Evaluation of the co-production of total carotenoids, C-phycocyanin and polyhydroxyalkanoates by Arthrospira platensis

Santos, Raquel Rezende dos; Corrêa, Priscila S.; Dantas, Fábio Moyses Lins; Teixeira, Cláudia Maria Luz Lapa

doi:10.1016/j.biteb.2019.100226

Cited by 20 publications

(9 citation statements)

References 41 publications

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“…As can be observed, the response in which the highest final biomass concentration was obtained differed from that which generated the highest EPS production. In general, metabolic stress may negatively affect cyanobacteria growth, during which cells use their energy to produce reserve compounds such as carbohydrates and EPS (Santos et al 2019). Condition 9 was an exception, since this condition promoted one of the highest EPS yields and, at the same time, one of the highest final biomass concentrations.…”

Section: Final Biomass Concentration and Eps Yield Under Different Grmentioning

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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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 Grmentioning

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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“…The purity factor of C-PC extracts is generally given by the ratio A 615nm /A 280nm (absorbance at 615 and 280 nm), which correlates the presence of C-phycocyanin and other contaminating proteins. Purity factors above 4.0 are considered as analytical grade and can value more than US$ 15 per mg [5]. Furthermore, Safaei et al [206] reported four-step C-PC purification from Limnothrix sp.…”

Section: Aqueous Two-phase Systemsmentioning

confidence: 99%

“…When compared to higher plants, microalgae have some advantages, such as higher productivity, lack of seasonality and, in the case of biofuel production, do not compete with human food [3,4]. Their remarkable biotechnological potential to produce a range of biocomponents such as pigments [5], lipids [6], polysaccharides [7], biopolymers [8], proteins [9], and vitamins [10], among others, has been widely addressed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Microalgae Biomolecules: Extraction, Separation and Purification Methods

et al. 2020

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Several microalgae species have been exploited due to their great biotechnological potential for the production of a range of biomolecules that can be applied in a large variety of industrial sectors. However, the major challenge of biotechnological processes is to make them economically viable, through the production of commercially valuable compounds. Most of these compounds are accumulated inside the cells, requiring efficient technologies for their extraction, recovery and purification. Recent improvements approaching physicochemical treatments (e.g., supercritical fluid extraction, ultrasound-assisted extraction, pulsed electric fields, among others) and processes without solvents are seeking to establish sustainable and scalable technologies to obtain target products from microalgae with high efficiency and purity. This article reviews the currently available approaches reported in literature, highlighting some examples covering recent granted patents for the microalgae’s components extraction, recovery and purification, at small and large scales, in accordance with the worldwide trend of transition to bio-based products.

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“…Condition 9 was an exception, since this condition promoted one of the highest EPS contents and at the same time one of the highest final biomass concentration. According to some authors, metabolic stress could affect growth negatively, leading to the production of reserve substances (Santos et al, 2019;Soanen et al, 2016). Table 2 shows the results of the coefficients and their interactions, R 2 , lack of fit and the p-values for final biomass concentration and EPS concentration by A. platensis.…”

Section: Final Biomass Concentration and Eps Yield Under Different Grmentioning

confidence: 99%

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 at food industry because its high protein content, pigments, lipids and carbohydrates. The extracellular polymeric substances (EPS) are co-products of secondary metabolism that 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. Characterization of the EPS produced the rheological behavior were also evaluated. The best result for biomass production was obtained at 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) produce the major EPS content (111 mg.g-1) followed by condition 9 (2 g.L-1NaNO3 and 1000 µE.m-2s-1). Rheological studies performed for the product at 5 and 10g.L-1 concentrations revealed a dilute solution behavior.

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Evaluation of the co-production of total carotenoids, C-phycocyanin and polyhydroxyalkanoates by Arthrospira platensis

Cited by 20 publications

References 41 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

Microalgae Biomolecules: Extraction, Separation and Purification Methods

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

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