Aeration is the purposeful and controlled exprosure of a substance to air, and especially to its reactive component: oxygen.
In order to prevent oxidation and the potential overproduction of acetic acid, the aeration of wine during winemaking must be carefully monitored.
The city of Adelaide is the capital city of South Australia region, the state’s largest city and the fifth-most populous city in Australia.
The Adelaide wine region can be sub-divided into 3 areas: the Adelaide Plains, the Adelaide Zone, and, the most famous of all, the Adelaide Hills…
Acidity is a general term for the fresh, tart or sour taste produced by the natural organic acids present in a wine. It is generally considered that wines owe their attractive qualities to a proper balance between this acidic character and the sweet and bitter sensations of other components.
All wines have some level of acidity, which is typically perceived on the human palate by a prickling sensation on the sides of the tongue.
The ‘Acidification’ is a winemaking process consisting in increasing the acidity in a grape must or wine. It is a legal and common practice in warm wine regions where grapes tend to loose acidity quickly in before harvesting (while cool wine region tend to enrich and/or chaptalize must or wine to compensate for the lack of grapes’ maturity)…
The Acetobacter is a genus within the family of Acetic Acid Bacteria (AAB) known for being capable of spoiling wine by converting it ultimately into vinegar. They are present on all grapes, but they are more common on grapes that have rot.
Acetobacter can survive only thanks to the presence of oxygen and is also one of the very few groups of bacteria which can live in the high-acid (low pH) environment of wine (together with the lactic acid bacteria).
The Acetic Acid is a simple two-carbon fatty acid and one of the more common organic chemicals encountered in foods, it is also the most prevalent of the volatile acids. This is a naturally occurring organic acid that makes up the majority of a wine’s volatile acidity…
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