Biodiesel preparation, optimization, and fuel properties from non-edible feedstock, Datura stramonium L.

► Biodiesel has been produced from Datura stramonium L. oil (DSO). ► A two-step catalytic producing process was applied, and 87% FAME yield and more than 98 wt% FAME content were obtained. ► The fuel properties of DSO biodiesel were determined and evaluated compared with Jatropha curcas L. and beef tallow biodiesel. ► Datura stramonium L. was identified as a new and promising non-edible plant for biodiesel production.