不同气调包装材料对红香酥梨贮藏品质的影响

Effect of different packaging materials on the storage quality of red fragrant pear

为了初步筛选红香酥梨的气调包装材料,本研究选用7种常见的塑料包装材料(CPP、LDPE、HDPE、PP6、PP12、OPP、PO)作为气调贮藏包装,分别进行N2、空气、真空处理,以敞口放置作为对照,进行红香酥梨的气调保鲜实验。红香酥梨气调包装后置于室温下进行贮藏,考察贮藏期间包装袋内气体含量、失重率、感官品质的变化,并将贮藏始末果实品质指标(果实硬度等)的变化进行对照。结果表明:气调包装材料种类及厚度对红香酥梨保鲜效果差异较大,PO、LDPE、CPP材料较适合于红香酥梨的气调保鲜,N2处理效果明显优于空气和真空处理。

Seven kinds of common plastics materials （CPP, LDPE, HDPE, PP6, PP12, OPP, PO ） as modified atmosphere packaging （MAP） were preliminarily studied to screen the suitable packaging materials for preservation of Red fragrant pear. These packages were filled with N2,air,vacuum,and the pears which exposed to ambient air were as the control. Red fragrant pears were stored at room temperature after MAP. These indexes such as,gas content,weight loss,sensory quality were detected during storage,and quality related indicators of Red fragrant pear were measured at the beginning and the end of storage. The results showed that there were quite different among the species and thickness of materials. Materials of PO,LDPE and CPP were more suitable for MAP of red fragrant pear,and the effects of N2 were significantly better than that of air and vacuum.