CAJ | 학술논문

[目的]研究I-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02-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。
[목적]연구I-MCP、각취당처리대선절마령서저장기간활성양대사급보선효과적영향。[방법]설치1-MCP（2μl／L）、각취당（2％）급1-MCP연합각취당3개처리，이미가처리적선절마령서위대조，대선절마령서저장기간적상관지표진행측정。[결과]1-MCP처리능현저강저마령서호흡작용，유지교고적SOD、POD활성，감소료02-화H2O2급MDA재체내적적루，연완Vc함량적하강，억제PPO활성，표현출흔호적저장효과；각취당처리여1-MCP처리효과상반，단흔호지억제료선절마령서PPO활성；여대조상비，1-MCP연합각취당수유일정보선효과，단차이불명현。[결과]1-MCP처리선절마령서구유교호적보선효과。
[Objective] The research aimed to study the effects of 1-methylcyclopropene （1-MCP） and chitosan on active oxygen metabolism and quality of fresh-cut potato during storage. [Method] The fresh-cut potato slices were respectively treated with 1- MCP （2 μl/L）, chitosan or 1-MCP ＋ chitosan. During the storage period, the contents of superoxide anion （02）, malondialdehyde （MDA）, hydrogen dioxide （H202） and Vita- min C （Vc）, the activities of polyphenol oxidase （PPO）, peroxydase （POD） and super- oxide dismutase （SOD） as well as the respiratory rate of the fresh-cut potatoes in all the treatments were determined every day. The fresh-cut potato slices treated without any reagents were used as control. [Result] 1-MCP Treated could significantly de- creased the respiratory rate, PPO activity and the accumulations of 02 , H202 and MDA, increased the activities of SOD and POD and slowed down Vc content reduc- tion. On the contrary, potato treated with chitosan significantly inhibited the POD activi- ty in fresh-cut potato. Compared with the control, the combination of 1-MCP and chi- tosan showed a little but not significant better effects on potato preservation. [Conclu- sion] 1-MCP Treated showed the best effects on potato preservation.