Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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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
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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.

이 연구에서는 식품포장분야에 사용되는 유연포장재들의 두께에 따른 방충효과를 규명하여 각각의 포장재에서 일정 수준의 방충효과를 나타내기 위한 필름의 최적의 조건을 연구하고자 하였다. 식품용 유연포장재들 중에서도 가장 널리 이용되고 있는 PE, PP, PS, AF, PET를 채택하여 실험을 진행한 결과, 각 포장재들의 두께에 따른 화랑곡나방 유충에 의한 침투율은 전반적으로 필름의 종류에 관계없이 두께가 얇을수록 포장재 내부로 빠르게 침투하는 경향을 보였다. 특히 PP와 PS의 경우 다른 필름들과는 다르게 각각 $20{\mu}m$와 $30{\mu}m$에서 72시간 이내에 100% 침투되는 결과값을 보여 방충포장소재로서의 상대적인 취약함을 보였다. 결과적으로 필름의 종류에 상관없이 두께가 증가할 수록 화랑곡 나방 유충의 침투율이 낮아진다는 것을 보여 주었다. 따라서 식품 내 해충과 같은 동물성 이물의 혼입을 방지하기 위해서는 포장 소재의 종류에 따라 특정 두께 이상을 확보해야 한다고 판단된다.

Keywords

References

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