In vitro bioaccessibility of carotenoids, flavonoids, and vitamin C from differently processed oranges and orange juices [Citrus sinensis (L.) Osbeck].
Identifieur interne : 000584 ( Main/Exploration ); précédent : 000583; suivant : 000585In vitro bioaccessibility of carotenoids, flavonoids, and vitamin C from differently processed oranges and orange juices [Citrus sinensis (L.) Osbeck].
Auteurs : Julian K. Aschoff [Allemagne] ; Sabrina Kaufmann ; Onur Kalkan ; Sybille Neidhart ; Reinhold Carle ; Ralf M. SchweiggertSource :
- Journal of agricultural and food chemistry [ 1520-5118 ] ; 2015.
English descriptors
- KwdEn :
- Ascorbic Acid (metabolism), Beverages (analysis), Carotenoids (metabolism), Citrus sinensis (chemistry), Citrus sinensis (metabolism), Digestion, Flavonoids (metabolism), Food Handling (methods), Fruit (chemistry), Fruit (metabolism), Gastrointestinal Tract (metabolism), Humans, In Vitro Techniques, Models, Biological.
- MESH :
- chemical , metabolism : Ascorbic Acid, Carotenoids, Flavonoids.
- analysis : Beverages.
- chemistry : Citrus sinensis, Fruit.
- metabolism : Citrus sinensis, Fruit, Gastrointestinal Tract.
- methods : Food Handling.
- Digestion, Humans, In Vitro Techniques, Models, Biological.
Abstract
Carotenoid, flavonoid, and vitamin C concentrations were determined in fresh orange segments and a puree-like homogenate derived thereof, as well as freshly squeezed, flash-pasteurized, and pasteurized juices. Lutein and β-cryptoxanthin were slightly degraded during dejuicing, whereas β-carotene levels were retained. Vitamin C levels remained unaffected, whereas flavonoid levels decreased 8-fold upon juice extraction, most likely due to the removal of flavonoid-rich albedo and juice vesicles. Likewise, the presence of such fibrous matrix compounds during in vitro digestion was assumed to significantly lower the total bioaccessibility (BA) of all carotenoids from fresh fruit segments (12%) as compared to juices (29-30%). Mechanical disruption of orange segments prior to digestion did not alter carotenoid BA, whereas pasteurization of the freshly squeezed juice slightly increased BA by 9-11%. In addition to carotenoid BA, the stabilities of hesperidin, narirutin, and vitamin C including dehydroascorbic acid during in vitro digestion were monitored, and applied analytical methods were briefly validated.
DOI: 10.1021/jf505297t
PubMed: 25539394
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Carotenoid, flavonoid, and vitamin C concentrations were determined in fresh orange segments and a puree-like homogenate derived thereof, as well as freshly squeezed, flash-pasteurized, and pasteurized juices. Lutein and β-cryptoxanthin were slightly degraded during dejuicing, whereas β-carotene levels were retained. Vitamin C levels remained unaffected, whereas flavonoid levels decreased 8-fold upon juice extraction, most likely due to the removal of flavonoid-rich albedo and juice vesicles. Likewise, the presence of such fibrous matrix compounds during in vitro digestion was assumed to significantly lower the total bioaccessibility (BA) of all carotenoids from fresh fruit segments (12%) as compared to juices (29-30%). Mechanical disruption of orange segments prior to digestion did not alter carotenoid BA, whereas pasteurization of the freshly squeezed juice slightly increased BA by 9-11%. In addition to carotenoid BA, the stabilities of hesperidin, narirutin, and vitamin C including dehydroascorbic acid during in vitro digestion were monitored, and applied analytical methods were briefly validated.</div>
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