Extract‐rich in flavonoids from <scp><i>Hibiscus sabdariffa</i></scp> calyces: Optimizing microwave‐assisted extraction method and characterization through LC‐Q‐TOF‐MS analysisOluwaseun Ruth Alara, Siti Kholijah Abdul Mudalip, Abdurahman Hamid Nour et al.|Journal of Food Process Engineering|2019Cited by 26