Production, isolation and bioactive estimation of extracellular polysaccharides of green microalga Neochloris oleoabundans

Li, Yanqun; Wang, Caijuan; Liu, Huazhong; Su, Junbiao; Lan, Christopher Q.; Zhong, Min; Xue-qiong, HU

doi:10.1016/j.algal.2020.101883

Cited by 22 publications

(22 citation statements)

References 76 publications

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“…LB-EPS and TB-EPS show a different composition and functionalities. As reported by Li et al (2020), LB-EPS show the highest Pb(II) adsorption abilities in comparison to TB-EPS and SB-EPS (soluble EPS) [9]. The role of LB-EPS seems to be more important in response to adverse environmental changes than the role of other EPS fractions; hence, they serve a protection function in algal metabolism [10].…”

Section: Characteristics Of Extracellular Polymeric Substancesmentioning

confidence: 69%

Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes

2021

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Microalgae are natural resources of intracellular compounds with a wide spectrum of applications in, e.g., the food industry, pharmacy, and biofuel production. The extracellular polymeric substances (EPS) released by microalgal cells are a valuable bioproduct. Polysaccharides, protein, lipids, and DNA are the main constituents of EPS. This review presents the recent advances in the field of the determinants of the synthesis of extracellular polymeric substances by microalgal cells and the EPS structure. Physical and chemical culture conditions have been analyzed to achieve useful insights into the development of a strategy optimizing EPS production by microalgal cells. The application of microalgal EPS for flocculation and mechanisms involved in this process are also discussed in terms of biomass harvesting. Additionally, the ability of EPS to remove toxic heavy metals has been analyzed. With their flocculation and sorption properties, microalgal EPS are a promising bioproduct that can potentially be used in harvesting algal biomass and wastewater management.

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Section: Characteristics Of Extracellular Polymeric Substancesmentioning

confidence: 69%

Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes

2021

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“…Mixotrophic cultivations have been reported for polysaccharide production by Neochloris oleoabundans (1g L −1 ) [20] and Arthrospira platensis (0.30 g L −1 ) [21]. Glucose and sucrose can be used as carbon sources to promote the accumulation of exopolysaccharides by Chorella sp.…”

Section: Influential Parameters In the Production Of Polysaccharides By Microalgaementioning

confidence: 99%

“…Chromatographic techniques, such as ion-exchange chromatography, size exclusion chromatography, and affinity chromatography, are widely used to purify and fractionate microalgal polysaccharides [20,[45][46][47]. Ion exchange chromatography uses the difference between the charge properties of molecules to promote separation.…”

Section: Extraction and Fractionation/purificationmentioning

confidence: 99%

“…This fact can be related to the formation of hydrogen bonds due to hydroxyl or amino groups in the chain structure [8]. Thus, rheological properties can be used as a strategy to assess the polysaccharide content in microalgae [20].…”

Section: Rheological Propertiesmentioning

confidence: 99%

“…The new protocol resulted in findings close to those obtained using conventional chromatography, in addition to advantages such as less time and cost requirements. In another study, Li et al [20] proposed an indirect quantitative method of rapid assessment to determine exopolysaccharides based on their rheological properties in the medium. Thus, it is concluded that the development of affordable and practical methods can be considered an interesting approach to overcome the barriers of the quantification of exopolysaccharides from microalgae.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

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Microalgae Polysaccharides: An Overview of Production, Characterization, and Potential Applications

et al. 2021

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Microalgae and cyanobacteria are photosynthetic microorganisms capable of synthesizing several biocompounds, including polysaccharides with antioxidant, antibacterial, and antiviral properties. At the same time that the accumulation of biomolecules occurs, microalgae can use wastewater and gaseous effluents for their growth, mitigating these pollutants. The increase in the production of polysaccharides by microalgae can be achieved mainly through nutritional limitations, stressful conditions, and/or adverse conditions. These compounds are of commercial interest due to their biological and rheological properties, which allow their application in various sectors, such as pharmaceuticals and foods. Thus, to increase the productivity and competitiveness of microalgal polysaccharides with commercial hydrocolloids, the cultivation parameters and extraction/purification processes have been optimized. In this context, this review addresses an overview of the production, characterization, and potential applications of polysaccharides obtained by microalgae and cyanobacteria. Moreover, the main opportunities and challenges in relation to obtaining these compounds are highlighted.

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Emerging Techniques for Extraction and Applications of Biomolecules from Microalgae

Mankoti,

Chauhan,

Meena

et al. 2024

Environmental Science and Engineering

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Production, isolation and bioactive estimation of extracellular polysaccharides of green microalga Neochloris oleoabundans

Cited by 22 publications

References 76 publications

Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes

Extracellular Polymeric Substances (EPS) as Microalgal Bioproducts: A Review of Factors Affecting EPS Synthesis and Application in Flocculation Processes

Microalgae Polysaccharides: An Overview of Production, Characterization, and Potential Applications

Emerging Techniques for Extraction and Applications of Biomolecules from Microalgae

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