Investigation of lipid production and fatty acid composition in some native microalgae from Agadir region in Morocco

Mir, Youssef; Brakez, Zahra; Alem, Yassine El; Bazzi, L.

doi:10.5897/ajb2020.17230

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…was collected from several sites in the Agadir region of Morocco, while Parachlorella kessleri strain UTEX2229 was provided by the GEPEA, University of Nantes, France. The modified Bold basal medium (BBM) was used for the growth of the two strains of microalgae [40]. All glassware used in the cultivation of microalgae as well as the growth media were sterilized for 20 min at 120 • C. The two strains were grown separately at ambient temperature for 15 days, starting with an initial concentration of 5 × 10 5 cells/mL.…”

Section: Collection and Cultivation Of Microalgaementioning

confidence: 99%

Biosynthesis and Characterization of Silver Nanoparticles Produced by Parachlorella kessleri and Cyclotella spp., and the Evaluation of Their Antibacterial Activity

Ouardy

Lbouhmadi

Attaoui

et al. 2023

IJMS

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Green synthesis is one of the fastest and best ways for ecofriendly nanoparticle synthesis. This study aims to investigate the use of the green microalgae Parachlorella kesseleri and Cyclotella spp. for the biological synthesis of silver nanoparticles (AgNPs). This work focuses on optimizing various parameters necessary for the production and stability of AgNPs. The nanoparticle formation was confirmed by UV-Visible analysis, which revealed the surface plasmon resonance band at 420 nm. The characterization of the AgNPs was performed using UV-visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy coupled with energy dispersive X-ray microanalysis (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The antimicrobial properties of these bioactive AgNPs were also tested, showing excellent antibacterial activity against six bacterial strains, Escherichia coli, multidrug-resistant Escherichia coli, Bacillus clausii, Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella typhi. The biosynthesis of AgNPs from living cultures of microalgae has remarkable antibacterial properties. Other studies are underway in our laboratory to clarify the mechanism of the biosynthesis of these nanoparticles, and their action on bacteria.

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Section: Collection and Cultivation Of Microalgaementioning

confidence: 99%

Biosynthesis and Characterization of Silver Nanoparticles Produced by Parachlorella kessleri and Cyclotella spp., and the Evaluation of Their Antibacterial Activity

Ouardy

Lbouhmadi

Attaoui

et al. 2023

IJMS

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“…Thanks to the diversity of aquatic ecosystems and favorable climatic conditions, microalgae cultivation in Morocco began in 2003, limited to the production of food supplements from spirulina 13 . Subsequently, work focused on the isolation and cultivation of other algal species for numerous biotechnological applications 14 – 17 . However, further research is required to valorize algal resources and develop the microalgae sector in Morocco.…”

Section: Introductionmentioning

confidence: 99%

Influence of salinity, nitrogen and phosphorus concentrations on the physiological and biochemical characteristics of two Chlorophyceae isolated from Fez freshwater, Morocco

Assobhi,

Ennasry,

Latique

et al. 2024

Sci Rep

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Microalgae are widely exploited for numerous biotechnology applications, including biofuels. In this context, Chlamydomonas debaryana and Chlorococcum sp. were isolated from Fez freshwater (Morocco), and their growth and lipid and carbohydrate production were assessed at different concentrations of NaCl, NaNO3, and K2HPO4. The results indicate a small positive variation in growth parameters linked to nutrient enrichment, with no considerable variation in carbohydrate and lipid levels in both algae. Moreover, a negative variation was recorded at increased salinity and nutrient limitation, accompanied by lipid and carbohydrate accumulation. Chlorococcum sp. showed better adaptation to salt stress below 200 mM NaCl. Furthermore, its growth and biomass productivity were strongly reduced by nitrogen depletion, and its lipid production reached 47.64% DW at 3.52 mM NaNO3. As for Chlamydomonas debaryana, a substantial reduction in growth was induced by nutrient depletion, a maximal carbohydrate level was produced at less than 8.82 mM NaNO3 (40.59% DW). The effect of phosphorus was less significant. However, a concentration of 0.115 mM K2HPO4 increased lipid and carbohydrate content without compromising biomass productivity. The results suggest that growing the two Chlorophyceae under these conditions seems interesting for biofuel production, but the loss of biomass requires a more efficient strategy to maximize lipid and carbohydrate accumulation without loss of productivity.

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Biodiesel potentials of microalgal strains isolated from fresh water environment

Azeez

Oyelami

Adekanmi³

et al. 2021

Environmental Challenges

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Investigation of lipid production and fatty acid composition in some native microalgae from Agadir region in Morocco

Cited by 4 publications

References 34 publications

Biosynthesis and Characterization of Silver Nanoparticles Produced by Parachlorella kessleri and Cyclotella spp., and the Evaluation of Their Antibacterial Activity

Biosynthesis and Characterization of Silver Nanoparticles Produced by Parachlorella kessleri and Cyclotella spp., and the Evaluation of Their Antibacterial Activity

Influence of salinity, nitrogen and phosphorus concentrations on the physiological and biochemical characteristics of two Chlorophyceae isolated from Fez freshwater, Morocco

Biodiesel potentials of microalgal strains isolated from fresh water environment

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