Abstract：
:Previously, we developed a novel metal-chelating packaging film (PP-g-PAA) by grafting acrylic acid (AA) monomer from polypropylene (PP) film surface, and demonstrated its potential in controlling iron-promoted lipid oxidation. Herein, we further established the industrial practicality of this active film. Specifically, the influence of film surface area-to-product volume ratio (SA/V) and product pH on the application of the film was investigated using an oil-in-water emulsion system. The films equally inhibited lipid oxidation throughout the range of SA/V ratios tested (2-8 cm(2)/ml). PP-g-PAA films were most effective at pH 7.0, and the activity decreased with decreasing pH. The particle size examination of emulsions indicated no adverse influence from the active film on the stability of this emulsion system. FTIR analysis suggested a non-migratory nature of PP-g-PAA films. These results provide fundamental knowledge that will facilitate the application of this effective and economical active packaging film in the food industry.
journal_name
Food Chemjournal_title
Food chemistryauthors
Tian F,Decker EA,McClements DJ,Goddard JMdoi
10.1016/j.foodchem.2013.11.074subject
Has Abstractpub_date
2014-05-15 00:00:00pages
257-65eissn
0308-8146issn
1873-7072pii
S0308-8146(13)01710-Xjournal_volume
151pub_type
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