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Effects of Type and Thickness of Flexible Packaging Films on Perforation by Plodia interpuntella

유연포장 필름의 종류 및 두께에 따른 화랑곡나방 침투율 연구

  • Lee, Soo Hyun (Department of Food Bioscience and Technology, Korea University) ;
  • Kwon, Sang-Jo (Department of Food Bioscience and Technology, Korea University) ;
  • Lee, Sang Eun (Department of Food Bioscience and Technology, Korea University) ;
  • Kim, Jeong-Heon (Department of Food Bioscience and Technology, Korea University) ;
  • Lee, Jung-Soo (Department of Food Bioscience and Technology, Korea University) ;
  • Na, Ja Hyun (Institute of Life Science and Natural Resources, Korea University) ;
  • Han, Jaejoon (Department of Food Bioscience and Technology, Korea University)
  • 이수현 (고려대학교 생명과학대학 식품공학과) ;
  • 권상조 (고려대학교 생명과학대학 식품공학과) ;
  • 이상은 (고려대학교 생명과학대학 식품공학과) ;
  • 김정헌 (고려대학교 생명과학대학 식품공학과) ;
  • 이정수 (고려대학교 생명과학대학 식품공학과) ;
  • 나자현 (고려대학교 생명자원연구소) ;
  • 한재준 (고려대학교 생명과학대학 식품공학과)
  • Received : 2014.08.13
  • Accepted : 2014.10.13
  • Published : 2014.12.31

Abstract

This study investigated the effect of perforation by the Indian meal moth (Plodia interpunctella) larvae on various flexible food-packaging films, in relation to their thickness and type. Among the various flexible packaging films, polyethylene (PE), aluminum foil (AF), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET) were selected for this study due to their wide usage in food packaging. Based on their thickness, film penetration by P. interpunctella larvae was measured as in following order: PP, $20{\mu}m$; AF, $9{\mu}m$; PET, $12{\mu}m$; PP, $30{\mu}m$; PS, $30{\mu}m$; PE, $40{\mu}m$; PE, $35{\mu}m$; PS, $60{\mu}m$; and PET, $16{\mu}m$. P. interpunctella larvae rapidly penetrated through the packaging films regardless of their thickness and type. In particular, it was observed that PP of $20{\mu}m$ and PS of $30{\mu}m$ were completely penetrated by P. interpunctella larvae within 72 h, rendering thin PP and PS films less valuable as anti-insect packaging films. Our results show that the perforations by P. interpunctella larvae were observed in the thin films. These results imply that each packaging film has a marginal thickness against the perforations by P. interpunctella larvae.

Keywords

Indian meal moth;flexible packaging film;perforation;penetration

Acknowledgement

Supported by : 농촌진흥청

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