Microalgae starch: A promising raw material for the bioethanol production.

Ethanol is currently the most successful biofuel and can be produced from microalgal biomass (third-generation). Ethanol from microalgal biomass has advantages because it does not use arable land and reduces environmental impacts through the sequestration of CO from the atmosphere. In this way, micro and macroalgal starch, which is structurally similar to that from higher plants can be considered a promise raw material for the production of bioethanol.

Innovative pH sensors developed from ultrafine fibers containing açaí (Euterpe oleracea) extract.

This work describes the development of ultrafine fibers with açaí (Euterpe oleracea Mart.) extract (AE) for use as pH sensors with potential applications in the food industry. The fibers were produced by electrospinning with polymeric solutions composed of 7% (w v) polycaprolactone, 2% (w v) polyethylene oxide and 3% (w v) AE solubilized in chloroform and methanol (3:1).

Green alga cultivation with nanofibers as physical adsorbents of carbon dioxide: Evaluation of gas biofixation and macromolecule production.

The objective of this study was to evaluate the biofixation and production of biocompounds by Chlorella fusca LEB 111 cultivated with different concentrations of carbon dioxide (CO) adsorbent nanofibers in their free form or retained. Cultures were grown in 15% (v v) CO with 0.1, 0.

Cultivation strategy to stimulate high carbohydrate content in Spirulina biomass.

This study focused on verifying if production of Spirulina biomass with high carbohydrate content is stimulated by reduced supply of nitrogen associated to addition of NaHCO or CO at different flow rates and times of injection. For this purpose, addition of 0.25 g L of NaNO allowed Spirulina to accumulate up to 49.