Bioaccessibility and potential bioavailability of phenolic compounds from achenes as a new target for strawberry breeding programs
2018
Ariza, María Teresa | Reboredo-Rodríguez, Patricia | Cervantes, Lucía | Soria, Carmen | Martínez-Ferri, Elsa | González-Barreiro, Carmen | Cancho-Grande, Beatriz | Battino, Maurizio | Simal-Gándara, Jesús
Strawberry is a major natural source of bioactive compounds. Botanically, strawberry is an aggregate fruit consisting of a fleshy floral receptacle that bears a cluster of real dry fruits (achenes). Existing knowledge on the phenolic composition of achenes and its contribution to that of the whole fruit is limited. Also, the gastric and intestinal bioavailability of phenols is poorly known. In this work, a combination of spectrophotometric and HPLC–DAD methods was used to analyse the phenolic composition of whole fruits and achenes before and after in vitro digestion. Five different phenol families were identified. Also, achenes were found to contribute a sizeable fraction of phenolic acids and hydrolysable tannins in the whole fruit. Because the mere presence of phenolic compounds in a food matrix does not ensure their ready absorption and bioavailability, polyphenol potential bioavailability could be an effective selection criterion for strawberry breeding programs aimed at improving dietary healthiness.
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