Pasteurization & Pasteurizing Equipment: Louis pasture invents Pasteurization.Pasteurizing purpose: Pasteurization is a practiced in order to protect milk or other liquid, semi liquid foods and make it safe for human consumption and to improve the keeping quality of dairy products so that they will reach the consumer in better physical condition. It also helps to retain the good flavor of milk or other liquid, semi liquid foods over a longer period of time.Definition of pasteurization: Pasteurization is nothing but the killing of all pathogenic organisms by using proper temperature and time control. Principle of pasteurization: Heating the product to a predetermined temperature and holding it for a time sufficient o kill all or nearly all objectionable organisms which may present.Methods of pasteurization:(1) Holding system LTHT : 143F (61.7C) for 30 min. (2) High temperature and short time (HTST) system : 160F (71C) for 15 seconds.Materials used in constructing pasteurization:(1) 18-8 stainless steel(2) Glass lining and tinned copperTypes of pasteurization:(1) Plain batch type pasteurizer(2) Continuous type pasteurizer(3) Long-flow holder type pasteurizer(4) Flash or short time pasteurizer / High temp. short time pasteurizer(5) Plate type pasteurizer(6) Electric pasteurizer(7) Vacuum pasteurizer