Yuniati, Y., Azmi, D.D., Nurandriea, E., Qadariyah, L. and Mahfud 2023. Parametric Study and Characterization of Sappan Wood (Caesalpinia Sappan Linn) Natural Red Colorant Extract with Ultrasonic Assisted Extraction Method. ASEAN Journal of Chemical Engineering. 23, 1 (Jun. 2023), 103-112.