David A. Meneses, Arturo Bejarano, J. D. L. Fuente
Jul 1, 2014
Citations
0
Influential Citations
9
Citations
Journal
The Journal of Chemical Thermodynamics
Abstract
Abstract The saturated vapor pressures of pure ethyl-2-methylbutyrate, hexanal and ( E )-2-hexenal, which are volatile compounds characteristic of apple aroma, were measured with a dynamic recirculation apparatus at a pressure range of (24.5 to 190.0) kPa. Measurements were made over the temperature range of (362.1 to 429.9) K for ethyl-2-methylbutyrate, (358.1 to 425.8) K for hexanal, and (373.5 to 446.2) K for ( E )-2-hexenal. The maximum likelihood method was used to estimate the parameters of the Antoine equation, whereas the parameters of an extended Antoine equation and the Wagner equation were determined by non linear least square method. The three models showed root mean square deviations ( rmsd ) of 0.29%, 0.28%, and 0.27% for ethyl-2-methylbutyrate, 0.58%, 0.48%, and 0.38% for hexanal, and 0.89%, 0.62% and 0.36% for ( E )-2-hexenal, respectively. Additionally, the experimental data and correlation were compared with those available in the literature.