title: Influence of some packaging materials and of natural tocopherols on the sensory properties of breakfast cereals.
abstract: The combined effect of natural antioxidants and packaging materials on the quality decay of breakfast cereals during storage was evaluated. Corn flakes were produced on industrial scale, using different packages and adding natural tocopherols to the ingredients, and stored for 1 year. The samples were then submitted to sensory analysis and HS-solid phase microextraction/gas chromatography/mass spectrometry (SPME/GC/MS) analysis. The packaging had a significant influence on the sensory profile of the aged product: metallized polypropylene gave the highest levels of oxidation compounds and sensory defects. The sensory profile was improved using polypropylene and especially high-density polyethylene. Natural tocopherols reduced the sensory decay of the flakes and the oxidative evolution of the volatile profile. They gave the most remarkable improvement in polypropylene (either metallized or not) packs. Polypropylene showed a barrier effect on the scalping of volatiles outside of the pack. This led to higher levels of oxidation volatiles and faster rates of the further oxidative processes involving the volatiles.
authors.affiliation: Department of Soil, Plant and Food Sciences, Food Science and Technology Unit, University of Bari "Aldo Moro", Bari, Italy.
authors.forename: Vito M
authors.initials: VM
authors.lastname: Paradiso
authors.forename: Francesco
authors.initials: F
authors.lastname: Caponio
authors.forename: Carmine
authors.initials: C
authors.lastname: Summo
authors.forename: Tommaso
authors.initials: T
authors.lastname: Gomes
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000494:pharmacology*; D062408:Breakfast; D004347:Drug Interactions; D002523:Edible Grain / Q000737:chemistry*; D005260:Female; D018857:Food Packaging / Q000295:instrumentation*; D063427:Food Quality; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008297:Male; D009812:Odorants / Q000032:analysis; D010084:Oxidation-Reduction; D020959:Polyethylene / Q000494:pharmacology; D011126:Polypropylenes / Q000737:chemistry / Q000494:pharmacology*; D012677:Sensation; D012903:Smell; D052617:Solid Phase Microextraction; D013649:Taste; D024505:Tocopherols / Q000494:pharmacology*; D014835:Volatilization
chemical_list: D000975:Antioxidants; D011126:Polypropylenes; D020959:Polyethylene; D024505:Tocopherols
keywords: Breakfast cereals; food quality; natural antioxidants; packaging/antioxidants interaction