OPEN AND CLOSED SYSTEMS. A system is commonly defined as a group of interacting units or elements that have a common purpose. The units or elements of a system can be cogs, wires, people, computers, and so on. Systems are generally classified as open systems and closed systems and they can take the form of mechanical, biological, or social systems.
Ethyl oleate is a fatty acid ester formed by the condensation of oleic acid and ethanol.t also finds use as a lubricant and a plasticizer. Ethyl oleate is regulated as a food additive by the Food and Drug Administration under Food Additives Permitted for Direct Addition to Food for Human Consumption, 21CFR 172.515.
Ethyl oleate was used to prepare the oily phase of self-microemulsifying drug delivery system (SMEDDS) for tacrolimus (Tac) 1.sterification synthesis of ethyl oleate in solvent-free system catalyzed by lipase membrane from fermentation broth.