Results 181 to 190 of about 15,786 (221)

Malvidin-3-O-glucoside Chemical Behavior in the Wine pH Range

Journal of Agricultural and Food Chemistry, 2019
Anthocyanins are natural pigments responsible for the typical color of red wines and are critically associated with the wine commercial value and longevity. Thus, understanding the molecular bases of the anthocyanin chemical behavior in the complex wine environment is a central issue to the enological sector.
Martino Forino, Angelita Gambuti, Paolo Luciano, Luigi Moio   +3 more
openaire   +3 more sources

Charge equilibria and pKa of malvidin-3-glucoside by electrophoresis

Analytical Biochemistry, 2003
Paper electrophoresis has been used over the pH range 1.2 to 10.4 to measure apparent pK(a) values for malvidin-3-O-glucoside of pK(a(1)) 1.76+/-0.07, pK(a(2)) 5.36+/-0.04, and pK(a(3)) 8.39+/-0.07. Using solvent partitioning between buffered aqueous solutions and n-octanol, several micro-pK(a) constants for malvidin-3-O-glucoside were also identified,
Asenstorfer, R., Iland, P., Tate, M., Jones, G.   +3 more
openaire   +3 more sources

Malvidin 3-glucoside-5-glucoside sulphates from Babiana stricta

Phytochemistry, 1994
Abstract From violet flowers of Babiana stricta two new malvidin 3,5-diglucoside sulphates and a malonyl malvidin 3,5-diglucoside were isolated and characterized as malvidin 3-glucoside-5-(2″-sulphatoglucoside), malvidin 3-glucoside-5-(2″-sulphato-6″-malonylglucoside) and malvidin 3-glucoside-5-(6″-malonylglucoside) by means of spectroscopic and ...
Kenjiro Toki, Norio Saito, Takayuki Ueda, Tomohiko Chibana, Atsushi Shigihara, Toshio Honda   +5 more
openaire   +1 more source

Glyceraldehyde Bridging between Flavanols and Malvidin-3-glucoside in Model Solutions

Journal of Agricultural and Food Chemistry, 2006
Hydroxyl radicals (.OH) seem to have an important role in the oxidation of wine constituents and the production of important electrophilic aldehydes and ketones. In this experiment, glyceraldehyde, a .OH oxidation product of glycerol, recently described in wine, reacts with (+)-catechin, (-)-epicatechin, and malvidin-3-glucoside (Mv3gl), in model ...
Laurie, V.F., Waterhouse, A.L.
openaire   +2 more sources

Anti-inflammatory effect of Malvidin-3-glucoside and Malvidin-3-galactoside

Bio-Medical Materials and Engineering
Malvidin is one of the most wide-spread anthocyanidins which exhibits potential antioxidant, anti-cancer and anti-inflammatory activities. Malvidin mainly exists as Malvidin-3-glucoside (Mv-3-glc) and Malvidin-3-galactoside (Mv-3-gal). The aim of the study was to investigate the two's anti-inflammatory effects on endothelial cells, as well as their ...
Huang Wu-Yang, Wang Jian, Li Chun-Yang
openaire   +1 more source

Ultraviolet Fluorescence of Cyanidin and Malvidin Glycosides in Aqueous Environment

Spectroscopy Letters, 2007
Abstract The fluorescence of cyanidin 3‐glucoside (Cy 3‐glc), cyanidin 3,5‐diglucoside (Cy 3,5‐diglc) and malvidin 3,5‐diglucoside (Mv 3,5‐diglc) in binary solvents (water–methanol, 1∶1, v/v) and in water at pH 4–5.5 has been studied. The absorption spectra, steady‐state fluorescence spectra, and fluorescence excitation spectra have been measured ...
Regina Drabent, Barbara Pliszka, Graz˙yna Huszcza‐Ciołkowska, Bogdan Smyk   +3 more
openaire   +1 more source

Interactions between catechin and malvidin-3-monoglucoside in model solutions

Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung, 1995
The interaction between (+)-catechin and malvidin-3-monoglucoside was studied in model solutions at pH values of 3.2 and 4 over a 30-day period at 32 °C. With time, a progressive browning, accompanied by a hypso-chromic shift in their visible absorption maxima, was observed in the solutions.
Celestino Santos-Buelga, Santiago Bravo-Haro, Juli�n C. Rivas-Gonzalo   +2 more
openaire   +1 more source

Inhibitory effect of Malvidin on TNF-α-induced inflammatory response in endothelial cells

European Journal of Pharmacology, 2014
Vascular inflammatory responses are key mediators of endothelial dysfunction that leads to various pathologies in many diseases including atherosclerosis and cancer. The purpose of the study was to investigate the effects and molecular mechanisms of Malvidin, a natural pigment with strong antioxidant activity, on regulating inflammatory response in ...
Wu-Yang Huang, Chun-Yang Li
exaly   +3 more sources

Kinetics of Malvidin‐3‐Glucoside Condensation in Wine Model Systems

Journal of Food Science, 1983
ABSTRACT Wine model systems containing equimolar quantities of malvidin‐3‐glucoside and d‐catechin, with and without acetaldehyde, were stored anaerobically at 22, 32, 42, and 52°C. Malvidin‐3‐glucoside and d‐catechin disappearance and polymer appearance were monitored by HPLC and colorimetric methods.
ELIZABETH S. BARANOWSKI, CHARLES W. NAGEL   +1 more
openaire   +1 more source

Ultrahigh Pressure Facilitates the Acylation of Malvidin and Chlorogenic Acid to Increase the Stability and Protective Effect of Malvidin Derivatives on H₂O₂-Induced ARPE-19 Cells

Journal of Agricultural and Food Chemistry, 2021
We explored the effects of ultrahigh-pressure technology and chlorogenic acid on the color stability and structure-activity relationship of malvidin (MV). Experimental conditions were optimized through single-factor experiments and response surface analysis at a pressure of 300 MPa, mass ratio of MV to chlorogenic acid of 1:3.64 (w/w), and time of 5 ...
Xinyao Liu, Sheng Li, Zhitong Wang, Xinyuan Wang, Yang He, Liankui Wen   +5 more
openaire   +2 more sources