Element concentrations of large rainbow trout (<i>Oncorhynchus mykiss</i>) in the Black Sea: selenium-mercury balance and the risk assessments for consumer health

This research determined the element values, selenium, and mercury balance of the large rainbow trout (<i>Oncorhynchus mykiss</i>) cultured in the Black Sea and the possible health risk for the consumer. By the end of the investigation, the concentration of components in these cultivated large rainbow trout in the Black Sea met the requirements specified by national and international legislation. According to analyses of the hazard risk associated with consuming, it has been determined that independent of nutritional quality, large rainbow trout produced on Turkey’s Black Sea coast offers no risk to human consumption regarding element values and may be ingested safely.HIGHLIGHTSHealth risks associated with the consumption of large rainbow trout in the Black Sea were assessed.Particularly Se had a protective effect against the effects of Hg on human health.EDI, THQ, and CR_mm values did not pose a risk to human health.Biomagnification factors were low except Hg. Health risks associated with the consumption of large rainbow trout in the Black Sea were assessed. Particularly Se had a protective effect against the effects of Hg on human health. EDI, THQ, and CR_mm values did not pose a risk to human health. Biomagnification factors were low except Hg.

本研究测定了黑海养殖的大型虹鳟（*Oncorhynchus mykiss*）的元素含量、硒（Selenium，Se）与汞（Mercury，Hg）的平衡情况，以及其对消费者可能带来的健康风险。经本次调查确认，该黑海养殖大型虹鳟体内各组分的浓度符合国家及国际法规规定的相关要求。通过对食用该鱼类的相关危害风险进行分析后可得出结论：无论营养品质如何，土耳其黑海沿岸养殖的大型虹鳟在元素含量方面均不会对人体健康造成风险，可安全食用。

研究亮点：
1. 评估了食用黑海养殖大型虹鳟所引发的健康风险；
2. 硒（Se）可对汞（Hg）损害人体健康的效应发挥保护作用；
3. 每日允许摄入量（Estimated Daily Intake，EDI）、靶标危害商（Target Hazard Quotient，THQ）与慢性风险值（CR_mm）均未对人体健康构成风险；
4. 除汞（Hg）外，其余元素的生物放大因子均处于较低水平。