Visualization of tocopherol acetate absorbed inside laminated films by a matrix-assisted laser desorption/ionization-imaging mass spectrometry

Mitsuru Tanaka, Eiji Tanaka, Noe Obinata, Toshiro Matsui

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The aim of this study was to visualize the sorption of tocopherol acetate as a penetrant into polymer films. A matrix-assisted laser desorption/ionization-imaging mass spectrometry (MALDI-IMS) technique was used to visualize the distribution of tocopherol acetate in films during the migration process. A phytic acid-aided MALDIIMS using 2',4',6'-trihydroxyacetophenone as a matrix allowed us to successfully visualize the absorbed tocopherol acetate in both ethylene-vinyl acetate copolymer (EVA) and low-density polyethylene (LDPE) films after 1 weekstorage of tocopherol acetate at 40°C. The IMS technique allowed us to also visualize the actual distribution of tocopherol acetate inside the EVA/barrier/EVA laminated films, in which tocopherol acetate sorption was blocked at the barrier layer.

Original languageEnglish
Pages (from-to)821-826
Number of pages6
JournalFood Science and Technology Research
Volume21
Issue number6
DOIs
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Marketing

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