三种加工方式海带中砷形态和含量的比较  

Comparison of Three Kinds of Processing Methods on Arsenic Speciation and Content in Laminaria japonica

作　　者：赵梦醒[1,2] 刘淇[1] 江志刚[3] 雷敏[2] 曹荣[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,山东青岛266071 [2]青岛农业大学食品科学与工程学院,山东青岛266109 [3]山东出入境检验检疫局,山东青岛266001

出　　处：《食品与生物技术学报》2013年第5期529-535,共7页Journal of Food Science and Biotechnology

基　　金：公益性行业(农业)科研专项(200903030)

摘　　要：以不同加工方式(直接干燥、漂烫、漂烫-盐渍-水洗)的海带为研究对象,采用高效液相色谱-电感耦合等离子体质谱(HPLC-ICP-MS)联用技术测定砷的形态和含量。结果表明,直接干燥海带和漂烫后海带总砷含量分别为47.23 mg/kg和42.91 mg/kg(以干重计),无显著差异(P>0.05);漂烫-盐渍-水洗后的海带总砷含量为25.62 mg/kg(以干重计),与直接干燥海带和漂烫后海带相比差异极显著(P<0.01);海带中总砷含量经漂烫-盐渍-水洗后逐步减少,尤以盐渍水洗过程减少最明显。海带中砷的主要形态为有机态,分别是砷胆碱、砷甜菜碱、二甲基砷和3种疑似砷糖的物质,其中砷糖质量分数最高(w>95%),无机砷质量分数最低(w<1%)。The aims of this manuscript were to study arsenic speciation and content in kelp with different processing methods(direct drying,blanching,blanching-salting-washing) by high performance liquid chromatography coupled to inductively coupled plasma-mass spectrometry(HPLC-ICP-MS).The results showed that the total arsenic content in direct drying kelp was 47.23 mg/kg and blanching kelp was 42.91 mg/kg(dry weight) with no significant differences(P>0.05).The total arsenic content in blanching-salting-washing kelp was 25.62 mg/kg(dry weight),there was extremely significant differences(P<0.01) from direct drying kelp and blanching kelp.The total arsenic content in kelps was gradually decreased after blanching-salting-washing,while the saltingwashing process decreased most obviously.Arsenocholine,arsenobetaine,dimethylarsinic acid and three substances suspected as arsenicsugar were the major arsenic forms in kelps,which arsenicsugar was in the hightest amount(w>95%) and inorganic arsenic was in the lowest amount(w<1%).

关 键 词：海带 加工方式 砷形态 含量 

分 类 号：TS254.7[轻工技术与工程—水产品加工及贮藏工程]