包装袋对‘国光’苹果自发气调后货架期质地和品质的影响

Effects of packaging bags on the shelf life texture and quality of’Ralls’apple after modified atmosphere

为筛选出‘国光’苹果自发气调贮藏最适厚度的包装袋,分别选用厚度为30μm的聚氯乙烯(PVC)和厚度为20、40、60、80μm的聚乙烯(PE)包装袋,以厚度为20μm的聚乙烯袋挽口包装为对照,在(0±1)℃条件下贮藏,210 d后取出,置于常温(20℃)环境中,放置1、3、6 d,调查果肉褐变指数,测定果实质地(果肉硬度、破裂力、破裂功、屈服力、果肉做功、破裂位移和屈服位移等)和品质等指标。结果表明,厚度为20、40μm的PE袋最适宜作为‘国光’自发气调贮藏的包装袋,厚度为30μm的PVC袋不适宜。

In order to screen out the optimal thickness of the packaging bags for the modified atmosphere storage of’Ralls’apple,the packaging is made of polyvinyl chloride(PVC)with a thickness of 30μm and polyethylene(PE)with a thickness of 20,40,60,80μm.The bag with a polyethylene bag with a thickness of 20μm as a control,is stored at(0±1)℃,taken out after 210 d,and placed in a normal temperature(20℃)environment for 1,3,6 d,respectively.The browning index,texture(pulp firmness,rupture force,rupture work,yield force,pulp work,rupture displacement and yield displacement)and quality of the fruit were measured.The results show that PE bags with a thickness of 20,40μm are most suitable as the packaging bags for’Ralls’modified atmosphere storage,while PVC bag with a thickness of 30μm is not suitable.