namita; Singh, Devinder; Khattar, J. I. S.

doi:10.1007/s11274-011-0678-6

Cited by 40 publications

(23 citation statements)

References 32 publications

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“…, Anabaena Singh and Das, 2011), Nostoc (Otero and Vincenzini, 2003;Otero and Vincenzini, 2004;Singh and Das, 2011) and Oscillatoria (Jindal, 2011).…”

Section: Discussionmentioning

confidence: 99%

COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

et al. 2016

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Nitrogen concentration is an essential parameter in cyanobacterial cultures to produce enriched biomass with biotechnological purposes. Growth and biochemical composition of Nostoc LAUN0015, Nostoc UAM206, Anabaena sp.1 and Anabaena sp.2 were compared at 0, 4.25, 8.5 and 17 mM NaNO 3 . Cultures under laboratory conditions were maintained for 30 days at a volume of 500 mL. Anabaena sp.1 yielded the highest value of dry mass of 0.26 ± 2.49 mg mL -1 at 8.5 mM NaNO 3 . For chlorophyll, phycocyanin and phycoerythrin, maximum values were achieved at 17 mM NaNO 3 with 18.09 ± 1.74, 102.90 ± 6.73 and 53.47 ± 2.40 μg mL -1 , respectively. Nostoc LAUN0015 produced its maximum value of protein 644.86 ± 19.77 μg mL -1 , and 890 mg mL -1 of carbohydrates in the absence of nitrogen. This comparative study shows that the most efficient strain for the production of protein, carbohydrates and lipids in diazotrophic conditions corresponded to Nostoc LAUN0015. However, Anabaena sp.1 and Anabaena sp.2 required high nitrogen concentrations to achieve higher values of metabolites, comparing with Nostoc strains. Nitrogen dependence for the production of pigments and high protein production in strains of Anabaena and in diazotrophic conditions for Nostoc was demonstrated. Nostoc can be cultured under nitrogen deficiency and Anabaena in sufficiency, for biomass production enriched with proteins and carbohydrates.

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“…, Anabaena Singh and Das, 2011), Nostoc (Otero and Vincenzini, 2003;Otero and Vincenzini, 2004;Singh and Das, 2011) and Oscillatoria (Jindal, 2011).…”

Section: Discussionmentioning

confidence: 99%

COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

et al. 2016

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“…Khattar et al [11] observed that viscosity of EPS of the cyanobacterium Limnothrix redekii was sensitive to temperature. On the other hand, in another study it was observed that viscosity of EPS of Oscillatoria formosa was insensitive to temperature [32]. Most foods are subjected to variations in temperature during production.…”

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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“…Ca6, Lactobacillus kefiranofaciens, Lactobacillus plantarum and Lactobacillus rhamnosus, can produce EPS [4,5,6,8,9]. The EPS produced by lactobacilli was an important functional compound for their survivals in hypertonic environment [29]. Reported lactobacilli with producing EPS were approximately 30 species [6].…”

Section: Discussionmentioning

confidence: 99%

Study on Effect Elements of Exopolysaccharide Production of <i>Lactobacillus Kimchi</i> SR8 and DPPH Radical Scavenging Activity

Hu¹,

Fan²

2017

JFNR

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The correlation between exopolysaccharide production of Lactobacillus kimchi SR8 under different culture conditions and the DPPH radical scavenging activity of exopolysaccharide was studied. Lactobacillus kimchi SR8 produced 228.24 ± 2.23 mg/L exopolysaccharides with sucrose as the carbon source, Beef Extract-Peptone (2:1) as the nitrogen source and an initial pH of 6.50, whilst the DPPH radical scavenging activity of exopolysaccharides was only 6.85% ± 0.77% at a concentration of 0.20 mg/mL. However, the strain produced 206.79 ± 2.23 mg/L exopolysaccharides with glucose as the carbon source, Peptone-Tryptone (1:1) as the nitrogen source and an initial pH of 7.00, and the DPPH radical scavenging activity of exopolysaccharides increased to 28.34% ± 0.32% at the same concentration. The results showed no correlation between the exopolysaccharide production of lactic acid bacteria and the DPPH radical scavenging activity of exopolysaccharide. Therefore, the antioxidant activity should be taken into consideration when measures are taken to increase exopolysaccharide production if greater antioxidant activity of exopolysaccharides is preferred.

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Kinetics and physico-chemical characterization of exopolysaccharides produced by the cyanobacterium Oscillatoria formosa

Cited by 40 publications

References 32 publications

COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

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

Study on Effect Elements of Exopolysaccharide Production of <i>Lactobacillus Kimchi</i> SR8 and DPPH Radical Scavenging Activity

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