Chemical composition of the Ramalina fraxinea (L.) Ach. thallus

Abstract

The folowing lichen acids were isolated from Ramalina fraxinea (L.) Ach. thallus: usnic, obtusatic and sekkikaic, as well as d-arabitol and three mucilage and amine fractions. In the mucilage hydrolysates glucose, galactose, glucosamine, arabinose, xylose, rhamnose and glucuronic acid were found. The following amines were discovered chromatographically: choline, betaine, histamine, acetyl-choline and (β-phenylethylamine; amino acids: aspartic, glutamic, γ-aminobutyric, serine, threonine, alanine, proline, moreover d-mannitol and free arabinose and glucose.