壳聚糖处理对节瓜室温贮藏品质及酶活性的影响  

Effects of Chitosan Treatment on Storage Quality and Enzyme Activity of Chieh-qua at Room Temperature

作　　者：方宇鹏[1,2] 徐洪武 姜法祥[3] FANG Yupeng;XU Hongwu;JIANG Faxiang(Department of Gardens,Chizhou Vocational and Technical College,Chizhou,Anhui 247000;Chizhou Institute of Landscape Science and Technology Application,Chizhou,Anhui 247000;Yantai Academy of Agricultural Science,Yantai,Shandong 264000)

机构地区：[1]池州职业技术学院园林系,安徽池州247000 [2]池州市园林科技应用研究所,安徽池州247000 [3]山东省烟台市农业科学研究院,山东烟台264000

出　　处：《北方园艺》2024年第12期87-94,共8页Northern Horticulture

基　　金：安徽省高校自然科学研究重点资助项目(KJ2020A1009);安徽省高校优秀青年人才支持计划一般资助项目(gxyqZD2019224)。

摘　　要：以节瓜为试材,采用不同浓度(0.5%、1.0%和1.5%)壳聚糖涂膜处理节瓜3 min,以不作任何处理为对照,每隔15 d测定节瓜室温贮藏期间感官评价、失重率、维生素C、可溶性固形物、可溶性糖、可溶性蛋白质、丙二醛含量及过氧化氢酶(CAT)、过氧化物酶(POD)和多酚氧化酶(PPO)活性的变化,研究了壳聚糖处理对节瓜室温贮藏期间品质及酶活性的影响,以期为节瓜室温贮藏提供参考依据。结果表明:与对照相比,不同浓度壳聚糖处理均能延缓节瓜品质的下降。其中,1.0%壳聚糖处理能显著减少失重率,抑制维生素C、可溶性固形物、可溶性糖及可溶性蛋白质下降,显著降低丙二醛(MDA)含量和PPO活性,提高POD、CAT活性。综上,壳聚糖处理能维持节瓜室温贮藏期间品质,延长节瓜室温贮藏时间,以1.0%壳聚糖处理效果最佳。Taking chieh-qua as the test material,different concentrations(0.5%,1.0%and 1.5%)of chitosan were used to coat chieh-qua for 3 minutes,and no treatment was used as control.Sensory evaluation,weight loss rate,vitamin C,soluble solids,soluble sugars,soluble proteins,malondialdehyde contents,and activities of catalase,peroxidase,and polyphenol oxidase(PPO)were measured at 15-day intervals during storage at room temperature.The effects of chitosan treatment on quality and enzyme activity of chieh-qua during storage at room temperature were studied,in order to provide reference for the storage at room temperture of chieh-qua.The results showed that the quality of chieh-qua could be delayed by different concentration of chitosan.Among them,1.0%chitosan could significantly reduce the weight loss rate,inhibit the decrease of vitamin C,soluble solids,soluble sugar and soluble protein,and significantly reduce the content of MDA and PPO activity,improve the activity of POD and CAT.In summary,chitosan treatment could maintain the quality of chieh-qua during room temperature storage and prolong its storage time.The best treatment effect was 1.0%chitosan.

关 键 词：节瓜 壳聚糖 室温 品质 酶活性 

分 类 号：S642.3[农业科学—蔬菜学]