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a.1.(Chem.) Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Elbagermi, "Vibrational spectroscopic identification of beta-carotene in usnic acid and PAHs as a potential Martian analogue," International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, vol.
In an early investigation, Shibamoto and Wei [4] evaluated the mutagenicity of usnic, physodalic, and physodic acids.
Monocyclic aromatics, methyl-[beta]-orcinolcarboxylate, and methylorsellinate exhibited 4-5-fold higher activity than acarbose [16], whereas depsidone salazinic acid, depside sekikaic acid, and dibenzofuran usnic acid showed compatible [IC.sub.50] value as compared to the standard acarbose [36].
It was reported that usnic acid is one of the active ingredients of the supplement Lipokinetix[R], causing hepatocellular damage [12].
Purpose: The present study investigated the neuroactive properties of selected lichen compounds (atranorin, perlatolic acid, physodic acid and usnic acid), for their neurotrophic, neurogenic and acetylcholine esterase (AChE) activities.
de Melo, "Thermodynamic characterization of the prevailing molecular interactions in mixed floating monolayers of phospholipids and usnic acid," Journal of Colloid and Interface Science, vol.
A zinc sulfate and usnic acid preparation used as post-surgical adjuvant therapy in genital lesions by human papillomavirus.
It was once used to treat wounds as the usnic acid it contains has antibiotic properties; | Stereocaulon glareosum - a kind of coral lichen, it lives on bare toxic ground low in nutrients.
They say it will give Infiniband a run for the money, especially when combined with a new NIC from Cisco called usNIC.