仿生纳米复合膜透CO_2性能及应用研究

Research of the CO_2 Permeability and Application of the Bionic-chitosan Nanometer Composite Membrane

优化仿生纳米复合膜透CO2性,并将其应用于草莓保鲜实验。结果表明,仿生纳米复合膜最佳配方为:壳聚糖含量2 g,纳米SiO2含量0.07 g,冰乙酸含量1.4 mL,且透CO2量达到最低为0.0909 g/d;优化膜处理的草莓低温4℃下贮藏11天后,腐烂指数比空白组降低了23.9%。这证明,优化膜处理可有效延长草莓低温下的贮藏保鲜时间。

The bionic-chitosan nanometer composite membrane was optimized about CO2 permeability, and the optimized composite membrane was applied in fresh-keeping strawberries. The results shows that the best formula of the bionic-chitosan nanometer composite membrane is 2 g for chitosan content, 0.07 g for nano-TiO2, content, 1.4 mL for glacial acetic acid content, and the CO2 coefficient of optimized membrane permeability is 0.0909 g/d. Strawberries of coating the optimized membrane were stored up eleven days at low temperature 4 ℃, decay index of strawberries of coating optimized membrane than decay index of strawberries of uncoated membrane is decreased 23.9 %.The result prove that the storage period of strawberries were prolonged at low temperature by coating optimized membrane.