Freebase(0.00 / 0 votes)Rate this definition: In Australian aboriginal mythology, Wala is a sun goddess who lived with her sister, Bara, and her sister-in-law, Madalait. Bara accompanied her across the sun every day, but Wala realized she made the earth too hot and made her stop. She journeyed to the southern mountains and brought back the sun.
Generally, the lower the pH, the higher the acidity in the wine. However, there is no direct connection between total acidity and pH (it is possible to find wines with a high pH for wine and high acidity).
In hotter climates, vines use tartaric acid for respiration, decreasing the total acidity in the grapes. However, the decrease in tartaric acid is not as profound as the decrease in malic acid through the same process. This is one of the mechanisms that winemakers use to control the acid content in their wine.The total acidity in a wine is measured by the amount of Tartaric Acid present.Tartaric Acid plays a critical role in the taste, feel and color of a wine. But even more important, it lowers the pH enough to kill undesirable bacteria, acting as a preservative.he influence of tartaric acid on the taste and feel of a wine is primarily through its impact on acidity. It contributes to the âtartnessâ of a wine, but not as much as malic and citric acid. Winemakers will adjust acidity by adding tartaric acid to the wine.