Results 91 to 100 of about 2,277 (193)
Biologically-active compounds from Brazilian lichens and their affinity with ether [PDF]
, 2017 It can be obtained from lichens biologically-active extracts and pure substances, many of them of phenolic nature. They are usually obtained by using organic solvents, such as diethyl ether.
Buril, M. L. L. +7 more
core +1 more source
Can Parietin Transfer Energy Radiatively to Photosynthetic Pigments? [PDF]
, 2018 The main role of lichen anthraquinones is in protection against biotic and abiotic stresses, such as UV radiation. These compounds are frequently deposited as crystals outside the fungal hyphae and most of them emit visible fluorescence when excited by ...
0000-0001-6498-975X +6 more
core +3 more sources
Antifungal and Anti-Biofilm Activities of Acetone Lichen Extracts against Candida albicans
Molecules, 2017 Candida albicans is a commensal coloniser of the human gastrointestinal tract and an opportunistic pathogen, especially thanks to its capacity to form biofilms.
Marion Millot +4 more
doaj +1 more source
The lichen genus Ochrolechia in the Baltic countries [PDF]
, 2017 Nine Ochrolechia species have been identified in a revision of the genus in the Baltic countries: O. alboflavescens, O. androgyna, O. arborea, O. bahusiensis, O. frigida, O. microstictoides, O. pallescens, O. szatalaensis and O. turneri. O.
Kukwa, Martin
core +1 more source
Ramalina capitata (Ach.) Nyl. acetone extract [PDF]
In the present investigation, effects of Ramalina capitata acetone extract on micronucleus distribution on human lymphocytes, on cholinesterase activity and antioxidant activity (by the CUPRAC method) were examined, for the first time as well as its HPLC
Mitić, Violeta +6 more
core +1 more source
Physiological and ultrastructural effects of acute ozone fumigation in the lichen Xanthoria parietina: the role of parietin and hydration state [PDF]
, 2017 The physiological and ultrastructural effects induced by acute exposure to ozone (O3) were investigated in the lichen Xanthoria parietina. Our working hypothesis was that parietin content and hydration of the thalli may play a role in the modulation of ...
Basile, Adriana +9 more
core +1 more source
Secondary metabolites and their exploitation in medicine [PDF]
, 2009 Many of the medicinal products available today are derived from secondary metabolites. Plants remain the main source of such therapeutic agents but other sources are being explored and exploited.
Baldacchino, Alexandra +2 more
core
π-Stacked polyphenolic dimers: A case study using dispersion-corrected methods [PDF]
, 2013 The accuracy of dispersion-corrected calculations (DFT-D2, DFT-D3 and DFT-NL) is assessed here, with large basis sets (def2-QZVP) to avoid incompleteness effects, for the most stable structure of a real-world polyphenol dimer chosen as an appropriate ...
Bayach, Imène +4 more
core +6 more sources
Secondary Metabolite Profiling of Species of the Genus Usnea by UHPLC-ESI-OT-MS-MS
Molecules, 2017 Lichens are symbiotic associations of fungi with microalgae and/or cyanobacteria, which are considered among the slowest growing organisms, with strong tolerance to adverse environmental conditions.
Francisco Salgado +11 more
doaj +1 more source
Molecules, 2017 The phytochemical investigation on 1 g of materials from Gypsoplaca macrophylla (Zahlbr.) Timdal resulted in the discovery of gypmacrophin A, a rare pentacyclic sesterterpenoid; brialmontin III, a new polysubstituted depside and two known ones ...
Yuan-Fei Zhou +8 more
doaj +1 more source