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Comparative Sorption of Aroma Compounds by Polyethylene and lonomer Food‐Contact Plastics
Author(s) -
KWAPONG O. Y.,
HOTCHKISS J. H.
Publication year - 1987
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1987.tb06721.x
Subject(s) - sorption , citral , limonene , aroma , low density polyethylene , ethyl butyrate , chemistry , orange (colour) , partition coefficient , chromatography , organic chemistry , polyethylene , food science , essential oil , adsorption
Sorption of aroma by three common food packaging plastics in an aqueous system was investigated. All plastics, (LDPE and 2 ionom‐ers), exhibited similar sorption behavior. Equilibrium partition coefficients (K e ), ranged between 2 and 38 for benzaldehyde, citral and ethyl butyrate. A K e of 3.4 × 10 3 for limonene indicated a strong affinity for the plastic phases. An equation was derived using K e to predict the extent of sorption from a given aroma‐plastic system. Sorption isotherms were measured at three temperatures for limonene in a model system. A comparison of limonene sorption alone and from orange oil, showed similar patterns, with a lower K e for orange oil. Triangle test results indicated that the sorption was detectable to the human senses.