Mercury distribution in the muscular tissue of farmed southern bluefin tuna (Thunnus maccoyii) is inversely related to the lipid content of tissues
Mercury distribution in the muscular tissue of farmed southern bluefin tuna (Thunnus maccoyii) is inversely related to the lipid content of tissues
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DOI：
10.1016/j.foodchem.2008.04.041
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发表时间：
2008-12-01
期刊：
影响因子：
8.8
通讯作者：
Daughtry, B. J.
中科院分区：
文献类型：
--
作者：
Balshaw, S.;Edwards, J. W.;Daughtry, B. J.
测量了养殖的南方蓝鳍金枪鱼（Thunnus maccoyii）的所有可食用组织和这些鱼（akami、chu-toro、o-toro）的每个市售组织切片的全组织复合物中的脂质含量和总汞浓度。尽管在鱼的大小，条件因素和培养时间的差异，汞浓度的组织切片和复合样品被发现减少与增加脂质含量在-0.00476汞（毫克/千克）/%脂质内每一条鱼的一致率。因此，脂质积累似乎对已经与鱼类组织相关的汞具有稀释效应。脂质对某些组织切片（o-toro）的亲和力比对其他组织切片（如akami）的亲和力更高，导致鱼肌肉组织中汞浓度的跨胴体变化，这对汞咨询声明有明显的影响-收集用于分析的组织样本至关重要。(c)2008爱思唯尔有限公司保留所有权利。
The lipid content and total mercury concentration were measured in whole tissue composites of all edible tissues of farmed southern bluefin tuna (Thunnus maccoyii) and each of the marketed tissue cuts of these fish (akami, chu-toro, o-toro). Despite differences in fish size, condition factor and culture time, the mercury concentrations of tissue cuts and composite samples were found to decrease with increasing lipid content at a consistent rate of -0.00476 Hg (mg/kg)/% lipid within each fish. Consequently, lipid accumulation appears to have a dilution effect on mercury already associated with fish tissues. The increased affinity of lipid for certain tissue cuts (o-toro) over that of others (e.g. akami), results in cross carcass variation in the mercury concentration of fish muscular tissue with clear implications for mercury advisory statements - the tissue sample collected for analysis is critical. (c) 2008 Elsevier Ltd. All rights reserved.