Results 71 to 80 of about 503,811 (193)

Evaluation the Ingredients and Influence of Thermal Treatment on Physicochemical Properties and Bioactive Compounds of Evernia prunastri from Algeria [PDF]

open access: yesJournal of Food Quality and Hazards Control
Background: Lichen is a symbiotic organism with unique structure composed of a fungal partner and an algal partner. It has been utilized in folk foods and medicines.
F. Bekka-Hadji
doaj  

Cladia aggregata (lichen) from Brazilian northeast: chemical characterization and antimicrobial activity

open access: yesBrazilian Archives of Biology and Technology, 2010
The chemical composition and antimicrobial activity of the Cladia aggregata (Sw.) Nyl. were evaluated. Barbatic acid, depside obtained from C. aggregata, was spectroscopically analyzed and tested, as well as organic extracts.
Mônica Cristina Barroso Martins   +5 more
doaj   +1 more source

Studies on the lichen genus Sticta (Schreber) Ach. : 5., Australian species [PDF]

open access: yes, 1998
Twenty five species of Sticta occur in Australia. These are: Sticta baileyi, S. brevipes, S. camarae, S. caperata, S. cyphellulata, S. diversa, S. duplolimbata, S. filix, S. flavocyphellata, S. fuliginosa, S. howei, S. hypopsiloides, S.
Galloway, David J.
core  

Dyeing of Wool with Lichens and Lichen Substances. [PDF]

open access: yesActa Chemica Scandinavica, 1956
Yngve Johannes Solberg   +4 more
openaire   +1 more source

Dünnschichtchromatographische Isolierung von Flechtenstoffen und deren Identifizierung / Identification of Lichen Substances by Isolation from Thin Layer Chromatogramms

open access: yes, 1978
The use of Eluchrom (Camag, Berlin) for quantitative isolation of liehen substances separated by thin layer chromatography is described. For this method only small quantities of a lichen thallus are needed (less than 0.5 g) to yield sufficient amounts of
Ernst Gerstner, Bernd Renner
core   +1 more source

Synthesis and Antimicrobial Activity of Protocetraric Acid Derivatives

open access: yesOrbital: The Electronic Journal of Chemistry
Antimicrobial resistance has become a serious threat worldwide. To overcome this huge public health problem, the continuous search for new active compounds is urgently needed, and structural modifications and the synthesis of natural products ...
Tatiana Matayoshi   +4 more
doaj   +1 more source

Annotated checklist of Hongkong lichens [PDF]

open access: yes, 1999
An annotated checklist of the lichens of Hong Kong, based on all available literature reports and specimens, including those recently collected by the authors, is presented.
Aptroot, André, Seaward, Mark R.D.
core  

Dissociation and metal-binding characteristics of yellow lichen substances suggest a relationship with site preferences of lichens

open access: yes, 2009
Many species of lichen-forming fungi contain yellow or orange extracellular pigments belonging to the dibenzofurans (usnic acid), anthraquinones (e.g. parietin) or pulvinic acid group. These pigments are all equally efficient light screens, leading us to
Juergens, Sascha-Rene   +4 more
core   +1 more source

Cytotoxic and cytostatic activity of orcinol-type depsides of lichens

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова
Lichens synthesize unique secondary metabolites, most of which are not found in other living organisms. More than 800 such metabolites are known, which can be found in various parts of the lichen thallus.
I. A. Prokopyev   +7 more
doaj   +1 more source

The lichen genus Coccocarpia from the Andaman and Nicobar Islands, India [PDF]

open access: yes, 1999
Seven species of Coccocarpia are reported from the Andaman Islands and two from the Nicobar Islands. These include four species new to India and to the Andaman Islands, viz. C. glaucina, C. cf. myriocarpa, C. sp. 1 and C. sp.
Makhija, Urmila   +2 more
core  

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