VONGDETH, K., CHEN, M., KEOBOUNTHAM, P., KHANTHAVONG, S., LIU, S. and JIANG, C. 2026. The Extraction of Essential Oil from Kaffir Lime Peel via Ultrasonic–Assisted Extraction. Souphanouvong University Journal Multidisciplinary Research and Development . 12, 03 (Oct. 2026), 273–281. DOI:https://doi.org/10.69692/SUJMRD1203273.