薄膜包装和乙烯吸收剂对黑宝石李贮藏品质和褐变的影响

Effects of Film Package and Ethylene Absorbent on Storage Quality and Browning of ‘Black Diamond’ Plums

研究冷藏(0℃)及货架(20℃3 d)条件下塑料薄膜包装及包装+乙烯吸收剂处理对黑宝石李贮藏品质及褐变生理的影响。试验结果表明,与不包装(CK)相比,采用PVC(30μm厚)薄膜包装和包装+乙烯吸收剂处理能有效抑制李果实的软化,减缓可溶性固形物(TSS)和花青苷含量的上升,抑制可滴定酸(TA)含量的下降,降低腐烂指数;包装内加入乙烯吸收剂,能有效降低贮藏环境中的O2浓度,提高CO2浓度,减少乙烯生成;两处理均可降低果实酚含量,抑制多酚氧化酶(PPO)和过氧化物酶(POD)活性,从而抑制果肉褐变。薄膜包装+乙烯吸收剂的保鲜效果明显优于不加乙烯吸收剂的处理。

The influence of film package and ethylene absorbent on storage quality and browning of ＇Black Diamond＇ plums was investigated during cold-storage（0 ℃） and shelf-storage（20 ℃ 3d） period.The result showed that in contrast with non-package（CK） the treatments of 30 μm PVC film package and package＋ethylene absorbent could inhibit fruit softening and increase of TSS and anthocyanin content,delay decrease of titrable acid（TA） content,and reduce decay ratio of plums.The treatment of package＋ethylene absorbent could obviously decreased O2 concentration,increased CO2 concentration and decreased C2H4 concentration inside package.Two treatments were decreased phenol content in fruit,and inhibited PPO and POD activity,and markedly inhibited flesh browning.The fresh-keeping effect of package＋ ethylene absorbent was better than non-ethylene absorbent.