Microalgal lipids: A review of lipids potential and quantification for 95 phytoplankton species

Morales, Marjorie; Aflalo, Claude; Bernard, Olivier

doi:10.1016/j.biombioe.2021.106108

Cited by 130 publications

(73 citation statements)

References 248 publications

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“…However, the condition that presented the highest lipid content of all photo-cycles was the short photo-cycle of 0.75:0.25, reaching a total of 23.26%, followed by the photo-cycle of 0.83:0.17 (19.69%). These results may be related to the fact that small pulses of light stimulate the synthesis of fatty acids through the fluidity of membranes under adverse conditions since higher lipid yields are not obtained under ideal growth conditions [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

Sartori

Vendruscolo

Ribeiro

et al. 2022

Life

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The objective of this work was to evaluate the effect of different photo-cycles on the growth and biochemical profile of Scenedesmus obliquus CPCC05, focusing on food interest compounds. The photo-cycle conditions were separated into three groups: long-term photo-cycles (24:0, 22:2, 20:4, 18:6, 12:12, and 10:14 (h:h)), frequency photo-cycles (2, 4, 8, 12, 24, and 48 times per day (t/d)), and short photo-cycles (0.91:0.09, 0.83:0.17, 0.75:0.25, and 0.50:0.50 (s:s)) of light:dark, respectively. The results showed these microalgae can store enough energy to support cell growth for continuous periods of up to 2 h in the dark, without affecting the productivity of the process. This 2 h, when divided into 2 cycles per day (2 t/d), showed the best growth condition (3700 mg L−1), generation time (14.40 h), and maximum biomass productivity (21.43 mg L h−1). This photo-cycle of 2 t/d was also the best condition for the production of total sterols. However, the values of polyunsaturated fatty acids, lipid content, and amino acids obtained higher yields in the short photo-cycle of 0.75:0.25. Thus, the modulation of light cycles becomes an important tool for boosting and directing the production of target molecules in phototrophic cultures of microalgae.

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Section: Resultsmentioning

confidence: 99%

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

Sartori

Vendruscolo

Ribeiro

et al. 2022

Life

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“…A higher content of saturated fatty acids (C16:0, C18:0) increases the cetane number (CN) [80]. FAs profiles change not only with species but also intraspecies [81]. Petkov and Garcia [82] analysed the fatty acid composition of three Chlorella strains, including freshwater and marine strains, and found that species belonging to the same genus contained the same acids but in different ratios.…”

Section: Fatty Acid Composition and Contentmentioning

confidence: 99%

“…This means that a biological factor, directly associated with the metabolic activity of particular microalgal strains, is essential for the observed changes. Analysis of FAs profiles in relation to growth stage and adjusting biomass harvesting to the most beneficial stage for optimal fatty acid composition may be important [81]. In a study carried out by da Costa et al [84], growth phase induced more changes in the fatty acid profile of Tisochrysis lutea than stress associated with N limitation in culture medium.…”

Section: Fatty Acid Composition and Contentmentioning

confidence: 99%

“…The high content of PUFAs may increase nitrogen oxide emissions [86] from the biofuel although according to a study carried out by Wahlen et al [90] biodiesel from the microalgae Chaetoceros gracilis had lower NOx emissions compared to conventional diesel. Low amount of PUFAs have a positive effect on the biodiesel flow properties, especially at low temperatures [81].…”

Section: Fatty Acid Composition and Contentmentioning

confidence: 99%

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Fatty Acid Profile of Microalgal Oils as a Criterion for Selection of the Best Feedstock for Biodiesel Production

et al. 2021

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Microalgae are considered to be potentially attractive feedstocks for biodiesel production, mainly due to their fast growth rate and high oil content accumulated in their cells. In this study, the suitability for biofuel production was tested for Chlorella vulgaris, Chlorella fusca, Oocystis submarina, and Monoraphidium strain. The effect of nutrient limitation on microalgae biomass growth, lipid accumulation, ash content, fatty acid profile, and selected physico-chemical parameters of algal biodiesel were analysed. The study was carried out in vertical tubular photobioreactors of 100 L capacity. The highest biomass content at 100% medium dose was found for Monoraphidium 525 ± 29 mg·L−1. A 50% reduction of nutrients in the culture medium decreased the biomass content by 23% for O. submarina, 19% for Monoraphidium, 13% for C. vulgaris and 9% for C. fusca strain. Nutrient limitation increased lipid production and reduced ash content in microalgal cells. The highest values were observed for Oocystis submarina, with a 90% increase in lipids and a 45% decrease in ash content in the biomass under stress conditions. The fatty acid profile of particular microalgae strains was dominated by palmitic, oleic, linoleic, and linoleic acids. Nutrient stress increased the amount of saturated and unsaturated fatty acids affecting the quality of biodiesel, but this was determined by the type of strain.

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“…The type of lipid and fatty acid composition of the lipidproducing microalgal species affects biofuel quality (Aratboni et al, 2019;Morales et al, 2021). Microalgal lipids typically consist of structural lipids (polar lipids) and storage lipids (non-polar lipids).…”

Section: Introductionmentioning

confidence: 99%

Selection of Tropical Microalgae Species for Mass Production Based on Lipid and Fatty Acid Profiles

et al. 2022

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Numerous recent studies have identified microalgae biofuel as one of the major renewable energy sources for sustainable development due to their high biomass productivity, high lipid content, and availability of locally adapted strains in various geographical locations. There have been minimal studies on the fatty acid composition of lipid production on local microalgae species in Sabah, Malaysia. Thus, screening for local microalgae species capable of producing biodiesel can aid in the selection of suitable species. This study aimed to isolate and identify promising local microalga as biodiesel feedstock for mass cultivation. Eight microalgae species, Acutodesmus obliquus, Chaetoceros muelleri, Isochrysis galbana, Ankistrodesmus falcatus, Chlamydomonas monadina, Chlorella emersonii, Nannochloropsis oculata, and Tetraselmis chuii, were successfully isolated and identified from Kota Kinabalu, Sabah. The isolated microalgae were characterized based on the lipid/biomass productivity, lipid content and fatty acid profiles. These isolates had biomass productivity of 0.11–0.78 g/L/day, lipid content of 11.69–39.00% dry weight, and lipid productivity of 21.11–252.64 mg/L/day. According to GC-MS analyses, four isolates produced more than 80% of C14–C18 fatty acids, which were A. falcatus (95%), C. emersonii (93%), A. obliquus (91%), and C. muelleri (81%). Despite its low biomass productivity, C. muelleri was chosen as the best biodiesel species candidate because of its moderately high lipid productivity (42.90 mg/L/day), highest lipid content (39% dry weight), high level of MUFAs and C14–C18 FAs (81.47%), with the highest oleic acid proportion (28.38%), all of which are desirable characteristics for producing high-quality biodiesel.

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Microalgal lipids: A review of lipids potential and quantification for 95 phytoplankton species

Cited by 130 publications

References 248 publications

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

Fatty Acid Profile of Microalgal Oils as a Criterion for Selection of the Best Feedstock for Biodiesel Production

Selection of Tropical Microalgae Species for Mass Production Based on Lipid and Fatty Acid Profiles

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