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J Sci Food Agric. 2016 Jun;96(8):2782-7. doi: 10.1002/jsfa.7443. Epub 2015 Oct 1.

Stability of flavoured phytosterol-enriched drinking yogurts during storage as affected by different packaging materials.

Author information

1
Department of Food Engineering, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5 Mănăştur St, 400372 Cluj-Napoca, Romania.
2
Inter-Departmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum-Università di Bologna, Piazza Goidanich 60, 47521 Cesena, Italy.
3
Department of Food Science, Alma Mater Studiorum-Università di Bologna, Viale Fanin 40, 40127 Bologna, Italy.
4
Granarolo S.p.A., Via Cadriano 27/2, 40127 Bologna, Italy.

Abstract

BACKGROUND:

The aim of this study was to investigate the influence of different packaging materials on storage stability of flavoured phytosterol-enriched drinking yogurts. White vanilla (WV) and blood orange (BO) phytosterol-enriched drinking yogurts conditioned in mono-layer and triple-layer co-extruded plastic bottles were stored at +6 ± 1 °C for 35 days (under alternating 12 h light and 12 h darkness) to simulate shelf-life conditions. Samples were collected at three different storage times and subjected to determination of total sterol content (TSC), peroxide value (PV) and thiobarbituric acid reactive substances (TBARs).

RESULTS:

TSC was not significantly affected by packaging material or storage time and met the quantity declared on the label. PV was significantly influenced by yogurt type × packaging material × storage time interaction and TBARs by packaging material × storage time interaction.

CONCLUSION:

Between the two packaging materials, the triple-layer plastic mini bottle with black coloured and completely opaque intermediate layer offered the best protection against lipid oxidation. © 2015 Society of Chemical Industry.

KEYWORDS:

bottle packaging material; flavoured phytosterol-enriched drinking yogurt; functional foods; lipid oxidation; storage

PMID:
26332790
DOI:
10.1002/jsfa.7443
[Indexed for MEDLINE]

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