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  • Title: In Vitro Bioaccessibility of Carotenoids and Vitamin E in Rosehip Products and Tomato Paste As Affected by Pectin Contents and Food Processing.
    Author: Al-Yafeai A, Böhm V.
    Journal: J Agric Food Chem; 2018 Apr 18; 66(15):3801-3809. PubMed ID: 29624382.
    Abstract:
    Limited bioavailability of antioxidants present in food from fruits and vegetables matrices is determined by their low bioaccessibility due to the physical and chemical interactions of the antioxidants with the indigestible polysaccharides of cell walls. Therefore, this in vitro investigation aimed to assess the bioaccessibility of carotenoids and vitamin E from rosehips as well as from tomato paste and to investigate several aspects of effects of pectin contents and food processing on bioaccessibility. Following the addition of the enzyme mixture Fructozym P6-XL, the bioaccessibility of carotenoids from rosehips as well as from tomato paste significantly increased. The average relative increase in bioaccessibility from rosehips was lower for ( all-E)-β-carotene compared with ( all-E)-lycopene and ( all-E)-rubixanthin. In contrast, increases of bioaccessibility of α-tocopherol were comparable for rosehip samples and tomato paste.
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