Polyphenolic content and biological properties of Avola almond (Prunus dulcis Mill. D.A. Webb) skin and its industrial byproducts - Smeriglio, A; Mandalari, G; Bisignano, C; Filocamo, A; Barreca, D; Bellocco, E; Trombetta, D (Ind Crops Prod, 2016)