Role of structural barriers in the in vitro bioaccessibility of anthocyanins in comparison with carotenoids.
Food Chem
; 227: 271-279, 2017 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-28274432
Although natural structural barriers are factors limiting nutrient bioaccessibility, their specific role in anthocyanin bioaccessibility is still unknown. To better understand how natural barriers govern bioactive compound bioaccessibility, an experimental approach comparing anthocyanins and carotenoids was designed, using a single plant matrix. Initial results revealed increased anthocyanin bioaccessibility in masticated black carrot. To explain this observation, samples with increasing levels of bioencapsulation (free-compound, homogenized-puree, puree) were examined. While carotenoid bioaccessibility was inversely proportional to the level of bioencapsulation, barrier disruption did not increase anthocyanin bioaccessibility. This means that mechanical processing is of particular importance in the case of carotenoid bioaccessibility. While micelle incorporation is the limiting factor for carotenoid bioaccessibility, anthocyanin degradation under alkaline conditions in the gastrointestinal tract dominates. In the absence of structural barriers, anthocyanin bioaccessibility is greater than that of carotenoids.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Extratos Vegetais
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Carotenoides
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Daucus carota
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Antocianinas
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article