Obtenção de biomassa microalgal de Chlorella vulgaris tolerante a herbicidas

Abstract

Microalgae represent a universe of biotechnology and biodiversity. They are microorganisms of great applications and that can be cultivated with agro-industrial residues, generating socioenvironmental and economic gains. The cultivation of microalgae with herbicides allows its application as a possible biofertilizer, making it adapted to this medium. The study carried out had as objectives: to carry out scientometric research on studies with residues used as substrates in the cultivation of microalgae; cultivate Chlorella vulgaris with sodium permeate and with Jaguar® and Trueno® herbicides (in three doses: 60, 600 and 6000 µg.L-1) and study ecotoxicity with Artemia salina and Lactuca sativa; carry out bibliometric research on ecotoxicity tests for herbicides in microalgae. For scientometrics, he searched for data in the WoS and did not advance in the publications in the area, in addition to being able to evaluate the main residues and analyze trends and gaps. With the crops, Chlorella vulgar had a good growth with permeability to powdered latex (C / N = 20), obtaining a cell concentration of 5.2 gL-1 and with lesser benefits with herbicides (Jaguar® and Trueno® at 600 µg .L-1, 4.6 and 4.8 gL-1, respectively), as well as the lower lipid content (about 13% less). For the bibliometric study, using the Methodi Ordinatio method, 20 most relevant articles from the ecotoxicity tests of herbicides in microalgae were ranked. The study indicates a trend in research and the importance of future research in the area of development, optimization and validation of toxicity assessment by multispecies microalgae in herbicidal variables.