Alves Jeanne Clécia, Lima de Paiva Esther, Milani Raquel Fernanda, Bearzoti Eduardo, Morgano Marcelo Antonio, Diego Quintaes Késia
a Postgraduate Programme in Nutrition and Health, Nutrition School, Ouro Preto Federal University , Ouro Preto , Minas Gerais , Brazil.
b Center of Food Science and Quality, Institute of Food Technology , Campinas , São Paulo , Brazil.
J Environ Sci Health B. 2017 Jun 3;52(6):418-424. doi: 10.1080/03601234.2017.1293451. Epub 2017 Mar 8.
Although fish is a healthy alternative for meat, it can be a vehicle for mercury (Hg), including in its most toxic organic form, methylmercury (MeHg). The objective of the present study was to estimate the risk to human health caused by the consumption of sushi and sashimi as commercialized by Japanese food restaurants in the city of Campinas (SP, Brazil). The total Hg content was determined by atomic absorption spectrometry with thermal decomposition and amalgamation, and the MeHg content calculated considering that 90% of the total Hg is in the organic form. The health risk was estimated from the values for the provisional tolerable weekly ingestion (PTWI) by both adults and children. The mean concentrations for total Hg were: 147.99, 6.13, and 3.42 µg kg in the tuna, kani, and salmon sushi samples, respectively, and 589.09, 85.09, and 11.38 µg kg in the tuna, octopus and salmon sashimi samples, respectively. The tuna samples showed the highest Hg concentrations. One portion of tuna sashimi exceeded the PTWI value for MeHg established for children and adults. The estimate of risk for human health indicated that the level of toxicity depended on the type of fish and size of the portion consumed.
尽管鱼类是肉类的健康替代品，但它可能是汞（Hg）的载体，包括其毒性最强的有机形式甲基汞（MeHg）。本研究的目的是评估巴西圣保罗州坎皮纳斯市日本餐厅商业化售卖的寿司和生鱼片消费对人类健康造成的风险。通过热分解和汞齐化原子吸收光谱法测定总汞含量，并考虑到总汞的90%为有机形式来计算甲基汞含量。根据成人和儿童的暂定每周耐受摄入量（PTWI）值估算健康风险。金枪鱼、蟹肉和三文鱼寿司样品中总汞的平均浓度分别为147.99、6.13和3.42微克/千克，金枪鱼、章鱼和三文鱼生鱼片样品中总汞的平均浓度分别为589.09、85.09和11.38微克/千克。金枪鱼样品的汞浓度最高。一份金枪鱼刺身超过了为儿童和成人设定的甲基汞PTWI值。对人类健康风险的评估表明，毒性水平取决于鱼类种类和食用份量。
