RT journal article
T1 Chemical modeling for pH prediction of acidified musts with gypsum and tartaric acid in warm regions
A1 Gómez Benítez, Juan
A1 Lasanta Melero, Cristina
A1 Palacios Santander, José María
A1 Cubillana Aguilera, Laura
A2 Ingeniería Química y Tecnología de Alimentos
A2 Química Analítica
K1 Acidification
K1 Gypsum
K1 Plastering
K1 Tartaric acid
K1 Musts
K1 Chemical modeling
K1 pH prediction
K1 Buffering power
AB Winemaking of musts acidified with up to 3 g/L of gypsum (CaSO4 2H2O) and tartaric acid, both individually and in combination, as well as a chemical modeling have been carried out to study the behaviour of these compounds as acidifiers. Prior to fermentation gypsum and tartaric acid reduce the pH by 0.12 and 0.17 pH units/g/L, respectively, but while gypsum does not increase the total acidity and reduces buffering power, tartaric acid shows the opposite behaviour. When these compounds were used in combination, the doses of tartaric acid necessary to reach a suitable pH were reduced. Calcium concentrations increase considerably in gypsum-acidified must, although they fell markedly after fermentation over time. Sulfate concentrations also increased, although with doses of 2 g/L they were lower than the maximum permitted level (2.5 g/L). Chemical modeling gave good results and the errors in pH predictions were less than 5% in almost all cases
PB ELSEVIER
YR 2015
FD 2015-01-01T00:00:00Z
LK http://hdl.handle.net/10498/17434
UL http://hdl.handle.net/10498/17434
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026