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Iron migration from undamaged and dented juice tinplate cans
Author(s) -
Veríssimo Marta IS,
Silva Rui PO,
Gomes Maria Teresa SR
Publication year - 2016
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7474
Subject(s) - organoleptic , food science , atomic absorption spectroscopy , polyethylene , chemistry , metallurgy , materials science , composite material , physics , quantum mechanics
BACKGROUND Iron migration from tinplate cans to pineapple drink was studied over time using flame atomic absorption spectroscopy, taking into consideration storage temperature, sell‐by date and can condition (dented/undamaged). An organoleptic test, at the sell‐by date, was also performed. RESULT Analysis of iron in drinks from tinplate cans, glass and polyethylene terephthalate ( PET ) bottles was performed up until the sell‐by date. For undamaged canned drinks stored at room temperature, iron was found to remain constant at 0.23 ± 0.01 mg L −1 , from the 24th day until 1 year after production. Iron found in glass and PET bottles also remained constant until the sell‐by date, at 0.15 ± 0.04 and 0.12 ± 0.04 mg L −1 , respectively. However, migration of iron from dented cans was found to be significant. Twelve months after production, iron content in dented cans, stored at room temperature (22 °C) and in a refrigerator chamber (4 °C) was 14.4 ± 1.0 and 5.5 ± 0.4 mg L −1 , respectively. CONCLUSION Results showed that for a 35 kg child the intake of three damaged canned drinks may contribute to more than 50% of the iron provisional maximum tolerance daily intake. © 2015 Society of Chemical Industry