摘要
[目的]研究1-MCP、壳聚糖处理对鲜切马铃薯贮藏期间活性氧代谢及保鲜效果的影响。[方法]设置1-MCP(2μl/L)、壳聚糖(2%)及1-MCP联合壳聚糖3个处理,以未加处理的鲜切马铃薯为对照,对鲜切马铃薯贮藏期间的相关指标进行测定。[结果]1-MCP处理能显著降低马铃薯呼吸作用,维持较高的SOD、POD活性,减少了O2-.和H2O2及MDA在体内的积累,延缓VC含量的下降,抑制PPO活性,表现出很好的贮藏效果;壳聚糖处理与1-MCP处理效果相反,但很好地抑制了鲜切马铃薯PPO活性;与对照相比,1-MCP联合壳聚糖虽有一定保鲜效果,但差异不明显。[结果]1-MCP处理鲜切马铃薯具有较好的保鲜效果。
[ Objective] The research aimed to study the effects of 1-methylcyclopropene （1-MCP） and chitosan on active oxygen metabolism and storage quality of fresh-cnt potato during storage. [ Method ] 1 -MCP, chitosan, 1 -MCP and chitosan combination were set in this experiment to determine relevin indicetors. The fresh-cut potato without any reagent was used as control （CK）. [ Results] 1-MCP treatment could decrease the respiration rate and PPO activity,increase the activity of SOD and POD, delay the decrease the Vc content, and then exhibited excellent storage quality during storage. Comparison to 1-MCP treatment, ehitosan had adverse effects on the active activity, Vc content and respiration rate, with the exception of PPO activity. Chitosan could intensively inhibit the PPO activity of fresh-cut potato. Comparison with CK,1-MCP and chitosan combination treatment had no significant effects on the active oxygen and quality of flesh-cut potato. [ Conclusion] 1-MCP treatments had the best preservation effect.
出处
《安徽农业科学》
CAS
北大核心
2011年第32期20199-20201,20209,共4页
Journal of Anhui Agricultural Sciences
关键词
马铃薯
鲜切
1-MCP
壳聚糖
活性氧
保鲜
Potato
Fresh-cut
1-methylcyclopropene
Chitosan
Active oxygen
Storage
