Biobased mineral‐oil barrier‐coated food‐packaging films

ABSTRACT Toxic mineral oils can migrate into foods from cardboard boxes made of recycled fibers. This is an emerging issue for the whole dry‐food‐packaging industry. Breakfast cereals, for example, are typically packaged in boxes with or without inner bags and consumed without further processing. Cu...

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Bibliographic Details
Published in:Journal of applied polymer science 2017-03, Vol.134 (9), p.np-n/a
Main Authors: Vartiainen, Jari, Laine, Christiane, Willberg‐Keyriläinen, Pia, Pitkänen, Marja, Ohra‐aho, Taina
Format: Article
Language:English
Subjects:
Bags
Barriers
biopolymers and renewable polymers
Boxes
Boxes (containers)
Breakfast cereals
Cardboard
Cellulose
cellulose and other wood products
Cereals
Coating
coatings
Density
Drying
Fibers
Food
Food packaging industry
High density
High density polyethylenes
Materials science
Migration
Mineral oils
Nanostructure
packaging
Polyethylene
Polyethylenes
Polymers
polysaccharides
Protective coatings
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Summary:ABSTRACT Toxic mineral oils can migrate into foods from cardboard boxes made of recycled fibers. This is an emerging issue for the whole dry‐food‐packaging industry. Breakfast cereals, for example, are typically packaged in boxes with or without inner bags and consumed without further processing. Currently, fossil‐based high‐density polyethylene (HDPE) films are used as a major raw material for such inner bags. However, HDPE is a very poor barrier against mineral‐oil migration. Biobased coatings from cellulose nanofibrils (CNFs), hydroxypropylated xylan, and hydroxypropylated cellulose were applied onto biobased high‐density polyethylene (bio‐HDPE) films, and the mineral‐oil barrier properties were evaluated. All of the coated films significantly decreased the migration of n‐decane, isobutylbenzene, 1‐cyclohexylbutane, 1‐cyclohexylheptane, and 1‐cyclohexyldecane. Biobased barrier bags prepared from (2,2,6,6‐tetramethylpiperidin‐1‐yl)oxy oxidized CNF coated bio‐HDPE film protected the content to a great extent from mineral‐oil migration compared to noncoated bio‐HDPE and other commercial breakfast cereal‐bag films. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44586.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.44586