Título do Trabalho
EVALUATION OF ANTIOXIDANT AND ANTIBACTERIAL CAPACITY OF GREEN MICROALGAE SCENEDESMUS SUBSPICATUS
Autores
DANIELLI MATIAS DE MACEDO DANTAS, CARLOS Y. B. OLIVEIRA, ROMERO M. P. B. COSTA, MARIA G. CARNEIRO-DA-CUNHA, ALFREDO OLIVERA GALVEZ, RANILSON S. BEZERRA
Modalidade
Resumo
Área Temática
3 BIOTECNOLOGIA E INOVAçõES
Data de Publicação
26/11/2018
País da Publicação
Brasil
Idioma da Publicação
Português
Página do Trabalho
http://sbfic.org.br/anais_show/140
ISSN
Aguardando...
Palavras-Chave
bioactive activities, extracts, phytochemical
Resumo
Microalgae are considered one of the most promising raw materials for the development of high value products (HVPs) for pharmaceuticals, nutraceuticals and cosmetic industries, as well as being potential sources of protein, vitamins, and minerals for human consumption. Hence, the present research focuses extraction of antioxidant and antimicrobial compounds from Scenedesmus subspicatus using solvents of different polarities. Various solvents (ethanol, methanol, butanol, acetone, dimethyl sulfoxide and water) were used to extract compounds from the green microalgae S. subspicatus and then they were examined for phytochemical screening, antioxidant activity, and antimicrobial properties. In vitro free radical quenching and total antioxidant activity of extracts were investigated with 1,1-diphenyl-2-picryl hydrazyl (DPPH), and compared with catequin and gallic acid as positive controls. The antimicrobial activity was evaluated in gram-negative and gram-positive bacteria. Aqueous extracts and DMSO presented better performance in phytochemical analysis. This result showed consistency in the sequential tests. The antioxidant activity was also better using the two solvents cited above. The extracts acetone, water, and DMSO showed ability to inhibit the growth of B. subtilis. However, only DMSO inhibited the growth of K. pneumoniae and E. coli. Use of the aqueous extract, proven its effectiveness, is an economic protocol and avoids the use of toxic substances in antioxidants and antibacterial products with the green microalgae Scenedesmus subspicatus.
