Performance of TiO2 powder coated packaging film in ethylene removal
C. Chawengkijwanich, Y. Hayata
ISHS Acta Horticulturae 804:541-546. 2008.
2008
บทคัดย่อ
TiO2 powder-coated packaging film using nanoparticle and microparticle TiO2 were manually prepared on oriented polypropylene film (OPP) by printing method. The film had a slightly white appearance, and TiO2 powders were distributed on the surface of OPP film. Nanoparticle TiO2 powder-coated packaging film showed good photocatalytic activity for the decomposition of ethylene, a primary contaminant in horticultural packaging. Photocatalytic activity for the decomposition of ethylene was decreased when TiO2 particles size was increased. Microparticle TiO2 powder-coated film showed a slightly decomposition of ethylene as compared to nanoparticle TiO2. When applied nanoparticle TiO2-coated packaging film as an ethylene removal packaging, ethylene concentration inside a TiO2-coated packaging film bag of tomato fruits was 70-80% lower than that in an uncoated plastic film bag. This study demonstrates the possibility to apply the TiO2-coated film to quality management as an ethylene removal packaging.