TY - JOUR T1 - Factors Affecting Induced Calcium Tartrate Precipitation from Wine JF - American Journal of Enology and Viticulture JO - Am J Enol Vitic. SP - 155 LP - 161 DO - 10.5344/ajev.1988.39.2.155 VL - 39 IS - 2 AU - John P. Clark AU - Kenneth C. Fugelsang AU - Barry H. Gump Y1 - 1988/01/01 UR - http://www.ajevonline.org/content/39/2/155.abstract N2 - The rate of calcium tartrate precipitation was measured in wine after addition of calcium carbonate. Wine pH has little, if any, effect on the rate of precipitation, only on the final equilibrium concentration. Low temperatures slow the rate of precipitation but result in greater calcium tartrate stability. Addition of calcium tartrate seed crystals increases the rate of precipitation. Malic acid inhibits calcium tartrate precipitation during the period when nucleation controls crystal growth. Measurement of tartaric acid and calcium during precipitation shows the stoichiometry to be 1:1 during all phases of crystallization. ER -