Ultrasonic-assisted rapid extraction of Cassia sieberiana D.C.: a Box-Behnken design process optimisation. - Saidu Jibril; Hasnah Mohd Sirat; Norazah Basar; Roswanira Abdul Wahab; Naji A. Mahat; Wan Mohd Nuzul Hakimi Wan Salleh (Int. J. Comput. Biol. Drug Des., 2021)