Risks of migration from traditional metallic teapots

Assuming realistic consumption scenarios (4 cups of natural tea or lemon tea per day, 15 minutes infusion) a daily intake of 1.7 to 320 μg of lead per kg bw was estimated for a person weighing 60 kg. Based on the EFSA established BMDL values (EFSA, 2010), this intake corresponds to a Margin of Exposure (MoE) lower to much lower than 1, indicating serious potential risks for public health. In addition, from subsequent experiments the exposure to lead from these teapots seems to be rather chronicle. The amount of lead migrating seems not to be related to the composition of the teapots, although... Mehr ...

Verfasser: Federal Agency for the Safety of the Food Chain
Dokumenttyp: report
Erscheinungsdatum: 2011
Schlagwörter: Opinion / metals / lead / nickel / migration / materials in contact / traditional dishes / Belgium
Sprache: unknown
Permalink: https://search.fid-benelux.de/Record/base-26580833
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://zenodo.org/record/439029

Assuming realistic consumption scenarios (4 cups of natural tea or lemon tea per day, 15 minutes infusion) a daily intake of 1.7 to 320 μg of lead per kg bw was estimated for a person weighing 60 kg. Based on the EFSA established BMDL values (EFSA, 2010), this intake corresponds to a Margin of Exposure (MoE) lower to much lower than 1, indicating serious potential risks for public health. In addition, from subsequent experiments the exposure to lead from these teapots seems to be rather chronicle. The amount of lead migrating seems not to be related to the composition of the teapots, although the composition is important. For nickel too, a relatively high exposure was observed, which could amount up to five (tea nature) and 14.8 (lemon tea) times higher than the WHO toxicological reference value of 0.7 mg/day (WHO, 2005). The migration of the other metallic elements investigated appeared to be less significant. Even though the risk associated with the use of traditional brass teapots can only be viewed unambiguously by a comprehensive study, including biomonitoring, it is recommended to advise against the use of such teapots and to forbid their sale. Moreover, besides such teapots, other contact materials (ceramic pots or dishes such as tajine) for which the use is rather culturally defined, appear to be important risk factors for the exposure to metallic elements (especially lead) as well. Consequently, specific communication that highlights the risks of such contact materials is strongly recommended. Furthermore, the FASFC control program should pay due attention to the migration of metallic elements (lead, but also others such as nickel) from similar craft utensils (e.g. brass, enameled cast iron) and ceramic materials that come into contact with food. ; BE; fr; secretariaat.scicom@favv-afsca.be