纳米二氧化硅改性LDPE膜对贡柑贮藏品质的影响

Effect of Nano-SiO_2 Modified LDPE Film on Postharvest quality of Gonggan

为了探索纳米二氧化硅改性低密度聚乙烯薄膜(LDPE)对贡柑的保鲜效果,分别研究了未包装、常规LDPE膜包装和纳米二氧化硅改性LDPE膜包装三种贮藏方式对贡柑采后贮藏品质的影响。结果表明:两种包装材料均能改善贡柑的贮藏品质,其中纳米二氧化硅改性LDPE膜能够更好地延缓贡柑采后失重率、腐烂率的上升和硬度的下降,更好地抑制丙二醛的积累,贮藏后期保持较高的可溶性固形物和可滴定酸含量,并能较好地维持果实抗氧化性能和感官满意度。

In order to study the effect of nano-SiO_2 modified low density polyethylene（LDPE）film on Gonggan storage,the influences of unpacked, LDPE film and nano-SiO_2 LDPE film packaging treatments on postharvest quality of Gonggan were investigated.The results showed that both of the packing materials could improve the postharvest quality of Gonggan,and nano-SiO_2 LDPE film was better in slowing down the increase of the decay rate and weight loss ratio,and the decrease of firmness.Moreover,the nano-SiO_2 LDPE film was found to be better in inhibited the accumulation of malonaldehyde（MDA）,and maintained higher content of total-soluble solids（TSS）and titratable acid（TA）content at the later period of storage.Furthermore,maintaining higher antioxidant capacity and hedonic scale of Gonggan fruits were also confirmed.