In bulk protein purification, a common first step to isolate proteins is precipitation with ammonium sulphate (NH 4) 2 SO 4. This is performed by adding increasing amounts of ammonium sulphate and collecting the different fractions of precipitate protein.rotein purification is a series of processes intended to isolate one or a few proteins from a complex mixture, usually cells, tissues or whole organisms.
Phenolic disinfectants are effective bactericides, fungicides, tuberculocides and virucides, but are ineffective against spore-forming bacteria such as Clostridium difficile. EPA-registered phenolic disinfectants are used to disinfect surface areas and non-critical medical devices.
Phenol, also known as phenolic acid, is an aromatic organic compound with the molecular formula C 6 H 5 OH. It is a white crystalline solid that is volatile. The molecule consists of a phenyl group (âC 6 H 5) bonded to a hydroxyl group (âOH). It is mildly acidic and requires careful handling due to its propensity to cause chemical burns.