蓄冷箱包装在模拟冷链运输中对甜玉米品质的影响  

Effects of Cold Storage Insulation Packaging Box on the Quality of Sweet Corn in Simulated Cold Chain Transportation

作　　者：孙敏敏 郑淑芳[1] 王清[1] 王福东[3] 袁树枝 曹建康[2] SUN Minmin;ZHENG Shufang;WANG Qing;WANG Fudong;YUAN Shuzhi;CAO Jiankang(Institute of Agri-food Processing and Nutrition,Beijing Academy of Agriculture and Forestry Sciences,Key Laboratory of Vegetable Postharvest Processing of Ministry of Agriculture and Rural Areas,Beijing Key Laboratory of Fruits and Vegetable Storage and Processing,Beijing 100097,China;College of Food Science and Nutrition Engineering,China Agricultural University,Beijing 100083,China;Beijing Agricultural Technology Extension Station,Beijing 100029,China)

机构地区：[1]北京市农林科学院农产品加工与食品营养研究所,农业农村部蔬菜产后处理重点实验室,果蔬农产品保鲜与加工北京市重点实验室,北京100097 [2]中国农业大学食品科学与营养工程学院,北京100083 [3]北京市农业技术推广站,北京100029

出　　处：《食品工业科技》2024年第13期292-299,共8页Science and Technology of Food Industry

基　　金：北京市乡村振兴项目(20220511–02);现代农业产业技术体系“北京市设施蔬菜创新团队”项目(BAIC01–2023–22);财政部和农业农村部“国家现代农业产业技术体系”资助项目(CARS–23);北京市农林科学院青年科研基金(QNJJ202235)。

摘　　要：甜玉米采后生理代谢旺盛,极易老化,严重影响食用品质。为了明确采后蓄冷包装模拟冷链运输对甜玉米品质的影响,以‘金冠218’甜玉米为实验材料,以冷库贮藏(4℃)模拟冷藏车运输为对照,研究了蓄冷箱包装甜玉米在模拟冷链运输3 d及随后常温货架(20℃)贮藏1 d过程中的品质变化。结果表明:蓄冷箱包装的甜玉米中心最高温度3 d内不超过7℃,蓄冷保温效果良好。与对照相比,蓄冷箱包装模拟冷链运输可以很好地维持甜玉米冷链运输和货架期间的品质,延缓甜玉米苞叶颜色的变化,其中模拟冷链运输3 d后甜玉米的质量损失率降低了72.66%,可溶性固形物含量提高了4.97%,可溶性糖含量提高了10.13%;甜玉米的抗氧化酶除超氧化物歧化酶(superoxide dismutase,SOD)活性下降外,过氧化物酶(peroxidase,POD)、过氧化氢酶(catalase,CAT)、抗坏血酸过氧化物酶(ascorbate peroxidase,APX)活性比对照组有显著提高(P<0.05)。综上所述,利用蓄冷箱包装可以保持甜玉米冷链运输过程和货架期的品质,研究结果为甜玉米采后物流运输过程的蓄冷包装保鲜提供了技术依据。Sweet corn was highly susceptible to senescence due to its elevated physiological metabolism after harvest,resulting in a decline in its edible quality.The aim of this study was to assess the effects of a cold storage insulation packaging box on the quality attributes of postharvest sweet corn(cv.'Jinguan 218')during a simulated cold chain transportation period of 3 d and subsequent shelf life at room temperature(20℃)for 1 d.The control group involved cold storage at 4℃to mimic refrigerated truck transportation.The results showed that the internal temperature of sweet corn packed in the cold storage insulation packaging box remained below 7℃throughout the 3 d period.In comparison to the control group,the cold storage insulation packaging box effectively maintained the quality of sweet corn during cold chain transportation and shelf life,and delayed husk discoloration.The mass loss rate of sweet corn was reduced by 72.66%after 3 d of cold chain distribution using the packaging box,the soluble solid content was increased by 4.97%,and soluble sugar content was enhanced by 10.13%.Meanwhile,the activities of peroxidase(POD),catalase(CAT)and ascorbate peroxidase(APX)in sweet corn packaged with the cold storage insulation packaging box were significantly(P<0.05)higher than those in the control group,although the activity of superoxide dismutase(SOD)was inhibited by cold storage insulation packaging box.Therefore,the cold storage insulation packaging box demonstrated its ability to maintain the quality of sweet corn throughout cold chain logistics and shelf life.This work provides a technical basis for the preservation of sweet corn through cold storage packaging during post-harvest logistics and transportation.

关 键 词：甜玉米 蓄冷 质量损失 可溶性糖 抗氧化活性 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]