高岭土-PE复合膜袋包装常温保鲜三华李

Room temperature preservation of Sanhua plum by kaolin-PE composite membrane bags

采用自制聚乙烯(PE)薄膜袋和3种质量比均为5%、10%、15%的煅烧4μm目高岭土-PE复合膜袋及6250目高岭土-PE复合膜袋对三华李进行包装常温保鲜研究,同时做空白对照试验,根据贮藏期间三华李的好果率、失重率、硬度、Vc含量及可溶性固形物含量等指标的变化情况,评定膜袋的保鲜效果。结果表明,5%6250目K-PE和15%4μm K-PE 2种复合膜袋包装对三华李有良好的保鲜效果,可显著减缓三华李果失重率的上升,硬度、Vc含量、好果率的下降及可溶性固形物含量的变化,可以将三华李的贮藏期从13 d延长至22 d。

Sanhua plum was preserved at room temperature by homemade polyethylene（PE） membrane bags, three quality percentage of 5%, 10%, 15% calcination 4 μm mesh kaolin-PE composite membrane bags and 6250 mesh kaolin-PE composite membrane bags, respectively. Blank contrast experiments were conducted at the same time. The effects of Sanhua plum preservation by different membrane bags were assessed according to the change of the good fruit rate and chemical indicators in the weightlessness rate, hardness, Vc content and soluble solids content during the period of storage. The results showed that two kinds of composite membrane bags of 5% 6250 mesh K-PE and 15% 4 μm K-PE had better Sanhua plum preservation effects, which could effectively slow down the rising of the weightlessness rate, and the decline of hardness, Vc and good fruit rate and soluble solids content diversification of Sanhua plum, which could prolong the storage period of Sanhua plum from 13 to 22 d.