纳米保鲜包装对柑橘果实贮藏品质的影响

Effect of nanocomposite-based packaging on the postharvest quality of citrus fruit

摘要: 在前期预实验的基础上,制备含有1%纳米抗菌剂的纳米保鲜包装袋,并分析其物理性能;同时,以"宫川"柑橘为实验对象,研究该纳米包装对柑橘采后贮藏品质的影响及其对人工接种真菌(Penicillium digitatum)病害的影响。结果表明,1%纳米抗菌剂的纳米保鲜包装袋可以降低透氧率和透湿率、提高撕裂强度,对保鲜有利;虽然该纳米材料包装对柑橘果实贮期颜色没有产生显著影响,但是显著的抑制柑橘果实硬度和可滴定酸的下降和失重率的上升,减缓柑橘人工接种病害的发生及发展,降低采后损失。

Abstract: Based on the pre- test results, LDPE bags contained 1% inorganic antimicrobial agent ( the main component of the nano- Ag, nano- Zn and kaolin) was suitable for the package of citrus fruit. The physical properties of the bag were analyzed.Meanwhile, the changes of quality and artificial inoculated disease on citrus fruit were studied.The results showed that the oxygen permeability and water vapor transmission rate of the nano- packaging material were reduced, and the tear strength was increased.The nano packaging could not influence the color of fruits, however, it could significantly inhibited the declining of fruit firmness and titratable acid and the increasing of weight loss, reduced the development of the artificial disease and postharvest loss.