Rice dust is a material considered waste; however it contains 20.51% oil in that variety NIR 43. Oil extraction from rice dust by using supercritic fluids showed more advantages than traditional methods. Since it is a fluid solute dissolution is easier . By being a gas it allows an easy separation of matrix which results in a faster, more efficient and selective extraction of oil. To design this 4 liter equipment we tried in the lab rice dust at different pressures and temperatures in order to get better performance without altering essential characeristics.

Rice is one of the products with great economic importance in the southern region of our Country, mainly in the area of Corire, Arequipa region, which has successfully developed high yields mainly varieties IR 43 and Tacuarí. In order to take advantage of the products of husped rice, such as bran, we proposed an oil extraction technique by supercritical fluid which allows us to extract oil by means of high pressure and low temperatures. Initially a machine of supercritical fluids 100 ml capacity in the laboratory allowing the search for oil extraction parameters achieving yields close to 20% , then the design and construction of a machine of 04 liters of capacity with successful results. The research was conducted with support from FINCYT, Chapí Rice Mill Company and institutions like the Universidad Católica de Santa Maria and the Instítuto de Investigacion del Sur.