Journal
MOLECULES
Volume 27, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/molecules27154990
Keywords
Cetraria; lichens; traditional uses; pharmacology; phytochemistry; botany
Funding
- Spanish Ministry of Science, Innovation and Universities [PID2019-105312GB-100]
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The genus Cetraria consists of cosmopolitan lichen species, primarily located in the Northern Hemisphere. Cetraria islandica, in particular, has been widely used in folk medicine and has been validated by pharmacological studies. The aim of this review is to provide an update on the taxonomy, phytochemistry, traditional uses, and pharmacological properties of the genus Cetraria. Importance: 8/10.
The genus Cetraria s. str. (Parmeliaceae family, Cetrarioid clade) consists of 15 species of mostly erect brown or greenish yellow fruticose or subfoliose thallus. These Cetraria species have a cosmopolitan distribution, being primarily located in the Northern Hemisphere, in North America and in the Eurasia area. Phytochemical analysis has demonstrated the presence of dibenzofuran derivatives (usnic acid), depsidones (fumarprotocetraric and protocetraric acids) and fatty acids (lichesterinic and protolichesterinic acids). The species of Cetraria, and more particularly Cetraria islandica, has been widely employed in folk medicine for the treatment of digestive and respiratory diseases as decoctions, tinctures, aqueous extract, and infusions. Moreover, Cetraria islandica has had an important nutritional and cosmetic value. These traditional uses have been validated in in vitro and in vivo pharmacological studies. Additionally, new therapeutic activities are being investigated, such as antioxidant, immunomodulatory, cytotoxic, genotoxic and antigenotoxic. Among all Cetraria species, the most investigated by far has been Cetraria islandica, followed by Cetraria pinastri and Cetraria aculeata. The aim of the current review is to update all the knowledge about the genus Cetraria covering aspects that include taxonomy and phylogeny, morphology and distribution, ecological and environmental interest, phytochemistry, traditional uses and pharmacological properties.
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