二氧化碳高渗透性膜包装对冬枣贮藏品质的影响

Effects of Packaging with Film of High Carbon Dioxide Permeability on Storage Properties of Jujube Fruit

以二氧化碳高渗透性保鲜膜包装采后冬枣,以微孔保鲜膜作对照,研究了不同包装方式对冬枣保鲜袋内氧气和二氧化碳浓度、可溶性固形物(SSC)和维生素C(VC)含量、果肉乙醇和乙醛含量、果肉风味及好果率的影响。结果表明:2种包装袋内二氧化碳浓度相近,均低于0.5%的水平;微孔袋内氧气浓度接近于空气中氧含量,但二氧化碳高渗透性膜包装袋内氧气含量在3%～4%之间。二氧化碳高渗透性膜包装的冬枣可溶性固形物和维生素C含量高于微孔膜包装,但2种包装的冬枣的乙醇和乙醛含量相近。二氧化碳高渗透性膜包装的冬枣的风味和好果率明显高于微孔膜包装。

Film of high Carbon Dioxide permeability （FHCDP） was used, the effects of different packaging on the gas composition in headspace of packages were studied and the storage properties of jujube with micro-perforation film as control. The results showed that Carbon Dioxide contents in headspace of both packages were similar and lower than 0. 5 % during the whole storage period,while Oxygen content in headspace of micro-perforation film package was high （as high as in air）, and in headspace of FHCDP package, was in the range of 3 % ~4 %. Soluable solid content and vitamin C （VC） content of jujube packed with FHCDP were higher than packed with micro-perforation film, while ethanol and acet- aldehyde content were similar. Flavor and fine fruit percentage of jujube packed with FHCDP were higher than packed with micro-perforation film.