scholarly journals Chemical Studies on Lichens. 5. Separation and Identification of the Antipodes of Usnic Acid by Thin Layer Chromatography.

1967 ◽  
Vol 21 ◽  
pp. 1376-1377 ◽  
Author(s):  
Gerd Bendz ◽  
Gerd Bohman ◽  
Johan Santesson ◽  
Pär Holmberg ◽  
G. Eriksson ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Usnic Acid ◽  
Chemical Studies ◽  
Layer Chromatography

A new leprose Leprocaulon (Ascomycota, Leprocaulales) from Great Britain

2017 ◽  
Vol 49 (3) ◽  
pp. 183-188 ◽  
Author(s):  
Alan ORANGE ◽  
Peter M. EARLAND-BENNETT ◽  
Christopher J. B. HITCH ◽  
Mark POWELL
Keyword(s):  
Fatty Acids ◽  
Great Britain ◽  
North America ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Usnic Acid ◽  
Its Sequence ◽  
Chemical Studies ◽  
Calcareous Rock ◽  
Layer Chromatography

AbstractLeprocaulon calcicola is described as new from walls in SE England; it is leprose, pale to mid blue-grey, and contains zeorin and usnic acid. It differs from L. knudsenii from North America in its habitat on mortared walls rather than non-calcareous rock and in its ITS sequence. ‘Lecanora’ ecorticata differs in the yellower colour, and the presence of unidentified fatty acids and traces of unknown terpenoids (but not zeorin) by thin-layer chromatography. Leprose lichens with usnic acid are still poorly known and sequencing must be used to support morphological and chemical studies.

Quantification of Usnic Acid in Usnea Florida by Densitometric High Performance thin Layer Chromatography

1991 ◽  
Vol 14 (8) ◽  
pp. 1447-1452 ◽  
Author(s):  
Maria A. J. Polónia ◽  
António F. Carneiro ◽  
Madalena M. M. Pinto
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Usnic Acid ◽  
Layer Chromatography

New Records of Graphidaceous Lichens from Western Ghats, India

2014 ◽  
Vol 37 (4) ◽  
pp. 477-481
Author(s):  
H. Biju ◽  
R. Bagool ◽  
Sanjeeva Nayaka
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Silica Gel ◽  
Western Ghats ◽  
New Records ◽  
The Family ◽  
Chemical Studies ◽  
Solvent Systems ◽  
Layer Chromatography ◽  
Lichen Flora

Six lichen species belonging to the family Graphidaceae namely Graphis malacodes Nyl., Graphis proserpens Vain., Hemithecium aphaneomicrosporum Makhija & Adawadkar, Hemithecium lamii (Redgr.) V. Tewari & Upreti, Pallidogramme chlorocarpoides (Nyl.) Staiger & al. and Phaeographis divaricoides Räsänen are described as new additions to the lichen flora of Western Ghats. Chemical studies were carried out by thin layer chromatography using Merk F254 precoated silica gel aluminium plates and B.D.A. solvent systems.

scholarly journals Chemical Studies on Lichens. 4. Thin Layer Chromatography of Lichen Substances.

1967 ◽  
Vol 21 ◽  
pp. 1162-1172 ◽  
Author(s):  
Johan Santesson ◽  
Gerd Bohman ◽  
Johan Santesson ◽  
Pär Holmberg ◽  
G. Eriksson ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Lichen Substances ◽  
Chemical Studies ◽  
Layer Chromatography

scholarly journals Antidermatophytic Activity of the Fruticose Lichen Usnea orientalis

2016 ◽  
Author(s):  
Ashutosh Pathak ◽  
Anupam Dikshit ◽  
Dalip Kumar Upreti
Keyword(s):  
Secondary Metabolites ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Clinical Laboratory ◽  
Usnic Acid ◽  
Broth Microdilution ◽  
Fruticose Lichen ◽  
Biological Sources ◽  
Layer Chromatography ◽  
Antidermatophytic Activity

In the present study, the new biological sources in the form of lichen Usnea orientalis Motyka was screened for its antidermatophytic potential. Six species of dermatophytes were chosen on the basis of their prevalence for antidermatophytic assays, and the Clinical Laboratory Standard Institute (CLSI)-recommended broth microdilution procedure was used to detect the efficacy of extract against dermatophytes. Thin layer chromatography of lichen extracts reveals the presence of two secondary metabolites viz. salazinic acid and usnic acid. U. orientalis extract exhibited promising antidermatophytic activity against all tested pathogens. Amongst all tested pathogens, E. floccosum exhibited most susceptibility towards extract, whereas T. mentagrophytes exhibited the least susceptibility. Topical application of U. orientalis extract might be helpful in the cure of dermal infections.

scholarly journals Chemical Studies on Lichens. 2. Thin Layer Chromatography of Aliphatic Lichen Acids.

1966 ◽  
Vol 20 ◽  
pp. 1181-1181 ◽  
Author(s):  
Gerd Bendz ◽  
Johan Santesson ◽  
Leif Tibell ◽  
E. Kulonen ◽  
J. Brunvoll ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Chemical Studies ◽  
Layer Chromatography
Sign in / Sign up

Export Citation Format

Share Document