Results 131 to 140 of about 398 (162)
Some of the next articles are maybe not open access.
THE PREPARATION OF UMBELLIFERONE
Transactions of the Royal Society of South Africa, 1925(1925). THE PREPARATION OF UMBELLIFERONE. Transactions of the Royal Society of South Africa: Vol. 13, No. 3, pp. 255-257.
Ernest George, J. Moir
openaire +1 more source
Antimicrobial properties of umbelliferone derivatives
Phytochemistry, 1971Abstract The inhibitory effects of umbelliferone and a number of its alkyl and acyl derivatives on the growth of a variety of bacteria, yeasts and molds have been examined. Herniarin and similar alkyl ethers are more effective antimicrobial agents than umbelliferone.
L. Jurd, A.D. King, K. Mihara
openaire +1 more source
Umbelliferon: a review of its pharmacology, toxicity and pharmacokinetics
Inflammopharmacology, 2023Coumarin, a plant secondary metabolite, has various pharmacological activities, including antioxidant stress and anti-inflammatory effects. Umbelliferone, a common coumarin compound found in almost all higher plants, has been extensively studied for its pharmacological effects in different disease models and doses with complex action mechanisms.
Zhi Lin, Xi Cheng, Hui Zheng
openaire +2 more sources
Uptake and modification of umbelliferone by various seedlings
Phytochemistry, 2019Inspired by the recently discovered phenomenon of "horizontal natural product transfer" we investigated the putative uptake of phenolic specialized metabolites. Umbelliferone was chosen for this case study, since this coumarin as well as its derivatives can easily be determined by HPLC analyses. Barley (Hordeum vulgare L.), radish (Raphanus sativus L.),
Tahani, Hijazin +4 more
openaire +2 more sources
Ultrafast resonance energy transfer in the umbelliferone–alizarin bichromophore
Phys. Chem. Chem. Phys., 2014Fast and efficient intramolecular energy transfer takes place in the umbelliferone–alizarin bichromophore; the process is well described by the Förster mechanism.
Lapini Andrea +11 more
openaire +10 more sources
Antihyperglycemic Effect of Umbelliferone in Streptozotocin-Diabetic Rats
Journal of Medicinal Food, 2006The present study was designed to investigate the antihyperglycemic effect of Umbelliferone (UMB) in normal and streptozotocin (STZ)-diabetic rats. Diabetes was induced in adult male albino rats of the Wistar strain, weighing 180-200 g, by administration of STZ (40 mg/kg of body weight) intraperitoneally.
B, Ramesh, K V, Pugalendi
openaire +2 more sources
Magnetic activated release of umbelliferone from lipid matrices
International Journal of Pharmaceutics, 2010Lipid matrices containing dispersed superparamagnetic iron oxide (SPIO) particles were investigated as a magnetic field-responsive drug delivery system. Lipid matrices were prepared by combining myristyl alcohol, fatty acid coated SPIO particles, and umbelliferone (UMB).
Dandan, Yi +2 more
openaire +2 more sources
Antioxidant role of Umbelliferone in STZ-diabetic rats
Life Sciences, 2006The objective of the study was to investigate the role of Umbelliferone (UMB) on lipid peroxidation, nonenzymic and enzymic antioxidants in the plasma and liver of streptozotocin (STZ)-induced diabetic rats. Adult male albino rats of Wistar strain, weighing 180-200 g, were induced diabetes by administration of STZ (40 mg/kg b.wt.) intraperitoneally ...
B, Ramesh, K V, Pugalendi
openaire +2 more sources
Gustatory receptors required for sensing umbelliferone in Drosophila melanogaster
Insect Biochemistry and Molecular Biology, 2015Studies of taste modality using the animal model Drosophila melanogaster have elucidated a number of uncharacterized mechanisms of sensory responses. Gustatory receptors expressed in taste organs are not only responsible for the acceptance and rejection of different foods, but are also involved in the process of selecting an oviposition site.
Seeta, Poudel +3 more
openaire +2 more sources
Fluorescence of some simple umbelliferone derivatives
Collection of Czechoslovak Chemical Communications, 1979The absorption and fluorescence spectra of umbelliferone were studied; it was found that in the excited state the basicity of the α-pyrone part of the molecule increases to such an extent that it exceeds that of the phenolate oxygen of the molecule. This is responsible for the neutral nondissociated form of umbelliferone being only in nonpolar medium ...
openaire +1 more source