Permeability and Solubility of d‐Limonene Vapor in Cereal Package Liners

Abstract

Studies were carried out on the solubility and permeability of limonene vapor in two cereal package liners. The effect of limonene partial pressure on the permeation rate and permeability coefficient was determined over a concentration range of 0.3 to 7 ppm (wt/v). The equilibrium sorption concentration and solubility coefficient of limonene in the liner films were also determined by a micro-balance gravimetric technique. Data obtained provided information necessary for the estimation of the storage quality of a packaged fruit-flavored cereal product whose quality is related to the retention of volatile aroma constituents within the package headspace.

Development of a system for measurement of permeability of aroma compounds through multilayer polymer films by coupling dynamic vapour sorption with purge‐and‐trap/fast gas chromatography

“…8,14 It was found that the P and D values determined in the present study were higher than those determined by other researchers (Table 4). This may be due to the fact that higher limonene vapour concentration (approximately 21 mg/ml at 25°C) was used in the present study compared with that used by the other research groups (1.5 mg/ml or 0.719 mg/ml).…”

“…In addition, lower permeant concentrations were used in the binary mixture studies, and it has been shown in the literature that permeant concentration has an effect on the permeation data determined. 8,11,15 Therefore, additional studies are required to verify these findings and elucidate the phenomena observed.…”

“…Furthermore, it has been reported that permeation rate tends to increase at higher permeant vapour concentration, due to polymer chain relaxation induced by the swelling and plasticizing effects caused by the permant molecules. 8,11,15 Considering this, the slightly higher P and D values determined here seem reasonable, but further studies Q. ZHOU, B. GUTHRIE AND K. R. CADWALLADER are needed to verify the permeant concentration effect.…”

“…3,9 The solubility coefficient S was calculated from the P and D values determined according to the relationship of P = D · S. 7,8 The average values of the mass transfer parameters determined for limonene through films A, B and C are shown in Table 3.…”

“…[3][4][5][6] When diffusion is Fickian and sorption follows Henry's law of solubility, their relationship can be expressed as: P = D · S. 7,8 Knowledge about these parameters is of practical use for selection of suitable packaging materials and prediction of product shelf-life. Mass transfer of inert gases and water vapour has been well investigated and standardized methods exist.…”