“…However, the carbon element in biomass (carbohydrates and proteins) is not fully utilized with this method. A thermochemical conversion method, hydrothermal liquefaction that could convert carbon in biomass into hydrocarbons, was used by Shi et al (2023) to produce tiger nut biodiesel. The MgAl–layered double hydroxides was used to catalyzed the reaction, and the highest biodiesel yield of 38.7% was obtained.…”