Novel test approach for evaluating and modelling barrier properties of food contact materials against mineral oil contaminants

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2 Citations (Scopus)

Abstract

A method for testing the mineral oil barrier properties of packaging materials has been developed as a response for the concerns on contamination of food by mineral oil compounds. The aim was to provide an efficient tool to evaluate packaging materials with respect to this. The method is a modification of the so-called cup test using model compounds comparable with mineral oil components with different length and configuration of the hydrocarbon chain. The model compounds are introduced in the gas phase as penetrants. The absorbed amounts, which have migrated through the barrier, are analysed from a food simulant or powdered sugar. The method has been validated for coated and non-coated boards. Compared with folding boxboard without polymer coating, polyethylene terephthalate-coated board reduces the amount of the C16 compound in food simulant after 7-day tests by a factor of 30. An extended migration model describing sorption mechanisms to both food simulant and fibres in the packing material has been developed. The model simulations for folding boxboard indicate that fibres absorb a significant proportion of the compounds when molecular weight increases. This retards the migration significantly compared with the speed expected by diffusion mechanism only.
Original languageEnglish
Pages (from-to)571-583
JournalPackaging Technology and Science
Volume29
Issue number11
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Mineral Oil
Mineral oils
Impurities
Packaging materials
Polyethylene Terephthalates
Fibers
Hydrocarbons
Sugars
Polyethylene terephthalates
Sorption
Polymers
Contamination
Gases
Molecular weight
Coatings
Testing

Keywords

  • barrier
  • migration
  • mineral oil
  • model
  • packaging material

Cite this

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title = "Novel test approach for evaluating and modelling barrier properties of food contact materials against mineral oil contaminants",
abstract = "A method for testing the mineral oil barrier properties of packaging materials has been developed as a response for the concerns on contamination of food by mineral oil compounds. The aim was to provide an efficient tool to evaluate packaging materials with respect to this. The method is a modification of the so-called cup test using model compounds comparable with mineral oil components with different length and configuration of the hydrocarbon chain. The model compounds are introduced in the gas phase as penetrants. The absorbed amounts, which have migrated through the barrier, are analysed from a food simulant or powdered sugar. The method has been validated for coated and non-coated boards. Compared with folding boxboard without polymer coating, polyethylene terephthalate-coated board reduces the amount of the C16 compound in food simulant after 7-day tests by a factor of 30. An extended migration model describing sorption mechanisms to both food simulant and fibres in the packing material has been developed. The model simulations for folding boxboard indicate that fibres absorb a significant proportion of the compounds when molecular weight increases. This retards the migration significantly compared with the speed expected by diffusion mechanism only.",
keywords = "barrier, migration, mineral oil, model, packaging material",
author = "Christiane Laine and Marja Pitk{\"a}nen and Taina Ohra-aho and Marie Gestranius and Ketoja, {Jukka A.}",
note = "SDA: SHP: Bioeconomy Project code: 101397",
year = "2016",
doi = "10.1002/pts.2239",
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T1 - Novel test approach for evaluating and modelling barrier properties of food contact materials against mineral oil contaminants

AU - Laine, Christiane

AU - Pitkänen, Marja

AU - Ohra-aho, Taina

AU - Gestranius, Marie

AU - Ketoja, Jukka A.

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N2 - A method for testing the mineral oil barrier properties of packaging materials has been developed as a response for the concerns on contamination of food by mineral oil compounds. The aim was to provide an efficient tool to evaluate packaging materials with respect to this. The method is a modification of the so-called cup test using model compounds comparable with mineral oil components with different length and configuration of the hydrocarbon chain. The model compounds are introduced in the gas phase as penetrants. The absorbed amounts, which have migrated through the barrier, are analysed from a food simulant or powdered sugar. The method has been validated for coated and non-coated boards. Compared with folding boxboard without polymer coating, polyethylene terephthalate-coated board reduces the amount of the C16 compound in food simulant after 7-day tests by a factor of 30. An extended migration model describing sorption mechanisms to both food simulant and fibres in the packing material has been developed. The model simulations for folding boxboard indicate that fibres absorb a significant proportion of the compounds when molecular weight increases. This retards the migration significantly compared with the speed expected by diffusion mechanism only.

AB - A method for testing the mineral oil barrier properties of packaging materials has been developed as a response for the concerns on contamination of food by mineral oil compounds. The aim was to provide an efficient tool to evaluate packaging materials with respect to this. The method is a modification of the so-called cup test using model compounds comparable with mineral oil components with different length and configuration of the hydrocarbon chain. The model compounds are introduced in the gas phase as penetrants. The absorbed amounts, which have migrated through the barrier, are analysed from a food simulant or powdered sugar. The method has been validated for coated and non-coated boards. Compared with folding boxboard without polymer coating, polyethylene terephthalate-coated board reduces the amount of the C16 compound in food simulant after 7-day tests by a factor of 30. An extended migration model describing sorption mechanisms to both food simulant and fibres in the packing material has been developed. The model simulations for folding boxboard indicate that fibres absorb a significant proportion of the compounds when molecular weight increases. This retards the migration significantly compared with the speed expected by diffusion mechanism only.

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KW - mineral oil

KW - model

KW - packaging material

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