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Stabilization of mineral oil hydrocarbons in recycled paper pulp by organo-functionalized mesoporous silicas and evaluation of migration to food.
- Source :
- European Food Research & Technology; Aug2017, Vol. 243 Issue 8, p1471-1484, 14p
- Publication Year :
- 2017
-
Abstract
- The occurrence of mineral oil hydrocarbons (MOH) in cellulose-based packaging is mainly due to the offset printing process where MOH are used as a ink pigments' solvent. The MOH migration from paper/paperboard to food is matter of concern for EFSA, members state authorities, consumers, and food industry. In this study, the feasibility to stabilize MOH by adding a sorbent into recycled paper obtained through a common washing process was investigated and the migration to wheat flour/Tenax assessed. Among several white/pale yellow porous materials, organo-modified powder silica MCM-41-Si(CH) showed the best combination between affinity for MOH (184% dw) and stability to thermal regeneration. A freshly issued newspaper with >3000 mg MOH kg was used to produce recycled paper at a laboratory-scale plant. MCM-41-Si(CH) was added at the pulping step (1% dw) and the sorbent-enriched pulp handled according to a washing paper production process with no effect on the paper optical brightness. The MOH content of the wheat flour in contact with the sorbent-enriched paper under accelerated migration conditions (15 days at 40 °C) resulted 20% of that contacted with control paper (4.3 ± 1.1 and 20.4 ± 5.5 mg kg, respectively), despite its contamination was 24% higher than the control. On the contrary, Tenax contamination resulted 56.0 ± 10.0 and 47 ± 14.0 mg kg when exposed to sorbent-enriched and control paper, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- FOOD chemistry
MINERAL oils
PAPER pulp
HYDROCARBONS
MESOPOROUS silica
Subjects
Details
- Language :
- English
- ISSN :
- 14382377
- Volume :
- 243
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- European Food Research & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 124029773
- Full Text :
- https://doi.org/10.1007/s00217-017-2867-5