In recent years, as life science, grease science and engineering science's rapid development, already is grease engineering research phytosterols one of important content. Plant sterol can restrain the absorption of cholesterol body, also have the disease-resistant poison, antitumor, anti-oxidant, anti-inflammatory, promote growth effects, and in medicine, food, feed, dyestuff industry widely application and research.

This experiment used as raw materials, in feet cottonseed oil catalyst (NaOH), under the action of preparation by methanol ester exchange reaction phytosterols; Inspects the alcohol oil ratio, catalyst, reaction temperature and reaction time on the influence of phytosterols yield; Determine the cottonseed oil the ester exchange reaction for reaction conditions: alcohol oil than of 0.8:1 quality, 3g, catalyst reaction temperature 65 ℃, reaction time -- 68 with acetic acid neutralization after 3h, to soft, add 1:1 ethyl acetate, calcium salt, 40 to 60 4g ℃ reaction temperature, filtering, dry were obtained product. Experimental use biodiesel production of affiliate products were when secondary reactions, reduced the waste of resources, reduce the emissions of pollutants, protect environment.