초록
<P><B>Abstract</B></P> <P>CO<SUB>2</SUB> emissions and the large quantity of lignocellulosic waste generated by industrialized nations constitute problems that may affect human health as well as the global economy. The objective of this work was to evaluate the effects of using CO<SUB>2</SUB> and pentoses on the growth, protein profile, carbohydrate content and potential ethanol production by fermentation of <I>Chlorella minutissima</I> biomass. CO<SUB>2</SUB> and pentose supplementation can induce changes in the microalgal protein profile. A biomass production of 1.84g.L<SUP>−1</SUP> and a CO<SUB>2</SUB> biofixation rate of 274.63mg.L<SUP>−1</SUP>.d<SUP>−1</SUP> were obtained with the use of 20% (v.v<SUP>−1</SUP>) CO<SUB>2</SUB>. For cultures with 20% (v.v<SUP>−1</SUP>) CO<SUB>2</SUB> and reduced nitrogen, the carbohydrate content was 52.3% (w.w<SUP>−1</SUP>), and theoretically, 33.9mL.100g<SUP>−1</SUP> of ethanol can be produced. These results demonstrate that <I>C. minutissima</I> cultured with the combined use of CO<SUB>2</SUB> and pentoses generates a biomass with high bioenergetic potential.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Higher CO<SUB>2</SUB> and N promote <I>Chlorella minutissima</I> growth. </LI> <LI> Pentoses have a positive effect on the recovery of CO<SUB>2</SUB> biofixation rates by microalgae. </LI> <LI> CO<SUB>2</SUB> and pentose supplementation affects the microalgae protein profile. </LI> </UL> </P>