Table 2 Daily plan of MaPLE polyphenol-rich food products: 3 portions per day are scheduled. Legend: º Chocolate powder was dissolved in hot milk or water; *Green tea was prepared by solubilization of 200 mg of green tea extract in 200 ml of hot water. ⁺Renetta apple purée was prepared in controlled conditions and stored at − 18 °C.

From: Effect of a polyphenol-rich dietary pattern on intestinal permeability and gut and blood microbiomics in older subjects: study protocol of the MaPLE randomised controlled trial