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The Oechsle scale is a hydrometer scale measuring the density of grape must, [1] which is an indication of grape ripeness and sugar content used in wine-making.It is named for Ferdinand Oechsle (1774–1852) and it is widely used in the German, Swiss and Luxembourgish wine-making industries.
For example, an 11.0% by mass D-Glucose ("grape sugar") solution measured 10.9 °Bx using a hand held instrument. [ citation needed ] For these reasons, the sugar content of a solution obtained by use of refractometry with the ICUMSA table is often reported as "Refractometric Dry Substance" (RDS), [ 9 ] which could be thought of as an ...
Yeast need a reliable source of nitrogen in forms that they can assimilate in order to successfully complete fermentation. Yeast assimilable nitrogen or YAN is the combination of free amino nitrogen (FAN), ammonia (NH 3) and ammonium (NH 4 +) that is available for a yeast, e.g. the wine yeast Saccharomyces cerevisiae, to use during fermentation.
The yield of grapes that will be harvested from a vineyard will depend on several factors including vintage conditions, local wine laws and winemaker's preference. In viticulture, the yield is a measure of the amount of grapes or wine that is produced per unit surface of vineyard, and is therefore a type of crop yield. Two different types of ...
These elongated seedless grapes, also called Sweet Sapphires, were bred by International Fruit Genetics, a California-based fruit breeding and patenting company, and launched in 2004.
The natural occurrence of fermentation means it was probably first observed long ago by humans. [3] The earliest uses of the word "fermentation" in relation to winemaking was in reference to the apparent "boiling" within the must that came from the anaerobic reaction of the yeast to the sugars in the grape juice and the release of carbon dioxide.
The grapes for their first vintage 2020 Frasca Nizza ($32) were grown in estate’s sustainably farmed, hill-top vineyard La Guaragna, producing a brilliantly red, medium-bodied Barbera with plum ...
Grapes may help your eyesight. Move over, carrots. ... It’s not the only study to show the correlation between improved mental health and exposure to blue spaces — a 2022 study, ...