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KMID : 0881720180330020102
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Journal of Food Hygiene and Safety
2018 Volume.33 No. 2 p.102 ~ p.109
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Monitoring of Heavy Metals Migrated from Polylactide (PLA) Food Contact Materials in Korea
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Kim Hyeon-Uk
Park So-Yeon
Jo Ye-Eun
Park Yong-Chjun
Park Se-Jong
Kim Mee-Hye
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Abstract
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In the present study, a variety of polylactide (PLA) articles (n = 211) were tested for migration of lead (Pb), cadmium (Cd) and arsenic (As) into the food simulant (4% v/v acetic acid). Pb, Cd, and As were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). Migration tests were performed at 70oC and 100oC for 30 min. The amounts of Pb, Cd, and As increased at 100oC for 30 min compared with levels at 70oC. However, the migration at both conditions was very low. The maximum level of Pb at 100oC for 30 min corresponded to 1% of the migration limit. The estimated daily intakes (EDI) based on safety evaluation ranged from 2.5 × 10?5 to 2.0 × 10?3 μg/ kg bw/day for Pb, Cd, and As. The EDI calculated from migration of Pb at 100oC for 30 min in PLA was the maximum value, 2.0 × 10?3 μg/kg bw/day, which corresponded to 0.055% of provisional tolerable weekly intake (PTWI, 25 μg/ kg bw/week). The data from this study represent a valuable source for science-based safety control and management of hazardous heavy metals migrating from polylactide food contact materials.
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KEYWORD
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Polylactide , PLA , Heavy metal , Migration monitoring
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