The effect of sample preparation on measures of in vitro digestibility was studied using leaves of Calliandra calothyrsus. They were chopped fresh (FrCh), chopped and oven-dried at 658C (ChOD), chopped and freeze-dried (ChFD), oven-dried and ground (ODGr) or freeze-dried and ground (FDGr). Samples were analysed for in vitro dry matter and nitrogen digestibility with or without PEG addition to b...

The aim of this study was to monitor the mycobiota of wine grapes, occurrence of ochratoxigenic microfungi in wine grapes and occurrence of ochratoxin A and Alternaria mycotoxins in fresh grape juice, must and wine from domestic crops in the year 2004. Thirteen samples of wine grapes (white /nine samples/ and red /four samples/) were collected during harvesting in the Znojmo wine region, SE Mor...

The hepatoprotective activity of red grape seed extracts (GSEs) was investigated against ethanol-induced cytotoxicity. In this study, liver slice culture model was used to demonstrate hepatoprotective activity of two GSEs (water and ethanol) in vitro. The hepatoprotective activity was evaluated by measuring the levels of lipid peroxidation, protein carbonyls, lactate dehydrogenase (LDH) leakage...

Muscadine grape skin extract (MSKE) is derived from muscadine grape (Vitis rotundifolia), a common red grape used to produce red wine. Endoplasmic reticulum (ER) stress activates the unfolded protein response (UPR) that serves as a survival mechanism to relieve ER stress and restore ER homeostasis. However, when persistent, ER stress can alter the cytoprotective functions of the UPR to promote ...

Polyhydroxyalkanoates (PHA) are biodegradable bioplastics of interest as potential substitutes petroleum-derived plastics that can be produced starting from lignocellulosic-derived residues. This study presents the combined solid-state enzymatic hydrolysis (SSEH) and fermentation (SSF) a sustainable approach for obtaining PHA using leftovers brewer's spent grain (BSG), grape pomace (GP) olive-m...

Noble rot results from exceptional infections of ripe grape (Vitis vinifera) berries by Botrytis cinerea. Unlike bunch rot, noble rot promotes favorable changes in grape berries and the accumulation of secondary metabolites that enhance wine grape composition. Noble rot-infected berries of cv Sémillon, a white-skinned variety, were collected over 3 years from a commercial vineyard at the same t...

Anthocyanins are important compounds for red grape and red wine quality, and can be influenced by supply of nutrients such as nitrogen, phosphorus, potassium, zinc, and iron. The present work aims to gain a better understanding of the effect of iron supply on anthocyanins concentration in grape berries. To this end, own-rooted four-year-old Cabernet Sauvignon grapevines (Vitis vinifera) were fe...

14 15 16 The impact of using Trepat and Monastrell red grape varieties during the manufacture 17 of rosé sparkling Cava wines on the nitrogen and volatile composition compared to a 18 white Cava manufactured with a blend of typical white grape varieties (Xarello: 19 Macabeo: Parellada) has been investigated. The wines were industrially manufactured 20 in a cellar, and the concentrations of outs...

A rapid, sensitive, and selective analysis method using ultra high performance liquid chromatography coupled with triple-quadrupole mass spectrometry (UHPLC-QqQ-MS) has been developed for the characterization and quantification of grape skin flavan-3-ols after acid-catalysed depolymerization in the presence of phloroglucinol (phloroglucinolysis). The compound detection being based on specific M...