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KMID : 1007520010100020178
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Food Science and Biotechnology
2001 Volume.10 No. 2 p.178 ~ p.182
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Analysis of Metals from Recycled Papers and Paper Products for Food Packaging
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Yoo, Seung Seok
Lee, Kwang Ho/Jeon, Dae Hoon/Lee, Sun Hee/Kwack, In Shin
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Abstract
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Residual content and type of metals were analyzed on virgin fiber papers, recycled papers, paper samples before converting process, and commercial paper-based food packagings. The purpose of the study was to confirm the safety of paper and possibility of using recycled papers as food packaging. Virgin fiber samples were found to contain small amounts of metals, although the metals had not been proved as harmful elements yet. The recycled pulp sheets originated from offices showed a similar distribution of metals compared to that of virgin fiber samples at a reasonably low content. However, recycled pulp sheets based on the mixed wastes showed a distinct change in pattern in that metal content increased with the increment of recycled pulp proportion. The analysis on papers not subjected to the converting process showed that the content and the type of metal depend on the group of the paper products. Lead was present at high levels (≥100 ppm) in a paper wrap. Commercial paper food packaging revealed that paper package for instant foods contained as much as 43 and 183 ppm of chromium and lead, respectively. Analyses for the contaminant indicators focused on metals revealed that certain samples contained toxic metals, and the metal contents from recycled paper correlated with the proportion of the recycled paper type, which was based on the mixed wastes.
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