Results 61 to 70 of about 26,435 (268)

(−)-Epicatechin—An Important Contributor to the Antioxidant Activity of Japanese Knotweed Rhizome Bark Extract as Determined by Antioxidant Activity-Guided Fractionation

open access: yesAntioxidants, 2021
The antioxidant activities of Japanese knotweed rhizome bark extracts, prepared with eight different solvents or solvent mixtures (water, methanol, 80% methanol(aq), acetone, 70% acetone(aq), ethanol, 70% ethanol(aq), and 90% ethyl acetate(aq)), were ...
Urška Jug   +2 more
doaj   +1 more source

Secondary metabolites of Bagassa guianensis Aubl. wood: A study of the chemotaxonomy of the Moraceae family [PDF]

open access: yes, 2010
International audienceIn order to explain the durability of the Moraceae plant family, phytochemistry of Bagassa guianensis was performed. Ethyl acetate extract was obtained from the heartwood and 18 secondary metabolites were isolated, including 6 ...
Beauchêne, Jacques   +5 more
core   +2 more sources

Protein hydrolysates in cell culture: Toward multi‐omics characterization

open access: yesBiotechnology Progress, EarlyView.
While protein hydrolysates are widely used in cell culture applications, they remain undefined and variable products. Multi‐omic characterization evaluating composition and function can transition hydrolysates toward semi‐defined media components.
Michelle Combe   +3 more
wiley   +1 more source

Identification and quantification of stilbenes in some Tunisian red wines using UPLC-MS and HPLC-DAD

open access: yesOENO One, 2017
Seven Tunisian red wines mainly from the Mornag appellation were analyzed for resveratrol and analogues. The wines of each variety were evaporated, concentrated, and then subjected to fractionation and purification using XAD16 and DOWEX column ...
Kamel Arraki   +5 more
doaj   +1 more source

Preliminary Results on Contents of Resveratrol in Wine of Organic and Conventional Vineyards [PDF]

open access: yes, 2000
Phytoalexins are compounds synthesised by plants in response to various stresses. In grapevines, these compounds belong to the stilbene family. Several studies have shown that resveratrol is usually triggered by infection of berries by Botrytis cinerea ...
Adrian, M., Lévite, D., Tamm, L.
core  

Über 2‐Oxy‐stilben [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1909
n ...
Kostanecki, S. T. V., Tambor, J.
openaire   +1 more source

Room‐Temperature Helix‐to‐Disc Conversion of Thia[6]helicene S,S‐Dioxides to Coronene via In Situ Phenoxide Anion Generation

open access: yesChemistry – A European Journal, EarlyView.
In situ phenoxide formation at the benzene terminus triggers room‐temperature conversion of thia[6]helicene S,S‐dioxides to coronene. The solubility contrast drives product precipitation, enabling isolation by simple filtration. This pericyclic annulation between the helical termini provides direct access to coronene‐type planar architectures ...
Kaito Seino, Takashi Murase
wiley   +1 more source

E-Stilbenes: General Chemical and Biological Aspects, Potential Pharmacological Activity Based on the Nrf2 Pathway

open access: yesPharmaceuticals
Stilbenes are phytoalexins, and their biosynthesis can occur through a natural route (shikimate precursor) or an alternative route (in microorganism cultures).
Elaine L. S. S. Mendonça   +8 more
doaj   +1 more source

STUDIES ON STILBENES IN RED WINE [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2018
Stilbenes are non-flavonoid phenolic compounds that are synthesized in the form of monomers and oligomers of numerous plant species, including the Vitaceae family.
Luminita VISAN   +3 more
doaj  

Chromatography of wine [PDF]

open access: yes, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic technologies applied for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

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