Bioprospecção de microalga na bacia do rio apa com potencial para produção de proteínas utilizando meios a base de NPK

Abstract

With the worsening of climate change, coupled with the increase in the human population, there are concerns about the food supply for society in the coming years, generating a growing demand for technologies that promote the obtaining of quality food, with high efficiency and in a sustainable manner. In this scenario, microalgae, organisms responsible for most of the photosynthetic activity on the planet, present themselves as promising sources of nutrients, including proteins for human consumption, in addition to being “carbon sinks”. The production of these organisms in isolated environments results in low impact on natural ecosystems and are used to obtain various products such as pharmaceuticals, biofuels, pigments, cellulose, proteins, as well as services such as bioremediation. A species collected in the APA River basin was isolated, identified as a member of the Chlorella genus, which was cultivated and subjected to growth analysis and protein quantification assays in different NPK-based culture media. It was possible to determine that at concentrations of NPK 10-10-10 1.0 g.L-1 supplemented with magnesium sulfate 0.2 g.L-1, there was low protein accumulation compared to the levels described in the literature for other species of the same genus, thus as in media supplemented with sodium nitrate (0.075 g.L-1 ) and urea (0.026 g.L-1). Under cultivation conditions, therefore, the species had low potential forproducing proteins for human consumption.