Fatty acids in green algae cultivated on a pilot-plant scale

Abstract

Fatty acids from Chlorella vulgaris, Scenedesmus obliquus var. acutus and from a mixed culture of the two strains, Melnik, were converted to methyl esters, separated by gas chromatography, and identified by means of standards. The spectrum of fatty acids included both saturated and unsaturated acids (with odd and even numbers of carbon atoms) from C12 to C22. Fatty acids C16:0, C18:0 and C20:3 were the major components in all cultures. Pure strains differed from the mixed culture in the production of C18:1, C12:0 and C19:2 acids; the first of these was present in higher amounts in pure cultures only, the latter two being found in the mixed culture. The level of lipids was lower as compared to the literature data and their extractability was affected by the manner of preparation of algae and extraction conditions.

Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions

“…Green algae have the bulk of their fatty acids as saturated and unsaturated C18 s , a composition similar to that of vegetable oils (Benemann and Oswald 1996). C. vulgaris, a freshwater, fast-growing green alga, has different lipid production capabilities (30-40% of dry weight) under natural conditions (Pratt and Johnson 1963;Nichols et al 1967;Harris and James 1969;Podojil et al 1978). Its heterotrophic growth mode with the presence of glucose or acetate has been studied in the 1960s and 1970s.…”

Screening of Fresh Water Microalgae from Eastern Region of India for Sustainable Biodiesel Production

“…Lipid accumulation in Scenedesmus obliquus was studied under various culture conditions, which shows most significant increase in lipid up to 43% of dry cell weight (DCW), and 30% of DCW under N-deficiency and P-deficiency, respectively, against 12.7% under control condition (Mandal and Mallick 2009). A freshwater green alga C. vulgaris has different lipid production capabilities (30-40% of dry weight) under natural conditions (Podojil et al 1978;Pratt and Johnson 1963). Chlorella vulgaris, when grown in low Downloaded by [University of Connecticut] at 02:26 09 October 2014 nitrogen-and iron-supplemented medium has lipid contents of 40% and 56.6% (DCW), respectively (Illman et al 2000;Liu et al 2008).…”