CO_2高透性“富士”苹果保鲜膜的研制与应用

Development and Application of CO_2 High-Permeability Preservation Film for ‘Fuji' Apple

以低密度聚乙烯为主料,添加轻质碳酸钙、重质碳酸钙、大豆油等功能性辅料,自制CO2高透性保鲜膜,利用该保鲜膜对"富士"苹果进行自发气调贮藏,通过测定保鲜袋内气体成分变化、果实硬度、褐变指数、乙醇含量等指标,观察该保鲜膜对"富士"苹果的贮藏效果。结果表明:3种功能性辅料的添加总量为10%时,生产的保鲜膜性能达到"富士"苹果贮藏要求,可显著降低微环境中CO2浓度,保持果实的硬度、降低褐变指数和减少乙醇的积累,维持较好的果实品质。

Taking LDPE as material that adding hght calcmm carbonate, heavy calcmm carbonate, soyoean oil ana omer functional additives,high CO2 permeability preservation film was made. Using modified atmosphere package for ＇Fuji＇ apple,fruit firmness, browning index, ethanol content were delermined, the preservation effect was investigated by determination the gas composition change in package. The results showed that when the proportion of three functional additives was 10 %, the performance of film was better. The film that was used for ＇ Fuji＇ apple preservation, significantly reduced the concentration of C（）2 ,kept the fruit firmness, reduced the browning index and the accumulation of ethanol, maintained good fruit quality.