| the antimicrobial activity of extracts of the lichen cladonia foliacea and its (-)-usnic acid, atranorin, and fumarprotocetraric acid constituents. | the antimicrobial activity of the chloroform, diethyl ether, acetone, petroleum ether, and ethanol extracts of the lichen cladonia foliacea and its (-)-usnic acid, atranorin, and fumarprotocetraric acid constituents against 9 bacteria and fungi has been investigated. the extracts and pure compounds alone were found active against the same bacteria and the same yeasts. bacillus cereus, bacillus subtilis, staphylococcus aureus, streptococcus faecalis, proteus vulgaris, listeria monocytogenes, aero ... | 2004 | 15241936 |
| in vitro cytotoxic activities of (+)-usnic acid and (-)-usnic acid on v79, a549, and human lymphocyte cells and their non-genotoxicity on human lymphocytes. | this study investigates cytotoxic and genotoxic activities of (+)-usnic acid and (-)-usnic acid isolated from the lichen ramalina farinacea and the lichen cladonia foliacea, respectively. to determine the activities of these acids, we used the mtt assay on v79 (chinese hamster lung fibroblast like) and a549 (human lung carcinoma epithelial like) cell lines and cytokinesis-blocked micronucleus (cbmn) assay in human lymphocytes in vitro. our results suggest that both enantiomers of usnic acid are ... | 2006 | 17393655 |
| effects of nitrogen deposition and soil fertility on cover and physiology of cladonia foliacea (huds.) willd., a lichen of biological soil crusts from mediterranean spain. | we are fertilizing a thicket with 0, 10, 20 and 50 kg nitrogen (n) ha(-1) yr(-1) in central spain. here we report changes in cover, pigments, pigment ratios and fvfm of the n-tolerant, terricolous, lichen cladonia foliacea after 1-2 y adding n in order to study its potential as biomarker of atmospheric pollution. cover tended to increase. pigments increased with fertilization independently of the dose supplied but only significantly with soil nitrate as covariate. β-carotene/chlorophylls increas ... | 2010 | 21071125 |
| biomonitoring of ²¹°po and ²¹°pb using lichens and mosses around coal-fired power plants in western turkey. | mosses and lichens are useful biological indicators of environmental contamination for a variety of metals and radionuclides of both natural and artificial origin. these plants lack a well-developed root system and rely largely on atmospheric deposition for nourishment. therefore in the study, different lichens (cladonia convoluta, cladonia foliacea) and mosses (homalothecium sericeum, hypnum lacunosum, hypnum cupressiforme, tortella tortuosa, didymodon acutus, syntrichia ruralis, syntrichia int ... | 2011 | 21458118 |
| antioxidant, antimicrobial and antiproliferative activities of five lichen species. | the antioxidative, antimicrobial and antiproliferative potentials of the methanol extracts of the lichen species parmelia sulcata, flavoparmelia caperata, evernia prunastri, hypogymnia physodes and cladonia foliacea were evaluated. the total phenolic content of the tested extracts varied from 78.12 to 141.59 mg of gallic acid equivalent (ga)/g of extract and the total flavonoid content from 20.14 to 44.43 mg of rutin equivalent (ru)/g of extract. the antioxidant capacities of the lichen extracts ... | 2011 | 21954369 |