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  1. Packaging preservation of bêta-carotene in sweet potato flakes using flexible film and an oxygen absorber.

    Article - En anglais

    Sweet potato flakes are potentially an affordable, shelf-stable source of provitamin A bêta-carotene.

    Because bêta-carotene is susceptible to oxidative degradation, particularly in dehydrated food materials exposed to atmospheric oxygen, several packaging conditions were evaluated for enhancement of bêta-carotene retention in sweet potato flakes during storage.

    The flakes were packaged in either a polypropylene film (high oxygen permeability) with air headspace or a nylon laminate film (low oxygen permeability) with air headspace, under vacuum, or with an Ageless oxygen absorber sachet enclosed.

    Packaged flakes were stored in the dark at ambient laboratory temperature (~23C), and bêta-carotene content was determined at intervals from 0 to 210 day storage using reversed-phase liquid chromatography.

    Among the packaging conditions tested, bêta-carotene retention was enhanced incrementally as the apparent availability of oxygen was reduced (nylon>polypropylene ; oxygen absorber>vacuum>air headspace).

    The combined use of oxygen absorbers and flexible oxygen barrier film gave excellent retention of bêta-carotene during the 210 day trial.

    Mots-clés Pascal : Dégradation oxydante, Emballage matière plastique, Amide polymère, Emballage sous vide, Perméabilité gaz, Patate douce, Flocon, Produit déshydraté, Bétacarotène, Prix vente, Durée conservation, Légume, Aliment santé, Pays en développement, Propène polymère, Matériau absorbant, Oxygène, Hypovitaminose, Guatemala, Amérique Centrale, Amérique

    Mots-clés Pascal anglais : Oxidative degradation, Plastic bag packaging, Nylon, Vacuum packaging, Gas permeability, Sweet potato, Flake, Dehydrated product, Betacarotene, Selling price, Shelf life, Vegetable, Health food, Developing countries, Propylene polymer, Absorbent material, Oxygen, Hypovitaminosis, Guatemala, Central America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0479432

    Code Inist : 002A35B09. Création : 22/03/2000.