Mb. Mariani et al., Potential migration of Diisopropyl naphthalenes from recycled paperboard packaging into dry foods, FOOD ADDIT, 16(5), 1999, pp. 207-213
The results of a study of the potential migration of diisopropyl naphthalen
es (DIPN) from recycled paperboard packaging into some types of dry solid f
oodstuffs are reported. Paperboard diskettes containing different DIPN conc
entrations were prepared and put into contact with four types of dry solid
foodstuffs, having high specific surface areas and different lipid contents
. At regular intervals the DIPN content in the foods was determined. Two mi
gration mechanisms have been proposed and verified. The first one relates t
o the direct contact existing between paperboard and foodstuff. The second
one refers to the indirect contact between paperboard and food, controlled
by an air space created above the paperboard into which the DIPN has diffus
ed Both mechanisms occurred and the migration depended on different factors
. the contact time, the characteristics of the foodstuffs and the DIPN cont
ent in the cellulose-based matrix. However, only very low levels of contami
nation in the foodstuffs occurred in migration. As a consequence, this repo
rt also considers possible limitations which could be applied to the conten
t of carbonless copy paper in packaging paperboard formulations.