KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY (한국포장학회지)

Korea Society of Packaging Science and Technology (한국포장학회)
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A Study on the Antibacterial and Antifungal Properties of Zeolite/Zinc-polypeptide Coated Polypropylene Film

Zeolite/Zinc-polypeptide를 코팅한 폴리프로필렌필름의 항균 및 항진균 특성에 관한 연구

  • 이학래 (연세대학교 패키징학과) ;
  • 고의석 (연세대학교 패키징학과) ;
  • 심원철 (연세대학교 패키징학과) ;
  • 김종서 (연세대학교 패키징학과) ;
  • 김재능 (연세대학교 패키징학과)
  • Received : 2021.03.16
  • Accepted : 2021.04.26
  • Published : 2021.04.29
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Abstract

This study is for the application of functional antibacterial packaging to fresh food. Zeolite/Zinc-polypeptide was coated on PP film at concentrations of 5%, 10%, and 15%, degree of dispersion was verified through FESEM and FT-IR analysis. In addition, the antibacterial and antifungal properties of the films were analyzed according to the control group and the concentration of coating materials. As a result, the degree of dispersion of coating material was irregular but wide, depending on the concentration of Zeolite/Zinc-polypeptide on the surface of PP film. The antibacterial effect against E. coli was over 99.9%, and the growth of R. oryzae was inhibited about 70%. Therefore, it was confirmed that Zeolite/Zinc-polypeptide had antibacterial and antifungal properties against E. coli and R. oryzae even after coated on PP film. In conclusion, Zeolite/Zinc-polypeptide coating film is expected to be effective in preventing corruption and improving the shelf life of fresh food as a functional packaging material. In order to be applied to various fresh foods in the future, storage experiments are additionally required with temperature and humidity conditions according to fresh foods.

본 연구는 기능성 항균 포장재를 신선식품에 적용하기 위한 연구로서 Zeolite/Zinc-polypeptide를 식품용 포장재 중 하나인 PP 필름에 코팅하여 항균 및 항진균성을 확인하였다. 이를 검증하기 위하여 Zeolite/Zinc-polypeptide를 PP 필름에 각각 5%, 10%, 15% 농도로 코팅하였으며, FESEM과 FT-IR 분석을 통해 분산된 Zeolite/Zinc-polypeptide의 코팅 여부를 확인하였다. 또한 항균 효과를 검증하기 위하여 대조군과 코팅 물질의 농도에 따른 필름의 항균 및 항진균성을 분석하였다. 코팅 필름의 표면 분석 결과 PP 필름의 표면에서 Zeolite/Zinc-polypeptide의 농도에 따라 코팅 액의 분포 크기가 불규칙하지만 넓게 나타났다. 또한 항균 효과에 따른 분석 결과 박테리아 균 중 하나인 E. coli에서 99.9%의 항균 효과를 확인하였으며, R. oryzae의 성장을 약 70% 억제하여 PP 필름 코팅 적용 후에도 Zeolite/Zinc-polypeptide가 E. coli와 R. oryzae에 대하여 항균 및 항진균 특성을 갖고 있음을 확인하였다. 이에 따라 Zeolite/Zinc-polypeptide 코팅 필름은 기능성 포장재로서 신선식품의 부패 방지와 보관수명 향상에 효과적일 것으로 보이며, 향후 다양한 신선식품에 적용하기 위한 저장 실험이 요구되어진다.

Keywords

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