Identificación de compuestos antibacterianos en macroalgas presentes en la Región del Biobío, Chile

Several studies have been done in order to detect antibiotics from natural sources, seaweeds among them. With the aim of identifying antibacterial compounds, 5 species of seaweeds have been evaluated. The raw extracts were analyzed against bacteria, Gram-positive and negative, with diffusion discs and bioautography, then, they were characterized by GC-MS. The seaweeds Gracilaria chilensis, Ulva sp., and Macrocystis pyrifera present inhibition in the bacterial growth of tested strains. Three molecules, Phytol, 6-methyl-2-phenylquinoline and Neophytadiene were identified from Ulva sp. and M. pyrifera extracts. The results represent a potential use to incorporate these properties into biomaterials.