Moreover, different results were found for the supercritical methanol transesterification of soybean oil: He et al. [39] obtained a yield of 76% in 25 min at 300 C and a molar ratio of 40:1, and Olivares-Carrillo and Quesada-Medina [42] reached a yield of 87.7% after 75 min at 325 C and a molar ratio of 43:1