1 材料与方法
1.1 材料
1.2 方法
2 结果与分析
2.1 果皮O2-·产生速率和H2O2含量的变化
图1 壳聚糖处理对采后西番莲果实果皮O2-·产生速率和H2O2含量的影响*和**分别表示在同一贮藏时期,壳聚糖处理果实与对照果实之间的差异达显著(P<0.05)和极显著(P<0.01)水平。 Fig. 1 Effects of chitosan treatment on O2-· production rate and H2O2 content in pericarp of harvested passion fruit * and ** represented significant difference (P<0.05) and extremely difference (P<0.01), respectively between the 1∶200 (Vkadozan : Vkadozan + water) Kadozan (chitosan)-treated passion fruit and the control passion fruit on each storage day. |
2.2 果皮MDA含量的变化
图2 壳聚糖处理对采后西番莲果实果皮MDA含量的影响**表示在同一贮藏时期,壳聚糖处理果实与对照果实之间的差异达极显著(P<0.01)水平。 Fig. 2 Effects of chitosan treatment on MDA content in pericarp of harvested passion fruit ** represented extremely difference (P<0.01) between the 1∶200 (Vkadozan: Vkadozan + water) Kadozan (chitosan)-treated passion fruit and the control passion fruit on each storage day. |
2.3 果皮SOD、CAT、APX活性的变化
图3 壳聚糖处理对采后西番莲果实果皮SOD( A )、CAT(B)和APX(C)活性的影响**表示在同一贮藏时期,壳聚糖处理果实与对照果实之间的差异达极显著(P<0.01)水平。 Fig. 3 Effects of chitosan treatment on activities of SOD(A)、CAT (B)和APX (C) in pericarp of harvested passion fruit ** represented extremely difference (P<0.01) between the 1∶200 (Vkadozan: Vkadozan + water) Kadozan (chitosan)-treated passion fruit and the control passion fruit on each storage day. |
2.4 果皮AsA和GSH含量的变化
图4 壳聚糖处理对采后西番莲果实果皮AsA(A)和GSH(B)含量的影响**表示在同一贮藏时期,壳聚糖处理果实与对照果实之间的差异达极显著(P<0.01)水平。 Fig. 4 Effects of chitosan treatment on contents of AsA (A) and GSH (B) in pericarp of harvested passion fruit ** represented extremely difference (P<0.01) between the 1∶200 (Vkadozan: Vkadozan + water) Kadozan (chitosan)-treated passion fruit and the control passion fruit on each storage day. |
2.5 果皮DPPH自由基清除能力和还原力的变化
图5 壳聚糖处理对采后西番莲果实果皮DPPH清除能力(A)和还原力(B)的影响**表示在同一贮藏时期,壳聚糖处理果实与对照果实之间的差异达极显著(P<0.01)水平。 Fig. 5 Effects of chitosan treatment on DPPH radical scavenging ability (A) and reducing power (B) in pericarp of harvested passion fruit ** represented extremely difference (P<0.01) between the 1∶200 (Vkadozan: Vkadozan + water) Kadozan (chitosan)-treated passion fruit and the control passion fruit on each storage day. |
