Extracellular polysaccharide synthesis by Nostoc strains as affected by N source and light intensity

Otero, Ana; Vincenzini, Massimo

doi:10.1016/s0168-1656(03)00022-1

Cited by 174 publications

(119 citation statements)

References 26 publications

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“…It is known that higher temperature and light intensities favor the increase of EPS production (Di ). This has been previously reported on EPS production by diatoms (Staats et al 2000;Wolfstein and Stal 2002) and cyanobacteria (Vincenzini et al 1990;Moreno et al 1998;Otero and Vincenzini 2003) demonstrating a clear and direct relationship between the production of EPS and oxygenic photosynthesis; it would therefore be quite reasonable to expect increasing EPS production with an increase in temperature and light. It is possible that the biofilm thickness and its multi-stratified structure caused strong attenuation of light in the upper biofilm layers.…”

Section: Discussionsupporting

confidence: 66%

Characterization of exopolysaccharides produced by seven biofilm-forming cyanobacterial strains for biotechnological applications

et al. 2013

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The molecular identification of seven biofilmforming cyanobacteria and the characterization of their exopolysaccharides were made and considered in terms of potential biotechnological applications. The studied strains were isolated from phototrophic biofilms taken from various Italian sites including a wastewater treatment plant, an eroded soil, and a brackish lagoon. The polysaccharides were characterized by use of ion exchange chromatography, circular dichroism, and cytochemical stains. All strains produced exopolysaccharides with differing ratios of hydrophobic and hydrophilic moieties depending on the species, the polysaccharide fraction (i.e., whether capsular or released), and the ambient conditions. It was shown that the anionic nature of the exopolysaccharides was due to the presence of carboxylic and sulfated groups and is likely the main characteristic with industrial applicability. Potential biotechnological applications are discussed.

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Section: Discussionsupporting

confidence: 66%

Characterization of exopolysaccharides produced by seven biofilm-forming cyanobacterial strains for biotechnological applications

et al. 2013

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“…Alguns EPS de cianobactérias têm aplicações biomédicas potenciais, como drogas anti-virais e antitumorais (HAYASHI et al, 1996;HIRAHASHI et al, 2002). O uso de EPS de cianobactérias é importante porque esses microrganismos apresentam maiores taxas de crescimento e são mais fáceis de manipular do que macroalgas e plantas superiores e por seus EPS possuírem propriedades físicas e químicas únicas (MORENO et al, 1998;OTERO;VICENZINI, 2003).…”

Section: Introductionunclassified

Produção de exopolissacarídeos pela cianobactéria Nostoc sp em diferentes concentrações de nitrogênio e glicose

Kawai¹,

Pinotti²,

Celligoi³

2006

Semin. Cienc. Biol. Saude

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ResumoCianobactérias são microrganismos procariontes que, durante o crescimento celular, são capazes de produzir exopolissacarídeos (EPS). Devido à diversidade bioquímica destes, podem ser excelentes para vários fins biotecnológicos, tendo aplicações em indústrias alimentícias, têxteis, de tintas, cosméticos, de papel, e farmacêuticas, como floculantes, espessantes ou estabilizadores, substituindo os polissacarídeos de macroalgas e plantas. Além disso, as cianobactérias apresentam taxas maiores de crescimento e são mais fáceis de manipular do que plantas e macroalgas. Este estudo teve por objetivo otimizar a produção de EPS no meio BG11, com relação a diferentes concentrações de nitrogênio e glicose do meio de cultivo na produção de EPS e biomassa pela cianobactéria Nostoc sp. Palavras-chave: Exopolissacarídeo. Cianobactéria. Nostoc sp. AbstractCyanobacteria are prokaryotic microorganisms that can produce exopolysaccharide (EPS) during their cellular growth and due to their biochemical diversity, they can be considered as excellent in various biotechnological applications, being used in food, textile, ink, cosmetics, paper and pharmaceutical industries as gelling, flocculants or emulsifier agents, substituting the polysaccharides of macroalgae and plants. Besides, microorganisms present higher growth rates and they are easier to manipulate than plants and macroalgae. The objective of the present study is to optimize the EPS production in BG11 medium related to the different nitrogen and glucose concentrations in the culture for the EPS and biomass production by the cyanobacteria Nostoc sp.

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“…Enriched with biocompatibility, being GRAS and non-toxic ability of lactic acid bacteria-derived exopolysaccharides have made them a first-line choice in the treatment of various chronic diseases including tissue engineering, drug delivery system, and disease healing ability as compared to the plants and algal-based polysaccharides (Otero and Vincenzini, 2003). Reports have confirmed that a few selected biopolymers can be degraded in vivo, they might be possible alternatives to synthetic biopolymers for using in tissue replacement and controlled drug release strategies (Rehm, 2010).…”

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confidence: 99%

Exopolysaccharide and lactic acid bacteria: Perception, functionality and prospects

Bajpai

Rather

Majumder

et al. 2015

Bangladesh J Pharmacol

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<p class="Abstract">Lactic acid bacteria exhibit the most effective potential to divert significant amount of fermentable sugars towards the biosynthesis of functional exopolysaccharide. Exopolysaccharides from lactic acid bacteria are receiving a renewed interest due to the claims of human health benefits. This review provides an update on multiple uses and production of exopolysaccharides with major emphasis on their chemical properties, characterization, and some other molecular strategies adopted for their genetics and biological tailoring to better understand the process of exopolysaccharide production along with their antiviral efficacy with multiple modes of action. Additionally, microbiological, biochemical, nutritional and biotechnological aspects of exopolysaccharide production have also been discussed. Moreover, appro-priate suggestions have been made on lactic acid bacteria improvements, leading to enhanced production with advanced modification and production process that may contribute to the economic soundness of applications in food and pharmacological industries with this promising group of biomolecules.</p><p> </p>

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Extracellular polysaccharide synthesis by Nostoc strains as affected by N source and light intensity

Cited by 174 publications

References 26 publications

Characterization of exopolysaccharides produced by seven biofilm-forming cyanobacterial strains for biotechnological applications

Characterization of exopolysaccharides produced by seven biofilm-forming cyanobacterial strains for biotechnological applications

Produção de exopolissacarídeos pela cianobactéria Nostoc sp em diferentes concentrações de nitrogênio e glicose

Exopolysaccharide and lactic acid bacteria: Perception, functionality and prospects

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