Octeville-sur-Mer, France
Octeville-sur-Mer, France

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Bacigalupi C.,Montpellier SupAgro | Lemaistre M.H.,Sidel | Boutroy N.,Sidel | Bunel C.,Sidel | And 3 more authors.
Food Chemistry | Year: 2013

Sensitivity to oxidation of an orange juice was investigated through packaging in standard PET or active PET with oxygen scavenger bottles. The evolution of dissolved oxygen was found to be similar in all bottles, whereas ascorbic acid degradation was related to the oxygen transfer with higher losses in standard PET (53%) against active PET (31%). Moreover, when juice was exposed to high intensity light, a fold faster degradation of ascorbic acid was observed compared to total darkness. Depending also on the light intensity and regardless of the package permeability, changes in the aromatic profile of the juice were observed due to the degradation of limonene and the formation of α-terpineol, an off-flavour. A mechanistic model was developed to predict the shelf life of orange juice. This model, coupling O2 transfer and ascorbic acid oxidation reaction in the bottled juice, confirmed that oxygen permeation through packaging material could not be neglected. © 2013 Elsevier Ltd. All rights reserved.


Bacigalupi C.,Sidel | Maurey A.,Sidel | Boutroy N.,Sidel | Peyron S.,Montpellier SupAgro | And 2 more authors.
Food Control | Year: 2015

The evolution of ascorbic acid, β-carotene and α-tocopherol contents was assessed during the storage of a fortified juice packed in PET or glass bottles. During the course of storage, oxygen transfer rates and partial oxygen pressures were evaluated as well as the vitamins. During the first month, a decrease of dissolved oxygen was observed for both PET and glass bottles. A strong degradation of ascorbic acid was noted after 3 months of storage (up to 54 at 72% in glass and PET bottles respectively) and the β-carotene content was virtually nil after 80 days. The ascorbic acid degradation was clearly stronger in PET comparing to glass bottles while no difference was observed for β-carotene between both packaging. However, β-carotene isomers (13- cis-β-carotene and 9- cis-β-carotene) were identified and their total concentrations were higher in glass bottles. The degradation reaction scheme of β-carotene seems to be mainly oxidation in PET bottles and isomerisation and then oxidation in glass bottles. Concerning tocopherol, its limited oxidation may be explained by regenerative action of ascorbic acid. From a nutritional point of view, the juice packed in glass bottles is more interesting since β-carotene isomers still have pro-vitamin activity. © 2015.


Trademark
Sidel | Date: 2010-08-03

Machines, namely, machines for producing components or hollow bodies by blow-molding preform; machines for producing bottles and plastic containers by blowing; machines for producing bottles and plastic containers by blow-molding; injection blow-molding machines. Repairing and installing services relating to machines for manufacturing plastic hollow bodies, machines for manufacturing bottles and other containers. Training in the use and operation of machines for manufacturing plastic hollow bodies, machines for manufacturing bottles and other containers.

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