Antioxidant capacity of phenolic acids extracted from the biomass from Spirulina sp.LEB-18

Adriana Rodrigues Machado, Carolina da Silva Graça, Maria Inês Rodrigues Machado, Leonor Almeida de Souza-Soares

Research output: Contribution to journalArticlepeer-review


This study's objective was to extract and evaluate the antioxidant activity of phenolic acids from biomass Spirulina sp.LEB-18. The analysis of phenolic compounds was made according to the Folin-Ciocalteu method, using gallic acid as the standard. The antioxidant activities were measured using different techniques such as the kidnapping of DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS• + radical capture (2.2'-azinobis (3-sulfonic acid ethylbenzothiazoline-6), the ?-carotene system / linoleic acid, and the antioxidant power of reduction of iron (FRAP), its antioxidant activities determined through the different methodologies, showed more significant inhibition compared to ABTS radical.
Translated title of the contributionCapacidade antioxidante de ácidos fenólicos extraídos da biomassa de Spirulina sp.LEB-18
Original languageEnglish
Pages (from-to)25956-25970
Number of pages15
Journal Brazilian Journal of Development
Issue number3
Publication statusPublished - 2021
Externally publishedYes


  • Inhibition
  • Microalgae
  • Phenols
  • Radicals


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