Resumo

ZELADA, B. Ruth  e  PASTOR DE ABRAM, Ana. Estudio fitoquímico de Usnea durietzii mot. (Usneaceae): Phytochemistry study from Usnea durietzii mot. (Usneaceae). Rev. Soc. Quím. Perú [online]. 2012, vol.78, n.4, pp.264-276. ISSN 1810-634X.

In Peru, there are few lichen phytochemical studies as they require much greater attention. Lichen substances have different purposes, such as antibacterial, antitumor, herbicide and insecticide. The genus Usnea has a wide variety of species, Usnea durietzii the specie used in this study doesn't report any phytochemical studies on national or international level to date. The objective of this research was to isolate and identifying lichenic components from Usnea durietzii. Through the screening of its phytochemistry we were able to determine quinones, triterpens and steroids, and to a lesser degree phenols, tannins, fats, lactones and coumarins, sugar and flavonoids. The extraction of secondary metabolites was made from extracts with solvents of increasing polarity, and permitted us to isolate and characterize the spectroscopic compound C₁₈H₁₆O₇ usnic acid and the compound C₁₈H₁₂O₁₀ salazinic acid.

Palavras-chave : phytochemical; lichen; Usnea durietzii; usnic acid; salazinic acid; spectroscopic technics.

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