Effect of nanofilm and PVC film packaging on preservation of broccoli during the storage

To study the preservation of broccoli,the broccoli heads were packaged by 0.03 mm namofilm,PVC and0.04 mm PE film( CK) and the sensory quality,physiological and nutritional index during the ambient temperature storage were measured. The results showed that namofilm and PVC film both effectively delayed the decline of nutrient content,including appearance index,water,TSS,chlorophyll,V_C and soluble protein.The namofilm and PVC film packaging significantly suppressed the yellowing and accumulation of MDA content,and enhanced the POD and CAT activities. Therefore,the effect of broccoli preservation by namofilm and PVC film packaging was significant,the preservation of broccoli by PVC film packaging was better.