Riesling grapes are naturally very high in acid, and the cool, northern climate of Germany means this ripping acid stays in the grapes even into the fall harvest season. So winemakers let the fermentations stop before the wine is completely dry, retaining a little sweetness in order to strike balance in the wine.
Oxygenation refers to the process of adding oxygen to the body system. There is no way to reliably measure arterial oxygenation via clinical signs alone. Cyanosis, pallor and other physical findings are not reliable.
by www.SixWise.com. Hydrogenation is a chemical reaction -- widely used in the processing of cooking oils and fats -- that turns unsaturated fatty acids into saturated ones. Technically speaking, during this process unsaturated bonds between carbon atoms are reduced by attaching a hydrogen atom to each carbon.