Changes in selected wine physical properties during the short-time storage
Hlavac P, Bozikova M, Hlavacova, Z et al.
This article is focused on the effect of temperature and short-term storage on the physical properties of wine made in Slovakia. All measurements were performed during temperature manipulation in the temperature interval approximately from 0 deg C to 30 deg C. Two series of rheologic and thermal parameters measurements and one of electric parameter were done. First measurement was done at the beginning of storage and then the same sample was measured after a short storage. Temperature relations of rheologic parameters and electric conductivity were characterized by exponential functions, which is in good agreement with the Arrhenius equation. In case of thermal parameters linear relations were obtained. The graphical dependency of wine density on temperature was described by decreasing polynomial function. The temperature dependencies of dynamic and kinematic viscosity have a decreasing character. The fluidity, thermal conductivity, thermal diffusivity, and electrical conductivity increased with the temperature. It was found out that short-term storage had a small effect on measured properties but longer storage could have a more significant influence on selected properties.
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