1-甲基环丙烯对岳冠苹果采后生理及抗氧化酶活性的影响  

Effects of 1-Methylcyclopropene on Postharvest Physiology and Activity of Antioxidative Enzyme of Yueguan Apple

作　　者：张佰清[1] 姜海峰[1] 魏宝东[1] 周爽[1] 郝义[2] 郭丹[2] 韩英群[2] 

机构地区：[1]沈阳农业大学食品学院,辽宁沈阳110866 [2]辽宁省果树科学研究所,辽宁营口115009

出　　处：《食品研究与开发》2016年第5期137-141,共5页Food Research and Development

基　　金：国家苹果产业技术体系晚熟育种岗位项目(CARS-28);辽宁省果树产业技术体系无公害贮藏及商品化处理技术岗位项目(LNGSCYTX-13/14-Ⅹ)

摘　　要：以优新品种"岳冠"苹果为试材,用不同浓度的1-甲基环丙烯(1-methylecyclopropene,1-MCP)处理采后果实,并用0.04 mm保鲜袋包装,低温(0±1)℃环境下贮藏,探究1-MCP处理对‘岳冠’苹果采后生理变化和抗氧化酶活性的影响。结果表明:与对照相比,1-MCP处理有效降低了呼吸强度和乙烯释放率,其中1.0、1.5和2.0μL/L 1-MCP处理的果实呼吸高峰和乙烯峰均延迟了15 d出现,1-MCP还增加了脯氨酸的积累,贮藏120 d时,处理组分别是对照的1.10、1.53、1.39倍和1.36倍,同时,1-MCP抑制了细胞膜相对电导率的升高,在贮藏后期,维持了果实较高的抗氧化酶(过氧化氢酶、过氧化物酶、超氧化物歧化酶)的活性,后3个处理活性高峰比对照分别晚15、15、30 d出现,从而延缓了果实衰老,综合各指标分析得出,用1.0μL/L的1-MCP处理岳冠苹果,其贮藏效果最好。The new variety of apple,Yueguan,was used as test material. The postharvest apples with the cling film of 0.04 mm thickness packaging were treated by 1-MCP with different concentrations and were stored at low temperature（0±1）℃. Effects of 1-MCP treatment on postharvest physiological changes and the activity of Antioxidative enzymes of Yueguan apple were investigated. The results showed that compared with the control fruit,1-MCP treatment had obvious effects for the fruit in lowering respiration rate and ethylene release. 1.0,1.5 μL/L and 2.0 μL/L treatment of all delayed the appearance of respiration peak and ethylene peak of fruit for15 d. Moreover,1-MCP also increased the accumulation of proline. At storage 120 d,the treated was respectively 1.10 times,1.53 times,1.39 times and 1.36 times than the controlled. 1-MCP inhibited the increase of cell membrane relative permeability,and maintained the higher activity of catalase,peroxidase and superoxide dismutase of the fruit during the late period of storage than those of the control fruit. The appearance of activity peak with the last three treatments was 15,15,30 d later than others. So,the process of fruit caducity was postponed.Comprehensive analysis of all the indexes showed that the storage effect of Yueguan apple with 1 μL/L 1-MCP treatment was the best.

关 键 词：岳冠苹果 1-甲基环丙烯 贮藏 生理 酶活性 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]