Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 114, Issue -, Pages 1161-1167Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2018.04.020
Keywords
Antioxidant activity; Antimicrobial activity; Polysaccharide; Yerba mate
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [3079/2015-8]
- Coordenacao de Aperfeicoamento do Pessoal do Ensino Superior (CAPES)
- CAPES Foundation, Ministry of Education, Brazil [88881.120010/2016-01]
- CNPq
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This study investigated the antioxidant, antimicrobial and cytotoxic properties of a purified yerba mate polysaccharide. The yerba mate polysaccharide showed a prominent antioxidant activity as evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH center dot)-radical scavenging activity (IC50 = 1.25 +/- 0.10 mg/mL), 3-ethyl benzothiazoline-6-sulphonic acid (ABTS center dot+)-radical scavenging activity (IC50 = 0.41 +/- 0.05 mg/mL), and hydroxyl scavenging activity (IC50 = 3.36 +/- 0.31 mg/mL). The antioxidant activity evaluated as the ferric ion reduction power (FRAP) and oxygen radical absorbance radical assay (ORAC), expressed as trolox equivalents, were 20.84 +/- 1.61 mu M TE/mg and 55630 +/- 12.83 mu M TE/mg, respectively. The purified yerba mate polysaccharide presented high antimicrobial activity against several bacterial and fungal strains; however, no cytotoxicity against all four tumor human cell lines assessed. (C) 2018 Elsevier B.V. All rights reserved.
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