Carotenoids are more bioavailable from papaya than from tomato and carrot in humans: a randomised cross-over study
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| Autores: | , , , , , , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2014 |
| Descripción: | Carrot, tomato and papaya represent important dietary sources of b-carotene and lycopene. The main objective of the present study was to compare the bioavailability of carotenoids from these food sources in healthy human subjects. A total of sixteen participants were recruited for a randomised cross-over study. Test meals containing raw carrots, tomatoes and papayas were adjusted to deliver an equal amount of b-carotene and lycopene. For the evaluation of bioavailability, TAG-rich lipoprotein (TRL) fractions containing newly absorbed carotenoids were analysed over 9·5 h after test meal consumption. The bioavailability of b-carotene from papayas was approximately three times higher than that from carrots and tomatoes, whereas differences in the bioavailability of b-carotene from carrots and tomatoes were insignificant. Retinyl esters appeared in the TRL fractions at a significantly higher concentration after the consumption of the papaya test meal. Similarly, lycopene was approximately 2·6 times more bioavailable from papayas than from tomatoes. Furthermore, the bioavailability of b-cryptoxanthin from papayas was shown to be 2·9 and 2·3 times higher than that of the other papaya carotenoids b-carotene and lycopene, respectively. The morphology of chromoplasts and the physical deposition form of carotenoids were hypothesised to play a major role in the differences observed in the bioavailability of carotenoids from the foods investigated. Particularly, the liquid-crystalline deposition of b-carotene and the storage of lycopene in very small crystalloids in papayas were found to be associated with their high bioavailability. In conclusion, papaya was shown to provide highly bioavailable b-carotene, b-cryptoxanthin and lycopene and may represent a readily available dietary source of provitamin A for reducing the incidence of vitamin A deficiencies in many subtropical and tropical developing countries. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/87699 |
| Acceso en línea: | https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/carotenoids-are-more-bioavailable-from-papaya-than-from-tomato-and-carrot-in-humans-a-randomised-crossover-study/E3B90993C4BAB71533718DCF755F392E https://hdl.handle.net/10669/87699 |
| Access Level: | acceso abierto |
| Palabra clave: | b-Carotene Lycopene b-Cryptoxanthin Bioavailability FITOQUÍMICA NUTRICIÓN |