Katalog - Lichenological literature

39239

Muchnik E.E. (2025): Lichenological studies in the Serebryanoborsky experimental forestry: History, results, and future prospects, Contemporary Problems of Ecology, 18: 985–994

Lichenological studies in the Serebrynoborsky experimental forestry of the Institute of Forest Science, Russian Academy of Sciences, located in Moscow and Moscow oblast, were conducted from 2010 to 2023 using the route method. Collection and laboratory processing of materials were carried out using generally accepted lichenological methods. The list of lichen species of the Serebryanoborsky forestry includes 115 species of lichens and closely related fungi, 15 of which are known only from literature … Read more...

39238

Kosanić M., Stanojković T., Petrović N., Manojlović A. & Manojlović N. (2026): Extraction, characterization and biological activities of selected lichens growing in Serbia, Journal of Fungi, 12(2): 83 [14 p.]

This study presents a comparative analysis of secondary metabolites and antioxidant, antimicrobial, and anticancer activities of acetone extracts obtained from the lichens Lepraria incana and Pertusaria amara. HPLC-UV analysis identified divaric acid, divaricatinic acid, norstictic acid, divaricatic acid and usnic acid in L. incana, and conprotocetraric acid, protocetraric acid, picrolichenic acid and atranorin in P. amara. Free radical scavenging capacity and reducing power assays were employed … Read more...

39237

Kai H., Kinoshita K., Harada H., Uesawa Y., Maeda A., Suzuki R., Okada Y., Takahashi K. & Matsuno K. (2017): Establishment of a direct-injection electron ionization-mass spectrometry metabolomics method and its application to lichen profiling, Analytical Chemistry, 89: 6408−6414

Direct-injection electron ionization-mass spectrometry (DI-EI-MS) is a multivariate analysis method useful for characterizing biological materials. We demonstrated the use of DI-EI-MS for metabolic profiling using several closely related lichen species: Cladonia krempelhuberi, C. gracilis, C. pseudogymnopoda, and C. ramulosa. The methodology involves conversion of total ion chromatograms to integrated chromatograms and assessment of reproducibility. The qualitative DI-EIMS method was used to profile … Read more...

39236

Popovici V., Ozon E.A., Arsene A.L. & Schröder V. (2026): Plants, lichens, fungi, and algae extracts and derivatives with antimicrobial properties for nutrition and health, Antibiotics, 15(1): 111 [4 p.]

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39235

Solberg Y. (1986): Chemical constituents of the lichen species Cetraria islandica, Journal of the Hattori Botanical Laboratory, 60: 391–406

The chemical content of the lichen species Cetraria islandica has been studied. Concentration of a chloroform-methanolic extract led to the isolation of fractions containing hydrocarbons, fatty alcohols, fatty acids, keto-acids, dicarboxy lic, acids, sterols, mono-, sesqui-, di- and triterpenoids, and some aromatic compounds. The C17-alkadiene, linoleic- and linolenic acid, ketostearic acid. Protolichesterinic acid and fatty acids similar to protolichesterinic acid were found as the main constituents. of … Read more...

39234

Gehlawat A., Prakash R. & Pandey S.K. (2020): An efficient enantioselective approach to multifunctionalized γ-butyrolactone: concise synthesis of (+)-nephrosteranic acid, RSC Advances, 10: 19655–19658

A short, efficient and novel approach for multifunctionalized γ-butyrolactone paraconic acids and its application to the total synthesis of (+)-nephrosteranic acid from readily available PMB (R)-glycidyl ether as a starting material are described. Key transformations include asymmetric Michael addition catalyzed by chiral diphenylprolinol silyl ether and stereoselective α-methylation. Read more...

39233

Carlson R.M. & Oyler A.R. (1976): Direct methods for α-methylene lactone synthesis using itaconic acid derivatives, Journal of Organic Chemistry, 41(26): 4065–4069

Anions of itaconic acid derivatives [R02CCHC(=CH2)C02] are versatile intermediates for the synthesis of α-methylene lactones. The addition of these anionic species to aldehydes or ketones and subsequent lactonization and hydrolysis have been utilized for the synthesis of a variety of compounds including protolichesterinic acid, nephrosterinic acid, and canadensolide. Read more...

39232

Halıcı M.G., Yatsyna A., Güllü M. & Yiğit M. (2025): A new lichenized fungal species from East Antarctica: Austroplaca giginyakii, Mantar Dergisi, 16(2): 125–132

Austroplaca giginyakii sp. nov., a new lichenized fungus species discovered in East Antarctica, is described and its taxonomic status is evaluated using an integrative approach. The species was investigated through morphological, chemical, and molecular (nrITS) analyses. Phylogenetic results based on ITS sequences indicate that A. giginyakii forms a distinct clade within the genus Austroplaca. Although morphologically similar to A. darbishirei, it is distinguished by its deeper red-orange thallus, … Read more...

39231

Nguyen D.D., Duong T.-H., Nguyen T.-P., Nguyen H.T. & Nguyen C.H. (2024): Antibacterial potential of ethyl 3,5-dibromoorsellinate, a derivative of diphenyl ethers from Graphis handelii, against methicillin-resistant Staphylococcus aureus, ACS Omega, 9(50): 50012–50023

Staphylococcus aureus is a human pathogen responsible for a variety of diseases, from skin, soft tissue, and lung infections to severe cases such as meningitis, infective endocarditis, and bacteremia. The high level of antibiotic resistance in these pathogens, exemplified by methicillin-resistant Staphylococcus aureus (MRSA), necessitates the development of effective antibiotics. Thus, this work introduced the chemical synthesis of ethyl 3,5-dibromoorsellinate, a derivative of ethyl orsellinate from … Read more...

39230

Le Pogam P., Schinkovitz A., Legouin B., Le Lamer A.-C., Boustie J. & Richomme P. (2015): Matrix-free UV-laser desorption ionization mass spectrometry as a versatile approach for accelerating dereplication studies on lichens, Analytical Chemistry, 87: 10421–10428

The present study examined the suitability of laser desorption/ionization time-of-flight mass spectrometry (LDI-MS) for the rapid chemical fingerprinting of lichen extracts. Lichens are known to produce a wide array of secondary metabolites. Most of these compounds are unique to the symbiotic condition but some can be found in many species. Therefore, dereplication, that is, the rapid identification of known compounds within a complex mixture is crucial in the search for novel natural products. Over … Read more...