Usnea extract is a broad-spectrum antibiotic. It has a strong inhibitory effect on most Gram-positive bacteria and also inhibits the growth of tuberculosis.
If combined with a small amount of streptomycin, its inhibition of tuberculosis can be greatly enhanced, and toxicity very small. Usnic acid also inhibits protozoa and vaginal trichomoniasis. Feeding usnic acid to partially hepatectomized rats has the effect of promoting liver regeneration. Formulations containing usnic acid have significant therapeutic effects in cancer patients. Clinically, it has a certain effect on fighting malaria. It has certain curative effects on trauma, burns and skin diseases, cervical inflammation, nipple cracking, and prevention of perineal rupture. In addition, it can also be used as a raw material for the antibiotic "pyrazine".
Alias: Lichenic acid
Plant source: dry lichens of the Usneaceae plant Usnea diffracta vain. and Usnea longissima ach.
Properties: yellow rhombic prismatic crystals (acetone).
Cas : 125-46-2
Molecular formula: c18h16o7
Molecular weight: 344.32
Alias: Usnic acid; (+)-usnic acid; (+)-usnei
n; (+)-usniacin; d-2,6-diacetyl-7,9-dihydroxy-8,9b-dimet
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