The spelling of the phrase "sterilization by steam under pressure" is rather straightforward when broken down phonetically using the International Phonetic Alphabet (IPA). The word "sterilization" is pronounced as /ˌsterəlaɪˈzeɪʃən/, with emphasis on the second syllable. "Steam" is pronounced as /stiːm/, with a long "e" sound and an emphasis on the first syllable. "Under" is pronounced as /ˈʌndər/, with emphasis on the first syllable, while "pressure" is pronounced as /ˈpreʃər/, with a soft "sh" sound and emphasis on the second syllable.
Sterilization by steam under pressure is a method of removing or destroying all microorganisms, including bacteria, viruses, fungi, and spores, from objects, surfaces, or substances using pressurized steam. This technique is widely employed in various fields such as healthcare, pharmaceuticals, laboratories, and food industry to ensure the elimination of potential pathogens and achieve hygienic conditions.
The process involves subjecting the items to be sterilized to high-pressure saturated steam at a specific temperature and duration. The steam acts as a vehicle for heat transfer, which penetrates the materials and denatures the proteins and enzymes of microorganisms, thereby causing their death or inactivation.
This method offers several advantages over other means of sterilization. It is a highly effective and reliable technique, capable of achieving sterilization levels of up to 99.9999% when performed correctly. Furthermore, it is non-toxic, environmentally friendly, and does not leave any residue or chemical by-products on the sterilized items. Sterilization by steam under pressure can be implemented using autoclaves, which are specially designed chambers that can withstand the high temperature and pressure required for sterilization.
However, it is important to note that not all materials or equipment can withstand the harsh conditions of sterilization by steam under pressure. Heat-sensitive items, such as plastics, rubber, certain electronic components, and delicate instruments may be damaged or destroyed during the process. Therefore, it is crucial to carefully select appropriate sterilization methods for each specific application to ensure optimal results and preservation of the sterilized materials.
S. effected by exposure to the action of superheated steam in an autoclave.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.