Differential lipid and fatty acid profiles of photoautotrophic and heterotrophic Chlorella zofingiensis: Assessment of algal oils for biodiesel production

Lipid accumulation and growth of Chlorella zofingiensis in flat plate photobioreactors outdoors

“…The possible reason could be that under nitrogen limitation the available nitrogen was exhausted quickly, any carbon dioxide fixed subsequently was therefore converted into lipid or carbohydrate rather than protein (Richardson et al, 1969). The highest lipid content (54.5%) of C. zofingiensis observed in this study was similar to that (52%) obtained under indoor conditions by Liu et al (2011). In contrary, the lipid contents under sufficient nitrogen condition before the 25th day were almost the same (21.5%, dcw) the slightly increase in the end might be caused by the exhaustion of nitrogen in the culture medium, which triggered the initiation of the lipid accumulation.…”

“…But, the highest l max (0.994 day À1 ) with a doubling time of 0.697 days was also obtained in group A after the lag phase (Table 1). Previous studies reported that the l max of C. zofingiensis reached 0.769 day À1 in indoor cultivation (Liu et al, 2011). The high l max (0.994 day À1 ) obtained in this study showed that this alga can grow faster under natural sunlight conditions than in indoor condition.…”

“…Many early reports showed that C. zofingiensis could grow fast with a high specific growth rate of 0.769 day À1 and could be cultured under different conditions (Orosa et al, 2000;Ip and Chen, 2005;Sun et al, 2008). Liu et al (2010Liu et al ( , 2011 reported that C. zofingiensis has strong ability to accumulate lipids with the lipid content reaching 52% (dcw) in indoor cultivation. Those research have shown the potential of C. zofingiensis for producing feedstock of biodiesel.…”

Scenedesmus sp. NJ-1 isolated from Antarctica: a suitable renewable lipid source for biodiesel production

“…4d). Furthermore, as the main constituent of NL (Ramadan and Mörsel 2002;Liu et al 2011), TAGs in Phase II were about three to four-times as high as those in Phase I (Fig. 4a).…”

Screening high oleaginous Chlorella strains from different climate zones

“…Table 2 Contents (% of dry cell weight) and fatty acid compositions (% of total fatty acids) of total lipids and triacylglycerols of five Chlorella species cultured at 25°C. 12.99 ± 1.06 Chen et al, 2011a;Chu et al, 2013;Li et al, 2012;Li et al, 2013;Liu et al, 2011;Mata et al, 2010;Miao and Wu, 2006). However, only C. sorokiniana, C. vulgaris and C. pyrenoidosa are ''true'' Chlorella species according to their biochemical and phylogenetic characteristics (Huss et al, 1999;Krienitzi et al, 2004).…”