KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY (한국포장학회지)

Korea Society of Packaging Science and Technology (한국포장학회)
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Effect of Food Simulants on the Properties of LDPE-Nano TiO2 Composite Film in Food Contact Environment

식품 접촉 모사 환경에서 식품유사용매의 LDPE-나노 TiO2 복합필름 재질특성 영향 평가

  • Lee, Wooseok (Department of Packaging, Yonsei University) ;
  • Choi, Jae Chun (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation) ;
  • Park, Se-jong (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation) ;
  • Kim, MeeKyung (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation) ;
  • Ko, Seonghyuk (Department of Packaging, Yonsei University)
  • 이우석 (연세대학교 패키징학과) ;
  • 최재천 (식품의약품안전평가원 첨가물포장과) ;
  • 박세종 (식품의약품안전평가원 첨가물포장과) ;
  • 김미경 (식품의약품안전평가원 첨가물포장과) ;
  • 고성혁 (연세대학교 패키징학과)
  • Received : 2017.07.27
  • Accepted : 2017.11.22
  • Published : 2017.12.31
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Abstract

The effect of food simulants on properties and light barrier function of LDPE-nano $TiO_2$ composite film has been investigated. LDPE-nano $TiO_2$ composite films were prepared with 5.0wt% $TiO_2$ content by melt-extrusion. To simulate food contact environment, according to KFDA standards and specifications for food utensils, containers and packages, food simulants were selected with deionized water, 50% ethanol, 4% acetic acid and n-heptane and composite films were immersed in each food simulant at $70^{\circ}C$, 30 min except n-heptane ($25^{\circ}C$, 60 min). A variety of material properties, including crystallinity, chemical bonds, surface morphology, mechanical, oxygen barrier and optical properties, of LDPE-nano $TiO_2$ composite film were examined with and without the food simulants treatment. As a result, under regulated migration condition, LDPE-nano $TiO_2$ composite showed extremely stable in all properties tested in the study in contact with food simulants indicating that $TiO_2$ nanoparticles are physicochemically stable and quite compatible with LDPE. Results enable us to anticipate migration of $TiO_2$ will probably not occur. To evaluate influence of migration of $TiO_2$ on food stuffs, their color, pH and acidity were observed as well.

Keywords

References

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