Preliminary data of antioxidant activity of green seaweeds (Ulvophyceae) from the Southwestern Atlantic and Antarctic Maritime islands

  • Juliane Bernardi Laboratório de Macroalgas, Departamento de Oceanografia, Universidade Federal de Pernambuco. Av. Professor Moraes Rego, 1235. Cidade Universitária. CEP: 50670-901 Recife, PE. Brasil
  • Edson R. T. P. P. de Vasconcelos Laboratório de Macroalgas, Departamento de Oceanografia, Universidade Federal de Pernambuco. Av. Professor Moraes Rego, 1235. Cidade Universitária. CEP: 50670-901 Recife, PE. Brasil
  • Cintia Lhullier Laboratório de Química Farmacêutica, Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil
  • Thaise Gerber Departamento de Botânica, Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil
  • Pio Colepicolo Neto Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo. São Paulo, SP. Brasil
  • Franciane M. Pellizzari Universidade Estadual do Paraná, Campus Paranaguá. Paranaguá, Brasil
Palabras clave: Green seaweeds, reactive oxygen species, phenolic contents, photoprotectants

Resumen

Background. Seaweeds must survive in highly competitive environments and thus develop defense strategies that may produce highly diversified antioxidant compounds. Goals. The main objective of this work was to assess the antioxidant activity of green seaweeds. Methods. Six species of ulvophycean chlorophytes were collected during spring/ summer, between the Antarctic (Monostroma hariotii, Protomonostroma rosulatum and Ulva hookeriana formerly as U. bulbosa) and the southwestern Atlantic Ocean (Gayralia brasiliensis, Protomonostroma undulatum and Ulva
fasciata). They were then tested for their antioxidant activities using the 2.2-diphenyl-picrylhydrazyl (DPPH) radical scavenging method and by quantification of their phenolic (expressed as gallic acid equivalent GAE and carotenoid contents. Results. Among the evaluated species, P. rosulatum and U. hookeriana showed high antioxidant potential (77.9±2.8 and 53.1±15.0%, respectively) and high phenolic content (176±6.0 and 144.7±8.9 ?g GAE g-1, respectively). These species were collected on King George Island (South Shetland archipelago, around the Antarctic Peninsula) and their higher antioxidant potential may be associated with adaptation to the high incidence of UV rays in this region during summer. In general, tested seaweeds, mainly the samples collected in the Antarctic and Chilean Patagonia, showed higher values of phenolic (from 58.3±2.0 to 144.7±8.9 ?g GAE g-1) and carotenoid contents (from 23.4±0.2 to 51.5±0.1 ?g ?-carotene g-1). Conclusions. The presence and levels of these compounds suggest that the target seaweeds may have high antioxidant potential. Also the antioxidant activity could be associated with the occurrence area of the species instead of the order or taxonomic group to which they belong.

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Cómo citar
Bernardi, J., R. T. P. P. de Vasconcelos, E., Lhullier, C., Gerber, T., Colepicolo Neto, P., & Pellizzari, F. M. (1). Preliminary data of antioxidant activity of green seaweeds (Ulvophyceae) from the Southwestern Atlantic and Antarctic Maritime islands. HIDROBIOLÓGICA, 26(2), 233-239. https://doi.org/10.24275/uam/izt/dcbs/hidro/2016v26n2/Bernardi
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