Influence of Antibacterial Packaging on Shelf Life of Fresh Grape
Grey moulds caused by Botrytis cinerea are the main problem for grape in the storage time. Fungicidetreatment is proved to be necessary to retard the growth of mould spores and delay spoilage. One effectivefungicide widely used in grape preservation is sulfur dioxide (SO2). A kind of antimicrobial packagingfor controlled release of SO2 was developed in this paper. This mixed matrix film with three-layer structurecan release SO2 gas into package, and the release amount of SO2 can be controlled by adjusting inner layer.The effect of the application of this controlled release packaging in Kyoho grape preservation has been studied.The result showed that it can continuously release a lower level (10~40 ppm) of SO2 for about 50 days.Compared with the control group, this controlled release packaging can well maintain the freshness and firmnessof grape, and it also can decrease the content of soluble solids and organic acids. Furthermore, it loweredrotting rate and shattering rate of the experimental grape during storage. It was found after analysis that thebetter preservation was obtained when the proportion of EVA resin in EVA/LDPE blend ingredients is between5% ~16%. This active antimicrobial packaging is considered as a effective replacement of traditionalSO2 fumigation method for grape preservation
Wen-Cai Xu Dong-Li Li
Beijing Key Laboratory of Printing & Packaging Materials and Technology Beijing Institute of Graphic Communication Beijing, China
国际会议
The 17th IAPRI World Conference on Packaging(第17届世界包装大会)
天津
英文
172-176
2010-10-12（万方平台首次上网日期，不代表论文的发表时间）