Biochemical composition of green microalgae Pseudoneochloris marina grown under different temperature and light conditions

Gonçalves, Carolina Ferrer; Menegol, Tânia; Rech, Rosane

doi:10.1016/j.bcab.2019.101032

Cited by 34 publications

(7 citation statements)

References 53 publications

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“…Carotenoid concentrations increased when the light intensities were raised for C. vulgaris and D. salina cultures while maximum carotenoid concentra- tion for A. convolutus, T. striata was found under the mild light intensities. This outcome asserts that carotenoids damage is correlate with both the photoprotective role and light-harvesting complexes of carotenoids in the cell compartments, decreasing the singlet oxygen production and scavenging free radicals stimulated by high light and nutrient deficiency (Gonçalves et al 2019;Faraloni and Torzillo, 2017). Increasing the light intensity resulted in an enhanced β-carotene productivity in Dunaliella salina (Sun et al 2018).…”

Section: Results Of Validation Studies For Experimental and Actual Datamentioning

confidence: 84%

Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus

Şener¹,

Demirel²,

İmamoğlu³

et al. 2021

ase

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Commercial carotenoids of green microalgae have become significant especially for their applications in the cosmetic, pharmaceutical, food and feed industries. Effects of physical and chemical parameters on carotenoid contents in isolated microalgal species have been investigated. The variables of shaking rate, nitrogen concentration and light intensity affect biomass production and the synthesis of carotenoids in the green microalgae were investigated using the statistical design by Box-Behnken (BBD) employing Response Surface Methodology (RSM). Furthermore, the optimized cultivation conditions using BBD for Chlorella vulgaris, Ankistrodesmus convolutus, Dunaliella salina, Tetraselmis striata were determined using the spectrophotometric method to enhance carotenoid concentration. A. convolutus within the green algae was detected with the highest carotenoid concentration. The optimum conditions results indicated that the growth of A. convolutus (0.55 mg/L) and production of total carotenoids (25.1138 mg/g biomass) were found at the stirrer rate of 100 rpm under the light intensity of 100 μE/m 2 s, and in the nutrient component of 8.82 mM NaNO 3 . These conditions were validated experimentally for total carotenoid yield (24.13 mg/g biomass). After that the production was performed in a flat-plate photobioreactor with a volume of 6L based on the optimized conditions and the carotenoid profile was defined by HPLC-DAD using standards such as violaxanthin, astaxanthin and β-carotene. This study proposes that the RSM approach can be used to define optimal conditions for large-scale production of carotenoids by A. convolutus.

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Section: Results Of Validation Studies For Experimental and Actual Datamentioning

confidence: 84%

Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus

Şener¹,

Demirel²,

İmamoğlu³

et al. 2021

ase

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“…In outdoor cultures, abiotic factors such as sunlight and temperature affect the metabolism, growth and biochemical composition of photoautotrophic microalgae biomass 35 . These are directly related to the light intensity and the daily and seasonal variations of the sunlight and temperature, inherent to geospatial position and local climate.…”

Section: Resultsmentioning

confidence: 99%

“…Effects of the climate on kinetic performance of system In outdoor cultures, abiotic factors such as sunlight and temperature affect the metabolism, growth and biochemical composition of photoautotrophic microalgae biomass. 35 These are directly related to the light intensity and the daily and seasonal variations of the sunlight and temperature, inherent to geospatial position and local climate. In this context, Table 2 shows the kinetic parameters exhibited by S. obliquus in different geographical positions of the equatorial and tropical climatic zone.…”

Section: Resultsmentioning

confidence: 99%

Mapping the performance of photobioreactors for microalgae cultivation. Part II: equatorial and tropical climate zone

Dias

Lasta

Vendruscolo

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Considering that the greatest proportion of microalgae commercial production is realized outdoors, it is critically important to highlight the role of the local climate in the performance of the processes. Currently, there is a tendency to identify locations with suitable climates for the large‐scale implementation of microalgae‐based processes. Therefore, this study proposed to map the performance of photobioreactors for microalgae culture. Fourteen types of climates distributed in 33 geographical locations representative of the equatorial and tropical zones of the world were evaluated. The simulated climatic elements were solar irradiation, temperature and photoperiod. RESULTS The results showed that the tropical with dry winter (Aw), tropical with dry summer (As), tropical monsoon (Am), tropical fully humid (Af), hot steppe (BSh) and hot desert (BWh) climates favored the system productivities. The highest biomass productivity (0.347 g L–1 d–1) and lipid (0.048 g L–1 d–1) were registered in the Aw simulation. CONCLUSION The results of this study provide a useful database of the effects of climate for the microalgae photoautotrophic production. © 2020 Society of Chemical Industry

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“…That has been observed in different microalgae species, such as marine diatom pseudo- Nitzschia ( Ayache et al 2020 ). There is an accumulation of primary compounds such as proteins, lipids, and carbohydrates, and minerals used as mediators in biochemical cycles of cellular stress regulation ( Gonçalves et al, 2019 ). An increase in biomass might be caused by an increase in its primary metabolites, such as lipids ( Table 2 ) that might confer better resistance to the plasma membrane damaged by the intense salinity ( Benavente-Valdés et al, 2016 ) .…”

Section: Discussionmentioning

confidence: 99%

Optimization of growing conditions for pigments production from microalga Navicula incerta using response surface methodology and its antioxidant capacity

González-Vega

Cárdenas-López

López‐Elías

et al. 2021

Saudi Journal of Biological Sciences

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Navicula incerta is a marine microalga distributed in Baja California, México, commonly used in aquaculture nutrition, and has been extended to human food, biomedical, and pharmaceutical industries due to its high biological activity. Therefore, the study aimed to optimize culture conditions to produce antioxidant pigments. A central composite experimental design and response surface methodology (RSM) was employed to analyze the best culture conditions. The medium (nitrogen-deficient concentrations), salinity (PSU = Practical Salinity Unity [g/kg]), age of culture (days), and solvent extraction (ethanol, methanol, and acetone) were the factors used for the experiment. Chlorophyll a (Chl a) and total carotenoids (T-Car), determined spectroscopically, were used as the response variables. The antioxidant capacity was evaluated by DPPH • and ABTS •+ radical inhibition, FRAP, and anti-hemolytic activity. According to the overlay plots, the optimum growth conditions for Chl a and T-Car production were the following conditions: medium = 0.44 mol·L -1 of NaNO 3 , salinity = 40 PSU, age of culture: 3.5 days, and solvent = methanol. The pigment extracts obtained in these optimized conditions had high antioxidant activity in ABTS •+ (86.2–92.1% of inhibition) and anti-hemolytic activity (81.8–96.7% of hemolysis inhibition). Low inhibition (33–35%) was observed in DPPH • . The highest value of FRAP (766.03 ± 16.62 μmol TE/g) was observed in the acetonic extract. The results demonstrated that RSM could obtain an extract with high antioxidant capacity with potential applications in the biomedical and pharmaceutical industry, which encourages the use of natural resources for chemoprevention of chronic-degenerative pathologies.

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Biochemical composition of green microalgae Pseudoneochloris marina grown under different temperature and light conditions

Cited by 34 publications

References 53 publications

Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus

Optimization of Culture Conditions for Total Carotenoid Amount Using Response Surface Methodology in Green Microalgae / Ankistrodesmus convolutus

Mapping the performance of photobioreactors for microalgae cultivation. Part II: equatorial and tropical climate zone

Optimization of growing conditions for pigments production from microalga Navicula incerta using response surface methodology and its antioxidant capacity

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