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viniferin/vinova loza
Veza se sprema u međuspremnik
Page 1 od 63 rezultati
Effect of lime-induced leaf chlorosis on ochratoxin A, trans-resveratrol, and epsilon-viniferin production in grapevine (Vitis vinifera L.) berries infected by Aspergillus carbonarius.
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Berries of Vitis vinifera L. cv. Merlot, grown on a neutral or calcareous soil, were infected, at phenological phases of veraison and ripening, by a conidial suspension of Aspergillus carbonarius to control ochratoxin A production and trans-resveratrol- and epsilon-viniferin-induced synthesis as
Variability in the Content of Trans-Resveratrol, Trans-ε-Viniferin and R2-Viniferin in Grape Cane of Seven Vitis vinifera L. Varieties during a Three-Year Study.
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Grape canes are a waste product from viticulture that show potential as an industrially extractable source of stilbenes, which are valuable for medical and other purposes. In this work, grape canes collected in three consecutive years (2014-2016) at six different places in South Moravia, Czech
Effects of elicitors on the production of resveratrol and viniferins in cell cultures of Vitis vinifera L. cv Italia.
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Methyl jasmonate, jasmonic acid and chitosan were tested as elicitors on cell suspension cultures obtained from Vitis vinifera cv Italia to investigate their effect on stilbene production. Stilbene accumulation in the callus, grown under nonelicited conditions, was also investigated. Calli and cell
Enhancement of viniferin production in Vitis vinifera L. cv. Alphonse Lavallée Cell suspensions by low-energy ultrasound alone and in combination with methyl jasmonate.
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This study examined for the first time the effect of low-energy ultrasound (US), used alone or in combination with methyl jasmonate (MeJA), on viniferin production in cell cultures of Vitis vinifera L. cv Alphonse Lavallée. Cell suspensions were exposed for 2 min to US (power 30, 60, and 90 mW
Stability testing of resveratrol and viniferin obtained from Vitis vinifera L. by various extraction methods considering the industrial viewpoint.
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Solid by-products generated in the winemaking process, can comprise valuable bioactive substances such as resveratrol and viniferin, which can be used in whole range of sectors including medicine, pharmacy, cosmetic industry etc. The changes in content of those stilbenes in extracts obtained by
Antitumoural activity of viniferin-enriched extracts from Vitis vinifera L. cell cultures.
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The aim of this work was to evaluate the effect of stilbenes from different cultivars of Vitis vinifera on tumour proliferation. Extracts were obtained from elicited V. vinifera cell cultures and characterised by HPLC/DAD/MS. Cell growth was evaluated in four human cancer cell lines and in normal
Stilbenes from Vitis vinifera L. Waste: A Sustainable Tool for Controlling Plasmopara Viticola.
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Stilbene-enriched extracts from Vitis vinifera waste (cane, wood, and root) were characterized by UHPLC-MS. Eleven stilbenes were identified and quantified as follows: ampelopsin A, (E)-piceatannol, pallidol, (E)-resveratrol, hopeaphenol, isohopeaphenol, (E)-ε-viniferin, (E)-miyabenol C,
3-Hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase inhibitory effect of Vitis vinifera.
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Activity-guided fractionation of the methanol extract of Vitis vinifera bark led to the isolation of epsilon-viniferin, ampelopcin A, vitisin A and vitisin B. Vitisin A and vitisin B showed a remarkable inhibitory activity against 3-hydroxy-3-methylglutaryl-Coenzyme A (HMG-CoA) reductase with IC50
A new specific BACE-1 inhibitor from the stembark extract of Vitis vinifera.
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A new resveratrol dimer, (+)-vitisinol E (1) which demonstrated inhibitory activity on BACE-1 (beta-site APP-cleaving enzyme 1) in vitro, was isolated from the stembark extract of Vitis vinifera (Vitaceae) together with four known resveratrol oligomers, (+)-epsilon-viniferin (2), (+)-ampelopsin A
Preparative purification of antiamyloidogenic stilbenoids from Vitis vinifera (Chardonnay) stems by centrifugal partition chromatography.
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Five stilbenoids, E-resveratrol, E-piceatannol, (+) E-(epsilon)-viniferin, (+)-ampelopsin A and vitisin C were isolated from methyl tert-butyl ether (MtBE) stem extract of Vitis vinifera (Chardonnay cv). Their purification on a preparative scale was obtained by centrifugal partition chromatography
Direct identification and characterization of phenolic compounds from crude extracts of buds and internodes of grapevine (Vitis vinifera cv Merlot).
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The crude methanol extracts of latent buds and internodes Vitis vinifera L. cv. Merlot were used for the determination of phenolic compounds by a combination of reverse phase HPLC with diode array detection (HPLC-DAD) and mass spectrometry (LC-MS). This method allowed the identification of 9
Enhanced Stilbene Production and Excretion in Vitis vinifera cv Pinot Noir Hairy Root Cultures.
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Stilbenes are defense molecules produced by grapevine in response to stresses including various elicitors and signal molecules. Together with their prominent role in planta, stilbenes have been the center of much attention in recent decades due to their pharmaceutical properties. With the aim of
High-performance liquid chromatography/electrospray ionization tandem mass spectrometric investigation of stilbenoids in cell cultures of Vitis vinifera L., cv. Malvasia.
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Cell suspension cultures of Vitis vinifera L., particularly after elicitation, have shown the ability to biosynthesize several stilbenoids. In this work the application of specific tandem mass spectrometry (MS/MS) experiments and the integration with data from UV-vis spectra, available only for the
Bioactive stilbenes from Vitis vinifera grapevine shoots extracts.
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BACKGROUND
Viticultural residues from commercial viticultural activities represent a potentially important source of bioactive stilbenes such as resveratrol. The main aim of the present study was therefore to isolate, identify and perform biological assays against amyloid-β peptide aggregation of
Bioassay-guided isolation of antiproliferative compounds from grape (Vitis vinifera) stems.
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The fractionation, guided by cell-growth inhibition assay, of the EtOAc crude extract from grape stems of the Sicilian Vitis vinifera variety 'Nerello Mascalese' allowed identification often constituents, isolated either as pure compounds (1, 3-5, 7-10) or inseparable mixtures (2a-d and 6a-e). The
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