Abstract:Nannochloris atomus (QUCCCM31) is a local marine microalga showing potential to serve as renewable feedstock for biodiesel production. The investigation of the impact of temperature variation and nitrogen concentrations on the biomass and lipid productivities evidenced that biomass productivity increased with the temperature to reach an optimum of 195 mgL−1 d−1 at 30 °C. Similarly, the lipid content was strongly influenced by the elevation of temperature; indeed, it increased up to ~3 folds when the temperatur… Show more
“…Marine microorganisms are receiving high attention in this aspect as they are believed to be a promising source of molecules that contribute to the development of pharmaceuticals, targeting health-threatening illnesses [8]. For instance, algal-driven products are of especially high interest as they provide some novel opportunities such as high-value lipids, pigments, and exopolysaccharides [14][15][16][17][18]. Furthermore, various marine bacterial and fungal species proved to produce a wide diversity of new compounds that have therapeutic potential working as antibiotics [19].…”
Section: Biodiversity and Marine Resourcesmentioning
The increase in the human population causes an increase in the demand for nutritional supplies and energy resources. Thus, the novel, natural, and renewable resources became of great interest. Here comes the optimistic role of bioprospecting as a promising tool to isolate novel and interesting molecules and microorganisms from the marine environment as alternatives to the existing resources. Bioprospecting of marine metabolites and microorganisms with high biotechnological potentials has gained wide interest due to the variability and richness of the marine environment. Indeed, the existence of extreme conditions that increases the adaptability of marine organisms, especially planktons, allow the presence of interesting biological species that are able to produce novel compounds with multiple health benefits and high economical value. This review aims to provide a comprehensive overview of marine microbial bioprospecting as a growing field of interest. It emphasizes functional bioprospecting that facilitates the discovery of interesting metabolites. Marine bioprospecting was also discussed from a legal aspect for the first time, focusing on the shortcomings of international law. We also summarized the challenges facing bioprospecting in the marine environment including economic feasibility issues.
“…Marine microorganisms are receiving high attention in this aspect as they are believed to be a promising source of molecules that contribute to the development of pharmaceuticals, targeting health-threatening illnesses [8]. For instance, algal-driven products are of especially high interest as they provide some novel opportunities such as high-value lipids, pigments, and exopolysaccharides [14][15][16][17][18]. Furthermore, various marine bacterial and fungal species proved to produce a wide diversity of new compounds that have therapeutic potential working as antibiotics [19].…”
Section: Biodiversity and Marine Resourcesmentioning
The increase in the human population causes an increase in the demand for nutritional supplies and energy resources. Thus, the novel, natural, and renewable resources became of great interest. Here comes the optimistic role of bioprospecting as a promising tool to isolate novel and interesting molecules and microorganisms from the marine environment as alternatives to the existing resources. Bioprospecting of marine metabolites and microorganisms with high biotechnological potentials has gained wide interest due to the variability and richness of the marine environment. Indeed, the existence of extreme conditions that increases the adaptability of marine organisms, especially planktons, allow the presence of interesting biological species that are able to produce novel compounds with multiple health benefits and high economical value. This review aims to provide a comprehensive overview of marine microbial bioprospecting as a growing field of interest. It emphasizes functional bioprospecting that facilitates the discovery of interesting metabolites. Marine bioprospecting was also discussed from a legal aspect for the first time, focusing on the shortcomings of international law. We also summarized the challenges facing bioprospecting in the marine environment including economic feasibility issues.
“…iii) Total lipids were isolated by a modified Folch method as detailed by Saadaoui et al 28,29 Freeze-dried biomass was treated with 0.88% mixture of sodium chloride solution as well as an adequate volume of methanol before an overnight incubation at 4 °C. Following the overnight incubation, a double volume of chloroform was added (analytical grade; Sigma-Aldrich, St. Louis, MO, USA), then the mixture was subjected to a 5 min treatment at 30 Hz, using a TissueLyser II (Qiagen, Hilden Germany) for cell disruption.…”
Section: Biomass Composition and Elemental Analysis Of P Maculatummentioning
To determine the effect of SnO2 nanoparticles on Picochlorum maculatum - isolated from Qatar marine environment, algal growth media is amended with different nanoparticles concentrations (1, 5, 25, 50, and...
“…Using the mutualism between algae and bacteria for the deep treatment of wastewater can increase the biochemical activities of microalgae and bacteria, which is very helpful for the production of microalgal biomass (Bounnit et al, 2020). Establishing an optimal mutualistic relationship between microalgae and bacteria is the most important step in this method of wastewater treatment and biomass production (Contreras‐Angulo et al, 2019).…”
Section: Interactions Between Algae and Bacteriamentioning
The rise in living standards has generated a demand for higher aquatic environmental quality. The microalgal community and the surrounding organic molecules, environmental factors, and microorganisms, such as bacteria, are together defined as the phycosphere. The bacteria in the phycosphere can form consortia with microalgae through various forms of interaction. The study of the species in these consortia and their relative proportions is of great significance in determining the species and strains of stable algae that can be used in sewage treatment. This article summarizes the following topics: the interactions between microalgae and bacteria that are required to establish consortia; how symbiosis between algae and bacteria is established; microalgal competition with bacteria through inhibition and anti‐inhibition strategies; the influence of environmental factors on microalgal–bacterial aggregates, such as illumination conditions, pH, dissolved oxygen, temperature, and nutrient levels; the application of algal–bacterial aggregates to enhance biomass production and nutrient reuse; and techniques for studying the community structure and interactions of algal–bacterial consortia, such as microscopy, flow cytometry, and omics.
Practitioner points
Community structures in microalgal–bacterial consortia in wastewater treatment.
Interactions between algae and bacteria in wastewater treatment.
Effects of ecological factors on the algal–bacterial community in wastewater treatment.
Economically recycling resources from algal–bacterial consortia based on wastewater.
Technologies for studying microalgal–bacterial consortia in wastewater treatment.
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