DENCS - Departamento de Nutrição Clínica e Social
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Navegando DENCS - Departamento de Nutrição Clínica e Social por Autor "Alves, Jeanne Clécia"
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Item Risk estimation to human health caused by the mercury content of Sushi and Sashimi sold in Japanese restaurants in Brazil.(2017) Alves, Jeanne Clécia; Paiva, Esther Lima de; Milani, Raquel Fernanda; Bearzoti, Eduardo; Morgano, Marcelo Antonio; Quintaes, Késia DiegoAlthough 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 mg kg¡1 in the tuna, kani, and salmon sushi samples, respectively, and 589.09, 85.09, and 11.38 mg kg¡1 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.Item Sushi commercialized in Brazil : organic Hg levels and exposure intake evaluation.(2016) Paiva, Esther Lima de; Alves, Jeanne Clécia; Milani, Raquel Fernanda; Boer, Bárbara Sia; Quintaes, Késia Diego; Morgano, Marcelo AntonioThe presence of organic mercury (methylmercury) in tuna, salmon and kani sushis marketed in restaurants specialising in Japanese foods (Campinas, São Paulo, Brazil), was investigated by atomic absorption spectrometer with thermal decomposition and amalgamation. Total mercury was analyzed directly, whilst organic mercury was quantified after a previous extraction with toluene in an acid solution, assisted by microwaves. Under these analytical conditions there was no interconversion between the inorganic and organic mercury. High sensitivity was observed for organic mercury, with limits of detection and quantification of 2.0 and 6.6 mg kg_1. The organic mercury contents ranged from 12 to 583 mg kg_1, 6.6 to 8.2 mg kg_1 and no detected values, for the tuna, kani and salmon sushi, respectively. The mean proportion of organic Hg/total Hg for tuna sushi was 88%, indicating that the most toxic form of mercury, organic Hg, predominate in this food. The estimated exposure to methylmercury was made by taking into account the Provisional Tolerable Weekly Intake (PTWI 1.6 mg/kg) considering the daily consumption of 150 g and 20 g per adults (60 kg) and children (15 kg), respectively. Our results demonstrated that the consumption of tuna sushi may exceed 100% of PTWI.