1-MCP协同活性炭处理抑制鲜切胡萝卜木质化形成研究  

Study of Inhibition of Lignification Formation of Fresh-cut Carrots by 1-MCP Combined with Activated Carbon Treatment

作　　者：汤尧[1] 李朝哲 刘春雨 李学进 罗生虎 沈建铎 刘媛媛[1] 马洁[2] 韩泽云 TANG Yao;LI Chaozhe;LIU Chunyu;LI Xuejin;LUO Shenghu;SHEN Jianduo;LIU Yuanyuan;MA Jie;HAN Zeyun(College of Food Science and Engineering,Tianjin University of Science and Technology,State Key Laboratory of Food Nutrition and Safety,Tianjin 300457 China;Tianjin Centers for Disease Control and Prevention,Tianjin 300011 China;Turpan Grape Industry Development Promotion Center,Turpan 838000 China)

机构地区：[1]天津科技大学食品科学与工程学院,食品营养与安全国家重点实验室,天津300457 [2]天津市疾病预防控制中心,天津300011 [3]吐鲁番市葡萄产业发展促进中心,新疆吐鲁番838000

出　　处：《西华大学学报（自然科学版）》2024年第4期44-52,共9页Journal of Xihua University:Natural Science Edition

基　　金：国家卫健委食品安全风险评估重点实验室开放课题(2018K01-20171211);新疆维吾尔自治区“天池英才”计划。

摘　　要：鲜切胡萝卜在贮藏过程易发生木质化,导致品质下降。为探究1-MCP协同活性炭处理对鲜切胡萝卜木质化抑制保鲜效果,文章分析了乙烯利、活性炭、1-MCP和1-MCP协同活性炭等4种处理方式对鲜切胡萝卜硬度、总酚、抗氧化性、PPO、POD、PAL和木质素含量的影响。结果表明:1-MCP协同活性炭处理显著延缓了胡萝卜硬度下降;在贮藏第10 d总酚含量达0.20 mg GAE·g^(−1),显著高于其他处理组(P<0.05);抗氧化性也保持最高水平;DPPH自由基清除活性为0.90μmol TE·g^(−1);PPO、POD活性分别为0.23 U·g^(−1)和61.08 U·g^(−1),显著低于对照组(P<0.05);PAL活性和木质素含量分别为81.67 U·g^(−1)和65.88 mg·g^(−1),也显著低于对照组(P<0.05)。可见,1-MCP协同活性炭处理可有效抑制鲜切胡萝卜木质化,提升其贮藏品质。Lignification is one of the main reasons for the quality deterioration of fresh-cut carrots during storage.In this study,the anti-lignification effectiveness of ethylene,activated carbon,1-MCP,and 1-MCP combined with activated carbon for fresh-cut carrots was explored by evaluations on the firmness,total phenol content(TPC),lignin content,antioxidant activity,and the activities of polyphenol oxidase(PPO),peroxidase(POD),and phenylalanine ammonia-lyase(PAL).The results showed that 1-MCP combined with activated carbon significantly slowed the decline in firmness of fresh-cut carrots.The TPC reached 0.20 mg GAE·g^(−1)on day 10,significantly higher than in other treatment groups(P<0.05).The antioxidant activity remained at the highest level,with DPPH free radical scavenging activity of 0.90μmol TE·g^(−1).The combined treatment group had significantly lower PPO(0.23 U·g^(−1))and POD(61.08 U·g^(−1))activities,as well as lower PAL activity(81.67 U·g^(−1))and lignin content(65.88 mg·g^(−1))compared to the control group(P<0.05).Results suggested that 1-MCP combined with activated carbon treatment effect-ively inhibited lignification and improved the storage quality of fresh-cut carrots.

关 键 词：1-MCP 活性炭 DPPH 酶活 木质化 鲜切胡萝卜 

分 类 号：S631.2[农业科学—蔬菜学]