Induced change in Arthrospira sp. (Spirulina) intracellular and extracellular metabolites using multifactor stress combination approach

Chentir, Imène; Doumandji, Amel; Ammar, Jihene; Zili, Fatma; Jridi, Mourad; Μάρκου, Γιώργος; Ouada, Hatem Ben

doi:10.1007/s10811-017-1348-3

Cited by 28 publications

(22 citation statements)

References 53 publications

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“…It is possible that the combined effects led to cells producing more EPS in response to the limited conditions. This result is in accordance with that found by Chentir et al (2018), who obtained the highest EPS yield, 0.902 g g −1 , using 0.5 g L −1 NaNO 3 combined with a PFD of 57.2 μE m −2 s −1 in A. platensis. Chentir et al (2017) evaluated the maximization of EPS production from A. platensis as a function of variations in NaCl concentration and PFD.…”

Section: Final Biomass Concentration and Eps Yield Under Different Grsupporting

confidence: 92%

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Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

Silva

Azero

Teixeira

et al. 2020

Bioresour. Bioprocess.

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Arthrospira platensis is a cyanobacterium that is of great biotechnological interest, particularly for the food industry, as it possesses a high content of proteins, pigments, lipids and carbohydrates. Cyanobacteria produce extracellular polymeric substances (EPS), which are co-products of secondary metabolism that present thickening or gelling properties. A 3-level factorial design was used to study the combined effect of different nitrate concentrations and photon flux density (PFD) values to evaluate the biomass and EPS production of A. platensis. The best result in terms of biomass production was obtained under condition 6 (2 g L −1 NaNO 3 and 600 μE m −2 s −1) yielding a concentration of 1.292 g L −1. However, condition 1 (0.25 g L −1 NaNO 3 and 200 μE m −2 s −1) produced the greatest EPS yield (111 mg g −1), followed by condition 9 (2 g L −1 NaNO 3 and 1000 μE m −2 s −1). FTIR analyses of EPS samples indicated the presence of carboxylate and sulfate functional groups, and rheological studies of the EPS at 5 and 10 g L −1 revealed a dilute solution behavior.

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Section: Final Biomass Concentration and Eps Yield Under Different Grsupporting

confidence: 92%

“…Growth curves of A. platensis at different conditions of NaNO 3 and PFD. (C. P. refers to central point) platensis are 57.2 μE m −2 s −1(Chentir et al 2018), and 700 μE m −2 s −1(Aikawa et al 2012), respectively.…”

mentioning

confidence: 99%

Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

Silva

Azero

Teixeira

et al. 2020

Bioresour. Bioprocess.

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show abstract

“…Possibly, the combined effects led cells to produce more EPS in response to limited conditions. This result is in accordance with that found by Chentir et al (2018), which obtained the highest EPS yield, 0.902 g.g -1 , using 0.5 g.L -1 NaNO 3 combined with PFD of 57.2 μE.m -2 .s -1 . Chentir et al (2017) evaluated the maximization of EPS production by Arthrospira platensis as a function of variations in NaCl concentration and PFD.…”

Section: Final Biomass Concentration and Eps Yield Under Different Grsupporting

confidence: 92%

Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

Silva

Azero

Teixeira

et al. 2020

Preprint

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Arthrospira platensis is a cyanobacterium that exhibits a large biotechnological interest for the food industry because of its high protein content, pigments, lipids and carbohydrates. The extracellular polymeric substances (EPS) are co-products of secondary metabolism that may present thickening or gelling property. A 3-level factorial design was used to study the combined effect of different nitrate concentrations and photon flux density (PFD) to evaluate the biomass and EPS production by Arthrospira platensis. The best result for biomass production was obtained under condition 6 (2 g.L-1 NaNO3 and 600 µE.m-2s-1) leading a biomass concentration of 1.292 mg.L-1. Condition 1 (0.25 g.L-1NaNO3 and 200 µE.m-2s-1) produced the major EPS yield (111 mg.g-1) followed by condition 9 (2 g.L-1NaNO3 and 1000 µE.m-2s-1). The present of carboxylate and sulfate functional groups was identified in EPS samples. Rheological studies performed for some EPS products at 5 and 10 g.L-1 concentrations revealed a dilute solution behavior.

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“…En effet, les microalgues requièrent peu d'eau, sont cultivables même sur les sols peu ou non fertiles et se caractérisent par une forte productivité et une bonne efficacité photosynthétique, offrant une récolte continue sur toute l'année. Ces avantages ont permis l'ouverture de nouveaux marchés propulsant, ainsi, les microalgues au rôle de candidates prometteuses pour la production de biomolécules d'intérêt, qui plus est, plus compétitives que celles extraites à partir de végétaux supérieurs [3,4]. Similairement aux plantes, les microalgues synthétisent une large gamme de molécules bioactives, tels que les caroténoïdes, les chlorophylles, les acides gras, etc.…”

Section: Introductionunclassified

“…au bout de 3 jours de culture, sous une lumière faible (10 µmol de photons m²/s) combinée à 0,33 M NaCl, 0,5 g/L de NaNO3 et 2,68 g/L de K2HPO4,[3]. Chez la cyanobactérie Limnothrix sp.…”

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One structure, multiple features: The phycocyanin in biotechnology

Chentir¹

2020

Nutr. Santé

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Phycocyanine (PC) is a water-soluble, non-toxic and bioactive (antioxidant, anti-inflammatory, antitumor, etc.) phycobiliprotein isolated, mainly, from cyanobacteria. Due to its several properties, PC is considered to be a rising biomolecule for Industrial exploitation, and has become an important research axis in order to promote its production, and optimize its biotechnological applications. The aim of this review article was to discuss the basic, and recent properties and applications of PC, and to bring together data on various aspects of PC stabilization, and PC nanopar-ticles formulation. In addition, an overview of the main structural characteristics and process-ses of PC extraction and purification were also discussed. The recent scientific research findings concluded that PC is a promising both functional, and bioactive additive in industry, especially, in food as a dye, in imaging as a fluorescent labeling agent, and in the phar-maceutical and nano-pharmaceutical field as a bioactive molecule and nanopar-ticles, particularly, due to it antitumor capacity. Phycocyanine is, thus, a promising bio-active molecules in pharmacological, and medical fields.

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Induced change in Arthrospira sp. (Spirulina) intracellular and extracellular metabolites using multifactor stress combination approach

Cited by 28 publications

References 53 publications

Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

Influence of culture conditions on the production of extracellular polymeric substances (EPS) by Arthrospira platensis

One structure, multiple features: The phycocyanin in biotechnology

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