RT journal article
T1 Formation of siliceous sediments in brandy after diatomite filtration
A1 Gómez Benítez, Juan
A1 Gil Montero, María Luisa Almoraima
A1 Rosa Fox, Nicolás Daniel de la
A1 Alguacil, Marcos
A2 Ingeniería Química y Tecnología de Alimentos
A2 Química Física
A2 Física de la Materia Condensada
K1 Sediment
K1 Brandy
K1 Silica
K1 Diatomite
K1 Filtration
AB Brandy is quite a stable spirit but sometimes light sediment appears. This sediment was separated and analysed by IR and SEM-EDX. It was revealed that the sediment is composed mostly of silica and residual organic matter. Silica was present as an amorphous phase and as microparticles. In an attempt to reproduce the formation of the sediment, a diatomite extract was prepared with an ethanol/water mixture (36% vol.) and a calcined diatomite similar to that used in brandy filtration. This extract was added to unfiltered brandy in different amounts. After 1 month, the Si concentration decreased in all samples and sediments with similar compositions and features to those found in the unstable brandy appeared.The amounts of sediment obtained were directly related to the decrease in Si concentration in solution. Consequently, it can be concluded that siliceous sediment in brandy originates from Si released during diatomite filtration.
PB ELSEVIER
YR 2015
FD 2015-01-01T00:00:00Z
LK http://hdl.handle.net/10498/17432
UL http://hdl.handle.net/10498/17432
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026