Abstract

COBOS RUIZ, Marianela; CASTRO GOMEZ, Juan Carlos  and  CERDEIRA GUTIERREZ, Luis Alexander. Biotechnological potential for sustainable biodiesel production of oleaginous microalgae isolated from Itaya River, Loreto, Peru. Ecol. apl. [online]. 2014, vol.13, n.2, pp.169-175. ISSN 1726-2216.

Microalgae are a great alternative in biodiesel production, but the lack of ideal strains has impeded the economic viability in these production systems. The objective of this work was to isolate and identify oleaginous microalgae with potential applications for sustainable biodiesel production. Samples were collected from Itaya River and grown in a CHU medium. Oleaginous microalgae were identified and isolated by standard techniques. Total lipids were extracted with organic solvents and analyzed by HPLC-DAD. 24 microalgal species, of which 50% were oleaginous, were identified. Of these, we isolated Ankystrodesmus sp., Chlorella sp. and Scenedesmus sp., were isolated as well as Ankystrodesmus sp., which stands out because it has 43.6% of total lipids, predominantly triglycerides. In conclusion, several of the Itaya River microalgae species are oleaginous that must be evaluated to determine if they are promising for biodiesel production. Also, the three oleaginous microalgae species isolated show differences in their growth profiles, in the amount of biomass and in the amount and type of fatty acids profile. Ankystrodesmus sp. is the most interesting species, having a high total lipid content (>40%) with a predominance of triglycerides. It is therefore, a promising oleaginous microalgae for sustainable biodiesel production.

Keywords : Amazonia; biofuels; biotechnology; triglycerides.

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