Supercritical and instrument on application its compound bioactive extraction

For decades, supercritical fluids have been considered as an alternative to other extraction methods. The main applications of supercritical fluid are the extraction of valuable bioactive compounds as flavorings, dyes and removal of undesirable compounds such as organic contaminants, toxins and pesticides. Carbon dioxide is the main solvent used in this method, especially when the target molecule is non-polar. Equipment used for extra critical fluid extraction usually includes an extraction solvent retainer (usually carbon dioxide), a pump to apply pressure to the fluid, an oven containing the extraction vessel, and a limiter to maintain high pressure inside the system. Due to the function of the oven and the pump, carbon dioxide changes from the liquid phase to the critical condition (relatively low critical temperature 31.1 ° C and low critical pressure 7.7 MPa). Lack or limited consumption of solvent leads to the production of solvent-free extract. The decompression phase in the supercritical fluid process reduces the number of operating units because it does not require the separation and purification phase. Low temperature operation throughout the process is suitable for heat sensitive bio composites.