两亲性碳纳米管构筑活性保鲜膜对蓝莓货架期品质的影响  

Effects of amphiphilic carbon nanotube constructed active cling film on blueberry shelf life quality

作　　者：祖晶莹 李宛凝 乔晶 姜晋 孙健 赵艳 潘鹏远 朴振铭 刘秀奇[1] ZU Jingying;LI Wanning;QIAO Jing;JIANG Jin;SUN Jian;ZHAO Yan;PAN Pengyuan;PIAO Zhenming;LIU Xiuqi(College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China;Jilin Product Quality Supervision and Inspection Institute,Changchun 130103,China)

机构地区：[1]吉林农业大学食品科学与工程学院,长春130118 [2]吉林省产品质量监督检验院,长春130103

出　　处：《农业工程学报》2025年第7期277-286,共10页Transactions of the Chinese Society of Agricultural Engineering

基　　金：吉林省科技发展计划重点研究项目(20210203040SF)。

摘　　要：针对多壁碳纳米管(multi-walled carbon nanotubes, MWCNTs)固有疏水性制约其在食品包装应用的问题,该研究采用物理吸附-化学接枝协同改性法构建两亲性(hydroxypropyl methylcellulose/acid catalyzed oxidation-multi-walled carbon nanotubes, HPMC/AO-MWCNTs)复合体系,实现纳米材料在食品级高分子基体(derivative ternary tissue, DTT)表面的可控负载。制备出两亲性多壁碳纳米管基活性保鲜膜(hydroxypropyl hethylcellulose-carbon nanotube-based selfassembled layer-active packaging film, HM-CSA-AP),在3层组装时展现出最优性能:拉伸强度达68.44 MPa,较DTT层提升27.85%;阻氧率提高62%,水蒸气透过率下降64%,形成致密“迷宫效应”阻隔层。HM-CSA-AP中大肠杆菌和酵母菌菌落数与DTT相比,分别下降61.44%、64.37%,源于HPMC/AO-MWCNTs释放与物理穿刺的协同作用。在蓝莓保鲜试验中,HM-CSA-AP展现出卓越的货架品质维持能力:25℃储藏12 d后,果实硬度保持在3.86 N,为空白对照组的2倍左右;丙二醛含量(20.46 mmol/g)显著低于空白对照组(51.34 mmol/g)(P<0.05);维生素C含量(47.47 mg/100 g)为空白对照组的3倍左右。其保鲜机制包括:高阻氧特性抑制呼吸代谢,低透湿性延缓果胶酶活性,以及纳米管负载抗氧化剂的协同抑菌作用。该研究所构建的HM-CSA-AP体系在阻氧性和透湿特性方面协同优化,为环境友好型活性食品包装材料的开发提供了创新解决方案,在浆果类生鲜储运领域具有重要应用价值。Multi-walled carbon nanotubes(MWCNTs)have restricted their application in food packaging,due mainly to the inherent hydrophobicity.In this study,a synergistic physical adsorption-chemical grafting modification was proposed to construct an amphiphilic HPMC/AO-MWCNTs(hydroxypropyl methylcellulose/hydropropropropyl methylcellulose)composite.Acid-Catalyzed Oxidation-MWCNTs composite system was obtained to realize the controlled loading of nanomaterials on the surface of a food-grade DTT(derivative ternary tissue)matrix.The amphiphilic HM-CSA-AP(hydroxypropyl methylcellulose-carbon nanotube-based self-assembled layer-active packaging film)was prepared after modification.The results show that the optimal performance was achieved when assembled in 3 layers.Among them,the tensile strength reached 68.44 MPa,which was 27.85%higher than that of the DTT layer;The oxygen barrier rate increased by 62%,whereas,the transmission rate of water vapor decreased by 64%,which was 55.10%higher than that of PE(polyethylene)film and 25.11%lower than that of PVDC(polyvinylidene chloride)film.Compared with the PVDC membrane,the oxygen barrier rate increased by 56.25%,whereas,the transmission rate of water vapor decreased by 22.83%.A dense barrier layer was formed with the labyrinth effect.The number of E.coli,S.aureus,yeast,and mold colonies decreased by 61.44%,50.72%,64.37%,and 52.90%,respectively,in the HM-CSA-AP at the number of the self-assembled layers of 3,compared with the DTT;The number of colonies decreased by 53%to 64%,and 54%to 65%,respectively,compared with the PE and PVDC film.The decrease was attributed to the synergistic effect of physical puncture from the HPMC/AO-MWCNTs release.The blueberry preservation experiment showed that the HM-CSA-AP shared excellent shelf quality:The weight loss rate of blueberries increased most slowly after 12 d of storage at 25℃,with the maximum weight loss rate of only 1.17%;The spoilage rate was 15.44%,which was significantly lower than that of the blank control group at the 8th day(22.17%,w

关 键 词：两亲性多壁碳纳米管 活性保鲜膜 蓝莓 保鲜 货架品质 

分 类 号：TB332[一般工业技术—材料科学与工程]