Identificación de compuestos antibacterianos en macroalgas presentes en la Región del Biobío, Chile Identification of antibacterial compounds obtained from seaweeds present in the Biobío Region, Chile

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