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Development of the Functional Films Coated with Nano-TiO2 Particles for Food Packaging and Removal of Off-flavor from Soybean Sprouts

나노 TiO2를 적용한 식품 포장 필름 개발 및 콩나물의 이취 제거

  • 최연욱 (연세대학교 패키징학과) ;
  • 전규배 (연세대학교 패키징학과) ;
  • 송기현 (연세대학교 패키징학과) ;
  • 김재능 (연세대학교 패키징학과)
  • Received : 2015.06.23
  • Accepted : 2015.11.30
  • Published : 2015.12.31

Abstract

For testing the ultraviolet (UV)-blocking property of functional films coated with Nano-$TiO_2$ particles, UV-Vis spectra of oriented polypropylene (OPP) films uncoated and coated with $TiO_2$ of 3% and 5% in Polyurethane (PU) and polyvinyl butyral (PVB)-Cellulose binders were measured. The result of UV-Vis analyses showed that the film coated with 5% $TiO_2$ in PVB binders had a significant effect on UV protection of 90% compared with the film uncoated. Also The result of The photodegradation of methylene blue (MB), OPP films coated with 5% in both PU and PVB binders had a high photocatalytic activity for MB degradation. To evaluate the effect of the developed functional film coated with Nano-$TiO_2$ particles, fresh soybean sprouts were used. Nano-$TiO_2$ coated film was observed to decompose the off-flavor produced by soybean sprouts within packages during distribution, but uncoated film did not. Therefore, Nano-$TiO_2$ coated film package could give the greatest effect in extending the shelf life of soybean sprouts.

Keywords

nano-$TiO_2$;soybean sprouts;oriented polypropylene-film;off-flavor

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