Results 61 to 70 of about 911 (189)

Lichen and Its Microbiome as an Untapped Source of Anti‐Biofilm Compounds

open access: yesChemistry &Biodiversity, Volume 22, Issue 4, April 17, 2025.
Lichens and their associated fungi give rise to the evaluation of several extracts and compounds against biofilms. ABSTRACT Lichen substances have been first described in the 1870s, and around 10 000 compounds have been isolated and characterized. Most of them have been evaluated for their activity on planktonic microorganisms (bacteria and fungi ...
Marion Millot   +4 more
wiley   +1 more source

Spiromastixones Inhibit Foam Cell Formation via Regulation of Cholesterol Efflux and Uptake in RAW264.7 Macrophages

open access: yesMarine Drugs, 2015
Bioassay-guided evaluation shows that a deep sea-derived fungus, Spiromastix sp. MCCC 3A00308, possesses lipid-lowering activity. Chromatographic separation of a culture broth resulted in the isolation of 15 known depsidone-based analogues, labeled ...
Chongming Wu   +8 more
doaj   +1 more source

A computational insight into acetylcholinesterase inhibitory activity of a new lichen depsidone [PDF]

open access: yes, 2014
Acetylcholinesterase (AChE) inhibitors are yet the best drugs currently available for the management of Alzheimer's disease. The recent phytochemical investigation has led to the isolation of a new depsidone 1 with moderate AChE activity (1 mu g).
Ece, Abdulilah, Pejin, Boris
core   +2 more sources

Lichenochemical analysis and in vitro antioxidant activity of extracts and gyrophoric acid from lichen Umbilicaria grisea [PDF]

open access: yes, 2023
This research investigates the chemical composition, total phenolic and flavonoid content, and antioxidant activity of acetone, methanol, and ethanol extracts of the lichen Umbilicaria grisea, and its major secondary metabolite, gyrophoric acid.
Kocovic, Aleksandar   +5 more
core   +1 more source

Conventional and innovative approaches to black fungi control for stone heritage preservation

open access: yesIUBMB Life, Volume 77, Issue 3, March 2025.
Abstract Black Meristematic Fungi (BMF) are characterized by a thick melanized cell wall and an isodiametric cellular expansion. BMF represent one of the most damaging groups of microorganisms causing the deterioration of outdoor exposed stone monuments mainly due to the formation of dark spots and patches leading to the darkening of their surface ...
Domenico Celi   +2 more
wiley   +1 more source

Biosynthesis of Depsides, Depsidones, and Diphenyl Ethers from Fungi and Lichens

open access: yesAsian Journal of Organic Chemistry, Volume 14, Issue 2, February 2025.
Depsides are natural products derived from (poly)phenolic acid derivatives connected by ester bonds. Recent research has revealed crucial molecular mechanisms and distinctive enzymatic chemistry underlying the biosynthesis of depsides, as well as related natural products, such as depsidones and diphenyl ethers.
Qiaolin Ji, Yudai Matsuda
wiley   +1 more source

Chemical constituents of the bark of ryparosa kunstleri (Flacourtiaceae) [PDF]

open access: yes, 1997
The bark of Ryparosa kunstleri yielded the triterpenes friedelin, trichadenic acid B, and the new 3B-p-coumaroyl trichadenic acid as its major constituents.
Shaari, Khozirah, Waterman, Peter G.
core  

A Novel b-Orcinol Depsidone of Lichen Lobaria pulmonaria [PDF]

open access: yesAsian Journal of Chemistry, 2014
In continuation of our phytochemical survey of Lobaria pulmonaria has led to the identification of deoxystictic acid in this foliose lichen species for the first time. The isolated β-orcinol depsidone showed moderate anti-hydroxyl radical activity using fluorescence spectroscopy at in vitro conditions.
Pejin, Boris   +4 more
openaire   +2 more sources

Chemical constituents and biological activities of Garcinia cowa Roxb. [PDF]

open access: yes, 2013
Garcinia cowa is an abundant source of bioactive phytochemicals. Phytochemical investigations of the plant parts indicated that the fruit, twig and stem are the best source of secondary metabolites, providing flavonoids, phloroglucinols and xanthones ...
Thunwadee Ritthiwigrom
core  

Biological activities and chemical composition of lichens from Serbia [PDF]

open access: yes, 2014
The aim of this study is to investigate chemical composition of acetone extracts of the lichens Parmelia arseneana and Acarospora fuscata and in vitro antioxidant, antimicrobial, and anticancer activities of these extracts and gyrophoric acid isolated ...
Kosanić, Marijana   +4 more
core  

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