usnic acid

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usnic acid

(ŭs′nĭk)
n.
An antibacterial substance, C18H16O7, obtained from lichens of several genera, including Usnea.
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With the exception of usnic acid, atranorin, physodic acid and perlatolic acid showed no difference in
If Cisco launches Nexus 3500 in the next few months and combines usNIC in the launch it will finally be the first Ethernet solution that can compete against (Infiniband)…(and) shows Cisco intent to kill Infiniband with Ethernet.
granarius of extract and two secondary metabolites (diffractaic acid and usnic acid) of a lichen species, Usnea longissima Arc.
Although the cytotoxicity of usnic acid have been extensively reviewed (Muller, 2001; Cocchietto et al.
2004, The antimicrobial activity of extract of the lichen Cladonia foliaceaandits (-) Usnic acid, atranorin and fumarprotocetraic acid constituents.
Three weeks into taking only half the recommended (dose, Rosenthal slipped into a coma, her liver apparently destroyed by usnic acid, an ingredient in the supplement.
Deglaze includes an antibacterial cleanser containing balsam and usnic acid; a camphor-, clove- and peppermint-containing toner; a clay based mask; Crude Control hydrating emulsion; Dissector drying lotion in regular or tinted formulas and Matt Velvet Dust, a powder for oily and problem skin.
In addition, usnic acid--obtained from species belonging to several genera (such as Usnea, Cetraria, Cladonia, and Parmelia)--promises to be useful in antibiotic salves, herbicides, and deodorants.
The cupped, greenish yellow podetia containing usnic acid and the red apothecia and pycnidia are diagnostic.
However, the latter species deviates from its closest relative only by its cortical chemistry, atra norin being replaced by usnic acid.
Among the known constituents of usnea are usnic acid, protolichesterinic acid, and oreinol derivatives.
For the first time, the researchers can explain how usnic acid is toxic to plants (phytotoxicity).