High lipid productivity of an Ankistrodesmus-Rhizobium artificial consortium.
Microalgae have great potential as alternative productive platforms for sustainable production of bioenergy, food, feed and other commodities. Process optimization to realize the claimed potential often comprises strains selection and improvement and also developing of more efficient cultivation, harvesting and downstream processing technology. In this work we show that inoculation with the bacterium Rhizobium strain 10II resulted in increments of up to 30% in chlorophyll, biomass and lipids accumulation of the oleaginous microalgae Ankistrodesmus sp. strain SP2-15. Inoculated cultures have reached a high lipid productivity of up to 112 mg L(-1) d(-1) after optimization. The resulting biomass presented significant levels of Ω3 fatty acids including stearidonic acid, suggesting potential as an alternative land-based source of essential fatty acids.
Instituto de Investigaciones en Biodiversidad y Biotecnología - Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Buenos Aires, Argentina.
Mauro
M
Do Nascimento
Instituto de Investigaciones en Biodiversidad y Biotecnología - Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Buenos Aires, Argentina; Laboratorio Integrado de Microbiología Agrícola y de Alimentos, Facultad de Agronomía, Universidad Nacional del Centro de la Provincia de Buenos Aires, Argentina.
Maria de Los Angeles
MLA
Dublan
Instituto de Investigaciones en Biodiversidad y Biotecnología - Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Buenos Aires, Argentina.
Juan Cesar Federico
JCF
Ortiz-Marquez
Instituto de Investigaciones en Biodiversidad y Biotecnología - Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Buenos Aires, Argentina. Electronic address: lcuratti@fiba.org.ar.
Leonardo
L
Curatti
D056804:Biofuels; D018533:Biomass; D002734:Chlorophyll / Q000737:chemistry / Q000378:metabolism; D000460:Chlorophyta / Q000378:metabolism*; D015525:Fatty Acids, Omega-3 / Q000378:metabolism; D008055:Lipids / Q000737:chemistry; D058086:Microalgae / Q000378:metabolism*; D059013:Microbial Consortia; D058433:Photobioreactors; D010802:Phylogeny; D012231:Rhizobium / Q000378:metabolism*; D013997:Time Factors
D056804:Biofuels; D015525:Fatty Acids, Omega-3; D008055:Lipids; D002734:Chlorophyll; C062895:stearidonic acid
Ankistrodesmus/Rhizobium; Biodiesel; Microalgae/bacteria consortium; Ω3 fatty acids