Enhancing high quality oil accumulation and carbon dioxide fixation by a mixed culture of Chlorella sp. and Saccharomyces cerevisiae

Bioprospecting of microalgae for integrated biomass production and phytoremediation of unsterilized wastewater and anaerobic digestion centrate

“…The elucidation of these characteristics and the further selection and cultivation of strains with these traits would be highly beneficial for the long-term technology development of algal cultivation in wastewater. Also, several authors have reported on the beneficial effects from microalgae-bacteria (de Bashan et al 2004;Mouget et al 2006;Watanabe et al 2005) and microalgae-fungi (Cheirsilp et al 2011;Shu et al 2013;Watanabe et al 2005) co-cultivation strategies. Such partnerships may have mutualistic or even symbiotic relationships (Watanabe et al 2005) in which the algal Bpartners^generate carbon dioxide and consume oxygen in situ (Adlercreutz et al 1982;Mouget et al 2006), supply essential vitamins (Croft et al 2006;Kazamia et al 2012), increase bioavailability of micronutrients (e.g., iron) (Amin et al 2009), and defend against competitors (Evens et al 2011) to impact overall algal cell development (Matsuo 2005) and metabolic profiles (Paul et al 2012).…”

Enhanced microalgal biomass and lipid production via co-culture ofScenedesmus obliquusandCandida tropicalisin an autotrophic system

“…was increased by 31% in co‐culture with S. cerevisiae compared with Chlorella sp. alone, but this was cultured under a mixtrophic mode . There is a strong and species‐specific linkage between algae and other microorganism species and different results can be obtained in different combinations .…”

“…Photosynthesis, which is a reversible set of reactions, is inhibited by excessive dissolved oxygen and levels of dissolved oxygen can reach as high as 35 mg L −1 in enclosed reactors, which inhibits the growth of microalgae . To reduce DO levels, and to enhance photosynthesis, recent studies indicated that microorganisms should be added into microalgal culture systems . The consumption of O 2 by microorganisms can lower O 2 tension within the microenvironment of microalgal cells and create favorable conditions for microalgal growth …”

“…Hence, the consortia or the co‐culture of microalgae and yeast could be a suitable solution to the problem of excessive dissolved oxygen. Studies of microalgae and yeast co‐cultures have focused mainly on its use for the treatment of waste water, culture in a heterotrophic system using organic component or to support the growth of oily yeast . There is little information available regarding the influence of yeast on the growth and lipid production of microalgae in an autotrophic culture system.…”

Struvite as alternative nutrient source for cultivation of microalgae Chlorella vulgaris

“…Algae derived biofuel is considered a promising alternative to fossil fuels [7][8][9]. However, cultivation of algae acquires high nutrient costs with commercial fertilizers [10].…”