PBAT/PLA复合膜结合1-MCP处理对金玉兰菜保鲜效果的影响  

Effect of PBAT/PLA Film Combined with 1-MCP on Preservation of Chicory

作　　者：程赤云 张娜 朱喜成 阎瑞香 CHENG Chi-yun;ZHANG Na;ZHU Xi-cheng;YAN Rui-xiang(College of Light Industry Science and Engineering,Tianjin University of Science&Technology,Tianjin 300222,China;National Engineering and Technology Research Center for Preservation of Agricultural Products,Tianjin 300112,China)

机构地区：[1]天津科技大学轻工科学与工程学院,天津300222 [2]国家农产品保鲜工程技术研究中心,天津300112

出　　处：《食品研究与开发》2023年第6期21-29,共9页Food Research and Development

基　　金：天津市科技支撑重点项目(20YFZCSN00620);现代农业产业技术体系项目(ITTVRS2021020)。

摘　　要：为研究金玉兰菜新型可降解保鲜包装及保鲜新技术,以聚苯乙烯(expanded polystyrene,EPS)泡沫箱包装作为对照,采用聚己二酸/对苯二甲酸丁二醇酯/聚乳酸[poly(butyleneadipate-co-terephthalate)/polylactic acid,PBAT/PLA]复合膜包装结合1.0μL/L 1-甲基环丙烯(1-methylcyclopropene,1-MCP)对金玉兰菜进行处理,分析测定贮藏期间[(4.0±0.5)℃],金玉兰菜呼吸强度、色差、总酚含量、多酚氧化酶活性、营养物质含量等指标的变化。结果表明,采用PBAT/PLA复合膜包装的金玉兰菜在贮藏24 d后,硬度仍保持了1.98 kg/cm^(2),感官评分平均值维持在3.425,高于对照组(1.15);PBAT/PLA+1-MCP能够延迟呼吸高峰的出现时间,并降低呼吸峰值10.72 mg CO_(2)/(kg·h),褐变指数较未添加1-MCP的处理组降低了2.3~5.7,有效抑制了营养物质的损耗。PBAT/PLA复合膜结合1-MCP处理能够有效提高金玉兰菜冷藏过程中的品质,在拓宽可降解包装材料在农产品保鲜中的应用及提高金玉兰菜保鲜技术水平方面具有潜在应用前景。This study investigated the new biodegradable preservation packaging and technology for chicory.Specifically,with expanded polystyrene(EPS)box as control,poly(butyleneadipate-co-terephthalate)/polylactic acid(PBAT/PLA) film and 1-methylcyclopropene(1-MCP)were used to preserve chicory.The respiratory intensity,color difference,total phenols content,polyphenol oxidase activity,and nutrient content of chicory during the storage [(4.0±0.5)℃] were determined and analyzed.The results showed that the firmness of chicory wrapped with PBAT/PLA remained at 1.98 kg/cm^(2) after 24 days of storage,and the average sensory score was 3.425,1.15 higher than that of the control group.PBAT/PLA + 1-MCP treatment delayed the peaking of respiratory intensity,reduced the peak by 10.72 mg CO_2/(kg·h),and decreased browning index by 2.3-5.7 compared with the treatment without 1-MCP,which effectively restrained the loss of nutrients.The combination of PBAT/PLA film and 1-MCP can effectively improve the quality of chicory during cold storage.It can help expand the application of biodegradable packaging materials in agricultural preservation and improving chicory preservation technology.

关 键 词：聚己二酸/对苯二甲酸丁二醇酯/聚乳酸复合膜 1-甲基环丙烯 金玉兰菜 保鲜 可降解包装材料 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]