Two-stage cultivation of Chlorella vulgaris using light and salt stress conditions for simultaneous production of lipid, carotenoids, and antioxidants

Ali, Hamdy Elsayed Ahmed; El-fayoumy, Eman A.; Rasmy, Wessam E.; Soliman, Ramadan M.; Abdullah, Maha

doi:10.1007/s10811-020-02308-9

Cited by 44 publications

(13 citation statements)

References 60 publications

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“…vulgaris in the present study were conducted in natural photoperiod (i.e., 12:12 light/dark cycle) is likely that photoperiod had a negative influence on the carotenoid profile. In addition, other growing conditions can influence on the carotenoid profile in microalgae, such as nutritional metabolism, growth curve phase and salt stress [ 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

Chlorella vulgaris functional alcoholic beverage: Effect on propagation of cortical spreading depression and functional properties

et al. 2021

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Recent advances in microalgae biotechnology have proven that these microorganisms contain a number of bioactive molecules, that can be used as food additives that help prevent disease. The green microalga Chlorella vulgaris presents several biomolecules, such as lutein and astaxanthin, with antioxidant capacity, which can play a protective role in tissues. In this study, we produced and analyzed a C. vulgaris functional alcoholic beverage (produced using a traditional Brazilian alcoholic beverage, cachaça, and C. vulgaris biomass). Assays were conducted in vitro by radical scavenging tests, and in vivo, by modeling cortical spreading depression in rat brains. Scavenging radical assays showed that consumption of the C. vulgaris alcoholic beverage had a DPPH inhibition of 77.2%. This functional alcoholic beverage at a concentration of 12.5 g L-1 significantly improved cortical spreading depression velocity in the rat brains (2.89 mm min-1), when compared with cachaça alone (3.68 mm min-1) and control (distilled water; 3.25 mm min-1). Moreover, animals that consumed the functional beverage gained less weight than those that consumed just alcohol and the control groups. These findings suggest that the C. vulgaris functional alcoholic beverage plays a protective physiologic role in protecting brain cells from the effects of drinking ethanol.

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Section: Resultsmentioning

confidence: 99%

Chlorella vulgaris functional alcoholic beverage: Effect on propagation of cortical spreading depression and functional properties

et al. 2021

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“…Limitation of nutrients in culture media is a commonly technique used to increase lipid inside the microalgal cells. N and P starvation besides magnesium (Mg) and carbon supplementation can induce biosynthesis of FAs 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

2022

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Biodiesel production from microalgae depends on the biomass and lipid production. Both biomass and lipid accumulation is controlled by several factors. The effect of various culture media (BG11, BBM, and Urea), nutrients stress [nitrogen (N), phosphorous (P), magnesium (Mg) and carbonate (CO 3 )] and gamma (γ) radiation on the growth and lipid accumulation of Dictyochloropsis splendida were investigated. The highest biomass and lipid yield of D. splendida were achieved on BG11 medium. Cultivation of D. splendida in a medium containing 3000 mg L −1 N, or 160 mg L −1 P, or 113 mg L −1 Mg, or 20 mg L -1 CO 3, led to enhanced growth rate. While under the low concentrations of nutrients caused a marked increase in the lipid content. Cultures exposure to 25 Gy of γ-rays, led to an increase in lipid content up to 18.26 ± 0.81 %. Lipid profile showed the maximum presence of saturated fatty acids (SFAs, 63.33%), and unsaturated fatty acids (UFAs, 37.02%). Fatty acids (FAs) recorded the predominance of C16:0, C18:2, C15:0 and C16:1, which strongly proved D. splendida is a promising feedstock for biodiesel production.

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“…For example, accumulation of carotenoids and lipids can be achieved in Tetraselmis sp. under nutrient starvation in combination with high light (Dammak et al, 2021), while the same compounds are induced by salt and highlight stress in Chlorella vulgaris (Ali et al, 2021). However, these induction procedures often take several days or weeks, during which the cultures do not grow and sometimes even lose biomass due to cell respiration.…”

Section: Introductionmentioning

confidence: 99%

“…Strikingly, unlike nutrient starvation and salinity stress, the flashing light may still drive photosynthetic light reactions, allowing a further increase in biomass in the culture. Lastly, because light reactions in photosynthetic organisms take place quickly to avoid photodamage (Schulze et al, 2017b), time needed to induce pigments and fatty acids may be significantly shorter (e.g., hours or few days) compared to traditional two-stage induction processes such as nutrient starvation that can last for several days or weeks (Ali et al, 2021;Dammak et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

High-Value Compound Induction by Flashing Light in Diacronema Lutheri and Tetraselmis Striata Ctp4

Schüler¹,

Walter²,

H³

et al. 2022

SSRN Journal

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Two-stage cultivation of Chlorella vulgaris using light and salt stress conditions for simultaneous production of lipid, carotenoids, and antioxidants

Cited by 44 publications

References 60 publications

Chlorella vulgaris functional alcoholic beverage: Effect on propagation of cortical spreading depression and functional properties

Chlorella vulgaris functional alcoholic beverage: Effect on propagation of cortical spreading depression and functional properties

Impact of Culture Media Composition, Nutrients Stress and Gamma Radiation on Biomass and Lipid of the Green Microalga, Dictyochloropsis splendida as a Potential Feedstock for Biodiesel Production

High-Value Compound Induction by Flashing Light in Diacronema Lutheri and Tetraselmis Striata Ctp4

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