2024. Optimization Parameters of Natural Deep Eutectic Solvent Based on Choline Chloride and Fructose for Extraction of Polyphenol from Jotang (Spilanthes acmella) Stem. Pharmaceutical and Biomedical Sciences Journal (PBSJ). 6, 1 (Jun. 2024), 7–13. DOI:https://doi.org/10.15408/pbsj.v6i1.39583.