Yuniati, Y.; Azmi, D. D.; Nurandriea, E.; Qadariyah, L.; Mahfud. Parametric Study and Characterization of Sappan Wood (Caesalpinia Sappan Linn) Natural Red Colorant Extract With Ultrasonic Assisted Extraction Method. ASEAN J. Chem. Eng. 2023, 23, 103-112.