Shelf-life of Milk Packaged in Plastic Containers With and Without Treatment to Reduce Light Transmission

Cladman, Wendy; Scheffer, Steven; Goodrich, Nina; Griffiths, Mansel W.

doi:10.1016/s0958-6946(98)00094-6

Cited by 64 publications

(43 citation statements)

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“…Similar results have been shown by Cladman, Scheffer, Goodrich, and Griffiths (1998) for milk packaged in various plastics containers after a storage period of 6 days. Also, Vassila, Badeka, Kondyli, Savvaidis, and Kontominas (2002) have reported that photo-oxidation of milk packaged in various HDPE (high density polyethylene) pouch materials and paper board cartons increases with the storage time.…”

Section: Fatty Acids Compositionsupporting

confidence: 87%

Control of salmon oil photo-oxidation during storage in HPMC packaging film: Influence of film colour

Akhtar¹,

Jacquot²,

Arab‐Tehrany³

et al. 2010

Food Chemistry

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Section: Fatty Acids Compositionsupporting

confidence: 87%

Control of salmon oil photo-oxidation during storage in HPMC packaging film: Influence of film colour

Akhtar¹,

Jacquot²,

Arab‐Tehrany³

et al. 2010

Food Chemistry

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“…Due to the prolonged storability of UHT milk, however, even the high pigmentation of PET bottles (variants 3 and 4) could not prevent vitamin A losses of 37% after a storage period of 12 weeks at the lowest light intensity. The present findings partly correspond with those reported by Mestdagh et al 16 However, the findings by Cladman et al 24 could not be confirmed. They observed an effective preservation of vitamin A during an 18-day storage period under light in PET bottles that absorb a minimum of 95% of ultra-violet (UV) radiation, as it is the case for any pigmented PET bottle.…”

Section: Vitamin Asupporting

confidence: 74%

Effect of package light transmittance on vitamin content of milk. Part 2: UHT whole milk

Saffert¹,

Pieper²,

Jetten

2007

Packag Technol Sci

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This work is the second part of a milk study evaluating the effect of package light transmittance on the vitamin content of milk, in this case on UHT whole milk. The milk was stored at three different light intensities in polyethylene terephthalate (PET) bottles with varying light transmittance as described by Saffert et al. (2006). Changes in the vitamin A, B 2 and D 3 content were monitored over a storage period of 12 weeks at 23°C. Losses in vitamins A and B 2 were most pronounced in completely transparent PET bottles exposed to the highest light intensity. In these bottles, a reduction of the light intensity reduced the vitamin A loss from 88 to 66%, while in the case of vitamin B 2 the complete decomposition was just delayed from 4 to 8 weeks storage. The vitamin D 3 losses in clear PET bottles were almost independent of the light intensity. For pigmented PET bottles, the impact of package light transmittance and light intensity differed for each vitamin. An increase in package light transmittance and light intensity was found to be most decisive for vitamin B 2 stability. In the case of vitamin D 3 , only the increase in light intensity was found to be of relevance, whereas for vitamin A stability the influence of increased package light transmittance and light intensity could not be clearly observed. In dark-stored 'control' samples, the analysed vitamins were almost stable.

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“…Moreover, UV light seems to have a detrimental effect on vitamin and pigment degradation. 50,51 The fi nal result is the appearance of off-fl avours and signifi cant changes in colour that preclude their marketing. Among the different approaches that could prevent these changes (food formulation and processing, storage and light exposure conditions), the choice of an ideal packaging appears fundamental.…”

Section: Transparency and Hazementioning

confidence: 99%

Evaluation of a bio‐coating as a solution to improve barrier, friction and optical properties of plastic films

2008

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The present research dealt with evaluating barrier, friction and optical properties of three different plastic fi lms after deposition of a gelatin-based bio-coating. The composite fi lms showed improved barrier properties against oxygen and UV radiation. The oxygen transmission rate decreased in the order of 73% for oriented polypropylene (OPP), 56% for low-density polyethylene (LDPE) and 40% for polyethylene terephthalate (PET). The increased UV barrier characteristics ranged from 20% for OPP to 12% for both LDPE and PET. Static and kinetic coeffi cients of friction signifi cantly decreased both in the fi lm-to-fi lm and in the fi lm-to-metal tests, leading to a desirable value for many applications. However, bio-coated fi lms showed lower optical performances in terms of transparency and haze. Transparency decreased mainly for LDPE (36%), whereas the haze index increased especially for OPP (85%). Non-signifi cant differences were observed as far as the water vapour permeability was concerned, except for a slight reduction for PET (from 15.78 to 13.53 cm 3 /m 2 /day at 23°C and 90% of relative humidity), suggesting that non-meaningful effects arose from the addition of a hydrophobic component in the original formulation. Finally, the solubility of the coating in water was around 25% for all the three plastic substrates. The obtained data suggest that the lipid protein coating tested in this study, in spite of its great potential for enhancing some characteristics of plastic packaging fi lms, still exhibits negative aspects which necessitate further improvement.

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Shelf-life of Milk Packaged in Plastic Containers With and Without Treatment to Reduce Light Transmission

Cited by 64 publications

References 0 publications

Control of salmon oil photo-oxidation during storage in HPMC packaging film: Influence of film colour

Control of salmon oil photo-oxidation during storage in HPMC packaging film: Influence of film colour

Effect of package light transmittance on vitamin content of milk. Part 2: UHT whole milk

Evaluation of a bio‐coating as a solution to improve barrier, friction and optical properties of plastic films

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