Temperature effects on lipid properties of microalgae Tetraselmis subcordiformis and Nannochloropsis oculata as biofuel resources

Potential of novel desert microalgae and cyanobacteria for commercial applications and CO2 sequestration

“…The lipid content variation of these strains roughly followed the biomass productivity, with the highest total lipid amounts found where biomass productivity was the highest. This is consistent with the results found by Wei et al (2014), where the lipid content of Tetraselmis subcordiformis first increased and then decreased with increasing temperature-displaying the highest lipid content at 20°C, which was consistent with the Chroococcidiopsis sp. QUCCCM 26 showed an opposite trend, with increasing values of lipids, carbohydrates, and proteins, for decreasing productivities and increasing temperature.…”

“…Tetraselmis is one of the main microalgae species applied as aquaculture feed around the world (Borowitzka 1997); however, to the best of the author's knowledge, there are no reported thermotolerant isolates of this genus, which limits its application in tropical and sub-tropical regions. Most studied isolates have temperature optima around 20-25°C, and no growth at temperatures above 30°C was found reported (Molina et al 1991;Abu-Rezq et al 1999;Wei et al 2014). Even though T. subcordiformis QUCCCM 51 was unable to grow at 40°C, this is the first known report of a Tetraselmis species showing a significant growth at temperatures of 30°C and higher, which could be promising for commercial cultivation in warmer climates.…”

“…Furthermore, presence of both EPA (C20:5) and DHA (C22:6) was found for T. subcordiformis QUCCCM 51, with highest concentrations of 0.53 ± 0.09 and 2.29 ± 0.46%, respectively, for cultivation at 30°C. Compared to Wei et al (2014), who also studied a T. subcordiformis strain, QUCCCM 51 showed significantly higher amounts of 20C FAMEs (52% and 45% as compared to 17-20%), and lower concentrations of both 16C and 18C FAMEs. Furthermore, Wei et al (2014) did not find any DHA, but the amounts of EPA were higher as compared to the results found in this study.…”

Characterization of newly isolated oleaginous microalga Monoraphidium sp. for lipid production under different conditions

“…Microalgae have the ability to accumulate more than 50% of cell dry weight in lipids, mostly in the form of triacylglycerides (TAGs) as storage lipids. However, under optimized growth conditions, TAGs are only produced in small quantities; cells only accumulate large quantities of TAGs under growth limiting stress conditions like nutrient limitation (nitrate and phosphate), temperature [10], pH [11], or light stress [12,13]. Lipid accumulation under nutrient limitation is a well-known phenomenon.…”

Changes in fatty acids profile, monosaccharide profile and protein content during batch growth ofIsochrysis galbana(T.iso)

“…It should be also noted that the comparison between our growth results and those of the other studies is not easy to assess owing to discrepancies in culture conditions (temperature, luminosity, salinity, etc.) which significantly influence micro‐algal growth (Wahidin, Idris & Shaleh ; Khatoon, Rahman, Banerjee, Harun, Suleiman, Zakaria, Lananan, Hamid & Endut ; Wei, Huang & Huang ).…”