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Effect of heating conditions of grape seeds on the antioxidant activity of grape seed extracts

Food Chemistry, 2006
Abstract This study was carried out to evaluate the effect of heating and physical conditions of grape seeds on the antioxidant activity of their extracts. Two forms of grape seeds, whole and powdered forms, were heated at four different temperatures −50, 100, 150 and 200 °C.
Seung-Cheol Lee   +2 more
exaly   +2 more sources

Rapid Fractionation of Grape Seed Proanthocyanidins

Journal of Agricultural and Food Chemistry, 2001
A rapid method that permits separation of grape seed proanthocyanidins according to their polymerization degrees has been developed. This method was based on liquid/liquid extraction and relative solubility of these compounds in different solvents (water, ethyle acetate, methanol, and chloroform).
C, Saucier   +4 more
openaire   +2 more sources

Metabolism of Grape Seed Polyphenol in the Rat

Journal of Agricultural and Food Chemistry, 2003
The metabolism of grape seed polyphenol (GSP) has been investigated in rats by high-performance liquid chromatography analysis of the serum and urinary concentrations of the GSP metabolites (+)-catechin (CT), (-)-epicatechin (EC), 3'-O-methyl-(+)-catechin, and 3'-O-methyl-(-)-epicatechin.
Yumiko, Nakamura, Yasuhide, Tonogai
openaire   +2 more sources

Characterization of proanthocyanidins from grape seeds

Fitoterapia, 2000
Leucoselect (grape seed selected proanthocyanidins) was analyzed. HPLC thermospray mass spectrometry (TSP-MS) allowed the detection of monomeric flavan-3-ols and dimeric proanthocyanidins. Fractionation over Sephadex LH-20 resin and analysis of the isolated fractions by gel permeation chromatography (GPC) and electrospray mass spectrometry (ESI-MS) led
B, Gabetta   +6 more
openaire   +2 more sources

Polyphenolics in Grape Seeds—Biochemistry and Functionality

Journal of Medicinal Food, 2003
Grape seeds are waste products of the winery and grape juice industry. These seeds contain lipid, protein, carbohydrates, and 5-8% polyphenols depending on the variety. Polyphenols in grape seeds are mainly flavonoids, including gallic acid, the monomeric flavan-3-ols catechin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate ...
John, Shi   +3 more
openaire   +2 more sources

Improving the quality of grape seed oil by maceration with grinded fresh grape seeds

European Journal of Lipid Science and Technology, 2011
AbstractSamples of refined grape seed oil macerated with grinded fresh grape seeds were analyzed in order to study the consumers' preferences for the new oil characteristics provided by the maceration. Physical and chemical parameters have also been analyzed to study whether they remain unchanged during this process.
José E. Pardo   +4 more
openaire   +1 more source

A child with anaphylaxis to grapes without reaction to grape seed oil

Allergy, 2010
We study the case of a child with anaphylaxis to grapes without reaction to grape seed oil. The child presented no skin reaction and the mother reported no adverse effects associated with the use of this bath oil. Because the lack of adverse effects could be due to both dilution and transient contact of the bath oil a patch test with immediate (after ...
F. Cardinale   +4 more
openaire   +2 more sources

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