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KMID : 1007520010100050479
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Food Science and Biotechnology
2001 Volume.10 No. 5 p.479 ~ p.482
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Analysis of Formaldehyde in Recycled and Commercial Papers for Food Packaging
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Lee, Kwang Ho
Jeon, Dae Hoon/Jeong, Dong Youn/Lee, Chul Won/Lee, Chang Hyun/Kwak, In Shin/Choi, Byung Hee
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Abstract
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Residual levels of formaldehyde in various paper products for food packaging were investigated. A modified ethyl acetoacetate (EA) method by a HPLC/ fluorescence detector was adopted for the analysis of formaldehyde. The 3,5-dicarbetoxy-l,4-dihydrolutidine derived from formaldehyde with ethyl acetoacetate was identified with GC/MSD. This method was proved to be very selective and sensitive with the detection limit of 10.0 ng/g and the recovery of 93% for determination of formaldehyde in test solutions of food packaging papers. In the recycled papers originated from box and newspaper, the residual levels of formaldehyde were 2.67 ㎎/㎏ and 4.56 ㎎/㎏, respectively, however, formadehyde was not detected in the papers originated pure fiber pulp. The residual levels of formaldehyde in commercial papers for food packaging such as paper wraps, cups, bread molds and corrugated boards were up to 4.34, 4.79, 1.27 and 5.38 ㎎/㎏, respectively. The results suggested that formaldehyde were contaminated into recycled and commercial papers by the addition of adhesives and inks during the process of manufacture.
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