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Oxidative stability of n-3-enriched chicken patties under different package-atmosphere conditions.

Food chemistry (2014-08-31)
Ana Penko, Tomaž Polak, Mateja Lušnic Polak, Tomaž Požrl, Damir Kakovič, Božidar Žlender, Lea Demšar
ABSTRACT

The oxidation processes were studied in chicken patties, enriched with n-3 fatty acids, after 8days of storage at 4°C, under different aerobic conditions, and following heat treatment. Significant effects were seen on lipid and cholesterol oxidation and the sensory qualities for whole flaxseed addition in the chicken feed (i.e., n-3 fatty acid enrichment), and for the different package-atmosphere conditions. For the raw chicken patties, n-3 enrichment increased the colour L(∗) values while, after the heat treatment, there were higher thiobarbituric acid-reactive substances (TBARs) and cholesterol oxidation products (COPs), and the rancidity was more pronounced. In comparison with the low O2 (<0.5%) package-atmosphere condition, O2 enrichment (80%) increased the instrumentally measured colour values, TBARs, total and individual COPs, and the rancidity became pronounced. The most suitable package-atmosphere condition of these raw n-3-enriched chicken patties is a very low O2 atmosphere, with or without an O2 scavenger.

MATERIALS
Product Number
Brand
Product Description

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25-Hydroxycholesterol, ≥98%
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Trichloroacetic acid, suitable for electrophoresis, suitable for fixing solution (for IEF and PAGE gels), ≥99%
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Trichloroacetic acid, ACS reagent, ≥99.0%
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Trichloroacetic acid, BioXtra, ≥99.0%
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Trichloroacetic acid, ≥99.0% (titration)
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2-Thiobarbituric acid, ≥98%
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Acetonitrile solution, contains 0.05 % (v/v) trifluoroacetic acid
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