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 chemical peels are the most aggressive type of skin peels. A phenol peel is an effective remedy for severely sun damaged skin, coarse wrinkles, scars, and even pre-cancerous growths. Because a phenol peel uses carbolic acid to treat the skin, the procedure is not suitable for treating selected areas. It must be used on the full face.