Polyphenols are present in foods and beverages and are related to sensorial qualities such as color, bitterness, and astringency, which are relevant in wine, tea, grape juice, and other products. These compounds occur naturally in forms varying from simple phenolic acids to complex polymerized tannins. Thus, it is reasonable to expect that grape-derived products elaborated in the presence of sk...

The aim of this study was to assess the antibacterial activity of grape vinegar against F. psychrophilum.The antibacterial activity was determined by using agar well diffusion assays. The vinegar was tested against two strains of F.psychrophilum.While the highest inhibition zone diameter of grape vinegar was determined as 60 mm, the lowest was 47mm against to the pathogen. Grape vinegar display...

INTRODUCTION The first grape juice known to be processed in the United States was produced by Dr. Thomas B. Welch, a New Jersey dentist, in 1869 with the newly developed pasteurization process. Assisted by his wife and their 17-year-old son, Charles, he extracted juice from 18 kg (40 lb) of grapes (Vitis labrusca L.). They filtered and bottled the juice and pasteurized it in hot water to kill t...

Two procyanidin fractions, namely oligomers and polymers isolated from grape seed methanolic extract were characterized. Phenolic composition and procyanidin purity of these fractions were determined by normal-phase and reverse-phase HPLC, thioacidolysis-HPLC, ESI-MS analyses, formaldehyde-HCl precipitation and elemental analysis. Antioxidant activities of these fractions and other well-known a...

The recent finding that grape tannin may contain significant amount of S-glutathionylated (GSH-3MH) and S-cysteinylated (Cys-3MH) precursors of the varietal thiols 3-mercapto-1-hexanol and 3-mercaptohexyl acetate, characteristic of Sauvignon blanc wines, offers new opportunities for enhancing the tropical aroma in fermented beverages. In this study this new hypothesis was investigated: Müller T...

BACKGROUND This study aimed to test the beneficial effect of grape seed extract (GSE) (Vitis vinifera) and Vitamin C in oxidative stress and reperfusion injury induced by cardiopulmonary bypass (CPB) in coronary artery bypass surgery. PATIENTS AND METHODS In this randomized trial, 87 patients undergoing elective and isolated coronary bypass surgery included. The patients were randomly assigne...

Ionizing radiation (IR) has become an integral part of the modern medicine--both for diagnosis as well as therapy. However, normal tissues or even distant cells also suffer IR-induced free radical insult. It may be more damaging in longer term than direct radiation exposure. Antioxidants provide protection against IR-induced damage. Grapes are the richest source of antioxidants. Here, we assess...

Antifungal activity of Embelia ribes was evaluated on eight different fungal species by employing various concentrations of seed extract (0.5-2.0 mg). All the concentrations of seed extract inhibited the fungal growth, whereas maximum activity was observed at 2.0 mg concentration of seed extract. Among different doses, the diameter of inhibition zones ranged from 9 to 18 mm in various fungal sp...

several reports have shown the various effects of grape (vitis vinifera) seed extract such as antioxidant, hypotensive, hypolipidemic and vasodilatory effects. the aim of present study was to investigate the effect of grape leaf hydroalcoholic extract on isolated rat tracheal contractions induced by kcl and acetylcholine. the trachea was removed from male adult sprague-dawley rat and placed in ...

background fluoxetine (flx), a selective serotonin reuptake inhibitor, is widely used in the treatment of neurological disorders. however, its application carries the risk of adverse reactions, including reproductive toxicities. grape seed is highly regarded for its pharmacological activities, specifically its antioxidant properties. objectives this study was designed to evaluate whether hydroa...