Quantitative Study on Aroma Barrier of “Polyglycolic Acid （PGA）” as New High Barrier Material

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  • 新規バリア材ポリグリコール酸フィルムの香気バリア性に関する研究
  • シンキ バリアザイ ポリグリコールサン フィルム ノ コウキ バリアセイ ニ カンスル ケンキュウ

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Quantitative evaluation of the aroma barrier of plastic materials was very important for designing the packages of aroma-sensitive contents. The aroma permeability testing was designed with a diffusion cell and dynamic headspace analysis with GC/MS of the lower permeant concentration side of the cell. Cyclohexane, 2-propanol and ethyl acetate with high saturation vapor pressures were used as the permeants analogous to the aroma components such as limonene, 1-butanol and ethyl butyrate respectively. The aroma permeability was measured of the film samples of PGA, PET, NyMXD6 and EVOH. The result showed PGA provided the lowest permeability of all the 3 permeants under both conditions of 0% RH and 100% RH, which fact suggested that PGA is a most suitable barrier material for packaging of aroma-sensitive products.

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