Abstract
To show the effect of organic acid composition on pH and titratable acidity (TA), an algorithm was derived using the dissociation constants of the acids determined in 0%, 10%, and 20% (v/v) ethanol solutions and the solubility product of potassium bitartrate. Using published solubility products for potassium bitartrate solutions and assuming a 0.15% concentration for succinic acid, the effect of variation of the concentration of malic or lactic acid on TA and tartrate and K+ content in ethanol/ water solutions at different pH values could be calculated with the formulas and computer. Tables were constructed showing the predicted malic or lactic acid content in ethanol/water solutions at a particular TA and pH.
- Received July 1988.
- Copyright 1989 by the American Society for Enology and Viticulture
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Vol 40 Issue 2
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