Temporal variation in usnic acid concentration in Usnea aurantiaco-atra (Jaq.) Bory
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Date
1991
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Abstract
In Usnea aurantiaco-atra (Jaq.) Bory, growing in the Antarctica, a monthly variation in the usnic acid content, in individual thalli, was studied by means of scanning densitometry (HPTLC). The higher accumulation rates were quantified from January to May; there was a significant decrease in the concentrations from June to December, during the three years of study. In spite of the thalli were taken from a same location, variations could be observed in the usnic acid concentration in the individuals from within each monthly sample
Description
Keywords
Líquenes, Metabolitos de líquenes, Ácido úsnico
Citation
Serie Científica, nº 41, pp. 99-106, 1991