Vapor pressure and vaporization enthalpy studies of the major components of ginger, α-zingiberene, β-sesquiphellandrene and (−) ar curcumene by correlation gas chromatography

The vaporization enthalpies and vapor pressures of three major components in ginger, α-zingiberene, β-sesquiphellandrene, and (−) ar-curcumene are evaluated by correlation gas chromatography using two set of standards, n-alkanes and a series of cyclic and polycyclic hydrocarbons. Vaporization enthalpies are reproduced by both sets of standards. Vapor pressures as a function of temperature are fit to a second order polynomial and the results...