NOKKAEW, R., & PUNSUVON, V. (2013). Multistage Solvent Extraction for High Yield Oil and Phorbol Esters Removal from Thai Toxic Jatropha curcas Meal. Walailak Journal of Science and Technology (WJST), 12(4), 299–310. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/835