Abstract:Nano-TiO2 modified low density polyethylene (LDPE) film packaging was prepared by blending LDPE with nano-TiO2. The effects of LDPE film and nano-TiO2 LDPE film packaging on quality of strawberry were investigated at 4 ℃ for 14 days. Results showed that compared with the control (LDPE ?lm), nano-TiO2 LDPE packaging significantly decreased the decay rate, weight loss and ethylene production of strawberry and also inhibited the reduction of firmness and titratable acid content. Additionally, nano-TiO2 LDPE packaging could keep ascorbic acid and total phenols contents, as well as antioxidant ability, at relatively higher level during the later storage period. At the 14th day, the decay rate and ethylene production of strawberry packaged with nano-TiO2 LDPE film were 60.72% and 40.32%, respectively, lower than those of the control. The firmness and the contents of titratable acid, ascorbic acid and total phenolic of the packaged strawberry were 24.34%, 9.02%, 29.22% and 10.73%, respectively, higher than those of the control. These results indicated that nano-TiO2 LDPE film packaging could provide a potential alternative for maintaining quality and prolonging storage life of strawberry.
