Bioactive compounds and antioxidant activities in the agro-industrial residues of acerola (Malpighia emarginata L.), guava (Psidium guajava L.), genipap (Genipa americana L.) and umbu (Spondias tuberosa L.) fruits assisted by ultrasonic or shaker extraction

Nayjara Carvalho Gualberto, Christean Santos de Oliveira, Juliete Pedreira Nogueira, Mônica Silva de Jesus, Hannah Caroline Santos Araujo, Murugan Rajan, Maria Terezinha Santos Leite Neta, Narendra Narain