Current knowledge on Roselle polyphenols: Content, profile, and bioaccessibility
| Autor: | Y. Martínez-Meza, J. Pérez-Jiménez, R. Reynoso-Camacho |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Polyphenols are plant secondary metabolites that are reported to have several biological activities. Roselle (Hibiscus sabdariffa) exhibits a remarkable polyphenol content, with anthocyanins being the most common class of phenolic compounds, but other flavonoids and phenolic acids are also present. Moreover, polyphenols are present in roselle not only as an extractable fraction but also as nonextractable phenolic compounds, i.e., those with a high molecular weight or that are strongly associated with the cell wall. In vitro evaluation of the bioaccessibility of the phenolic compounds in roselle has shown that a significant fraction of these polyphenols would become solubilized in intestinal fluid, thereby potentially contributing to the beneficial effects observed after consuming this plant or extracts from this plant, mostly in preclinical studies. Interestingly, after decocting roselle calyces (the most common way to consume them), an important fraction of polyphenols remains in the discarded residue, which could be used in different applications. Further studies of the polyphenols in roselle are needed to understand the potential benefits of this plant, exploring the profile of polyphenols (particularly that of the nonextractable phenolic compounds), their metabolic fate after intake, and their associated health effects. These studies should include clinical trials. |
| Databáze: | OpenAIRE |
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