草莓气调保鲜研究

目的]寻求一种适宜的草莓保鲜模式。方法]选择新鲜饱满、大小一致、无病虫害的草莓果实为试材,分别置于PVA和PE 2组保鲜袋中,挽口形成自发气调模式,每组分别设冷藏(10±2)℃、添加蚕茧保鲜剂、添加"绿达"牌果蔬保鲜生理调节剂3个处理,以常温为对照,比较各种处理对草莓的保鲜效果。结果]草莓的气调保鲜袋保藏、添加保鲜剂气调保鲜袋保藏、气调保鲜袋冷藏效果优于常温及PE保鲜袋保藏。与PE保鲜袋相比,PVA气调保鲜袋对草莓的保鲜效果非常明显,保鲜期延长了5 d以上。冷藏处理结合PVA保鲜袋可大大减少水分散失,延长草莓果实的保鲜时间。保鲜剂结合PVA保鲜袋可明显减缓草莓果实中可滴定酸含量的下降,具有显著的保鲜效果。结论]该研究为草莓贮藏保鲜提供了技术参考。

Studies on Strawberry Preservation by Controlled Atmosphere

Objective] The study aimed to seek for a suitable mode for the strawberry preservation.Method] In the test,the strawberry fruit with the fresh and full fruit,same size,no diseases and pests were selected as the tested material,they were put in 2 groups of PVA and PE preservation bags which were tipped up as to form the spontaneously the controlled atmosphere(CA) mode.and 3 treatments of the refrigeration(10 ± 2) ℃,adding cocoon preservative and adding Lvdai brand of fresh-keeping physiological regulator were set up for each group,with the normal temperature storage as the CK,to compare the fresh-keeping effects on the strawberry by the each treatment.Result] The strawberry storage with the CA fresh-keeping bags,adding preservative in the CA fresh-keeping bags and the refrigerated storage with the CA bags were better than the storage with CK or with PE fresh-keeping bags.Compared with the PE fresh-keeping bag,the PVA CA fresh-keeping bags had obvious fresh-keeping effect on the strawberry and made the fresh-keeping period being prolonged by above 5 d.The refrigeration treatment combined with the PVA fresh-keeping bag could greatly reduce the water loss and delay the fresh-keeping time for the strawberry fruits.The preservative combined with the PVA fresh-keeping bags delayed the titratable acidity in the strawberry fruits,showing the significant fresh-keeping effect on the strawberry.Conclusion] The study provided the technique reference for the storage and preservation of the strawberry.