双斑东方鲀在冷藏保鲜过程中的水分迁移与品质变化  

Water Migration and Quality Changes of Takifugu bimaculatus during Cold Storage

作　　者：贾哲 陈晓婷[2] 蔡水淋[2] 潘南[2] 张怡[1] 刘智禹[2] JIA Zhe;CHEN Xiaoting;CAI Shuilin;PAN Nan;ZHANG Yi;LIU Zheyu(College of Food Science and Technology,Fujian Agriculture and Forestry University,Fuzhou 350000,China;Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province,National Research and Development Center for Marine Fish Processing(Xiamen),Fisheries Research Institute of Fujian,Xiamen 361100,China)

机构地区：[1]福建农林大学食品科学学院,福建福州350000 [2]福建省水产研究所,国家海水鱼类加工技术研发分中心(厦门),福建省海洋生物增养殖与高值化利用重点实验室,福建厦门361100

出　　处：《食品工业科技》2021年第10期287-294,共8页Science and Technology of Food Industry

基　　金：福建省种业创新与产业化工程项目(2017FJSCZY03);福建省海洋渔业结构调整专项(2017HTJG07)。

摘　　要：为研究双斑东方鲀在冷藏过程中水分变化和品质劣变之间的相关性,本实验以新鲜双斑东方鲀为研究对象,将其分别置于4、0℃下贮藏11 d,隔天进行物理(剪切力、咀嚼性、色差值、持水性、低场核磁T2弛豫时间)、化学(pH、挥发性盐基氮值、鲜度K值)和微生物指标(菌落总数)的测定,并运用低场核磁共振技术(LF-NMR)结合主成分分析评估其货架期。结果表明,随着冷藏时间的延长,4、0℃组鱼肉的剪切力、咀嚼性、L~*值、持水性、T_(21)(结合水)和T_(23)(自由水)含量均呈下降趋势;pH、菌落总数(TVC)、挥发性盐基氮值(TVB-N)和鲜度(K值)则不断增加;相关性分析结果显示:T_(21)和T_(23)含量与pH、TVC、TVB-N和K值呈极显著负相关(P<0.01),T_(22)与TVC和K值显著相关(P<0.05);主成分分析(principal components analysis,PCA)分析结果显示,双斑东方鲀在0、4℃条件下分别于第5和第7 d开始发生腐败变质,与理化指标的分析结果一致。综上,通过LF-NMR结合PCA分析可以更直观的分析双斑东方鲀冷藏过程中的水分分布与其品质之间的相关性,可较好区分不同贮藏期间双斑东方鲀水分及品质变化情况,因此,可考虑运用LF-NMR结合PCA分析技术快速检测双斑东方鲀在冷藏期间品质及新鲜度变化。In order to study the correlation between moisture changes and quality deterioration of Fugu bimaculatus during cold storage,this experiment took fresh Fugu bimaculatusas as the research object and stored them at 4 and 0℃for 11 d.Physics(shear force,chewiness,color difference value,water holding capacity,low-field nuclear magnetic T2 relaxation time),chemistry(pH,volatile base nitrogen value,K value),and microbiological indicators are measured every other day,then the shelf life was evaluated by low field nuclear magnetic resonance(LF-NMR)combined with principal component analysis.The measurement results showed that the contents of shear force,chewability,L*value,water holding capacity,T21 and T23 of fish meat in 4 and 0℃groups decreased with the extension of refrigeration time.The values of pH,TVC,TVB-N and K increased continuously.It was obvious that T21 and T23 were significantly positively correlated with water holding capacity,chewiness and shear force during storage at 4 and 0℃(P<0.01),which were extremely significantly correlated with pH,TVC,TVB-N and K values negative correlation(P<0.01).T22 was significantly correlated with TVC and k value(P<0.05).The principal components analysis(PCA)analysis results showed that the puffer fish was at 0 and 4℃respectively.Corruption began to occur on the 5 and 7 d,which was consistent with the analysis results of physical and chemical indicators.Therefore,LF-NMR combined with PCA analysis could more intuitively analyze the relationship between water distribution and quality of Fugu bimaculatus during cold storage,and could better distinguish the changes in moisture and quality of Fugu bimaculatus during different storage periods.Therefore,consider using LF-NMR combined with PCA analysis technology to quickly detect changes in quality and freshness of Fugu bimaculatus during cold storage.

关 键 词：双斑东方鲀 品质变化 冷藏温度 水分迁移 低场核磁共振技术 主成分分析(PCA分析) 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]