南极磷虾不同部位氟形态及其分布特征  

Distribution Characteristics and Speciation of Fluorine in Different Parts of Antarctic Krill

作　　者：郭帆 汪之和 施文正 方兵 GUO Fan;WANG Zhihe;SHI Wenzheng;FANG Bing(Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation,College of Food Sciences and Technology,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学食品学院,上海水产品加工及贮藏工程技术研究中心,上海201306

出　　处：《食品科学》2018年第8期237-242,共6页Food Science

基　　金：“十二五”国家科技支撑计划项目(2015BAD17B02);国家高技术研究发展计划(863计划)项目(2011AA090801);上海市科委工程中心能力提升项目(16DZ2280300)

摘　　要：利用连续化学-超声波浸提法,对南极磷虾全虾、虾头、虾壳、虾肉中总氟含量以及氟的存在形态进行研究分析。结果表明:总氟含量依次为虾壳>虾头>全虾>虾肉。不同部位不同形态氟含量以残余态最高,其次为可交换态,氧化态氟和有机态氟含量相对较低,水溶态氟含量极少。由此可见,南极磷虾中氟的形态大部分以残余态和可交换态存在。相关性分析表明:水溶态氟与可交换态氟呈显著正相关(r=0.495**),氧化态氟与残余态氟呈显著负相关(r=-0.254*),有机态氟与残余态氟呈显著正相关(r=0.312*)。水溶态氟与南极磷虾p H值和水分含量均呈显著正相关(r=0.737**,r=0.292*),有机态氟与蛋白质含量呈显著正相关(r=0.324*),残余态氟与蛋白质含量呈显著负相关(r=-0.366*)。本研究可为南极磷虾不同组织中氟的不同存在形态提供科学依据,也为南极磷虾脱氟研究提供理论基础。The total fluorine content and its forms in the whole body,head,shell and meat of Antarctic krill were analyzed using ultrasonic-assisted sequential extraction.The results showed that the total fluorine content in different body parts of shrimps was in the following order:shell>head>whole body>meat.For all the body parts,residual fluorine was the most abundant,followed by the exchangeable state;the contents of oxidized and organic fluorine were relatively low,and the content of water soluble fluorine was very low.Thus it was evident that fluorine in Antarctic krill mostly existed in the exchangeable and residual form.Correlation analysis showed a significantly positive correlation between water soluble fluorine and exchangeable fluorine(r=0.495**).Fluorine in the oxidized state was significantly and negatively correlated with residual fluoride(r=?0.254*).Organic fluorine and residual fluorine were positively correlated(r=0.312*).There was also a significantly positive correlation of water soluble fluorine with pH(r=0.737**)and moisture content(r=0.292*).Organic fluorine and protein content showed a significantly positive correlation(r=0.324*).Residual fluoride and protein content were negatively correlated(r=?0.366*).This study can provide a scientific basis for understanding different forms of fluoride in different parts of Antarctic krill,and also provide a theoretical basis for the defluorination of Antarctic krill.

关 键 词：南极磷虾 氟形态 相关性分析 

分 类 号：TS254[轻工技术与工程—水产品加工及贮藏工程]