Lesson 13: Comtrol of Microorganisms Flashcards
are ubiquitous and many microorganisms are associated eith undesirable consequences
microbes
microorganisms are controlled either by physical agents
temperature
dessication
osmotic pressure
radiation
filtration
chemical agents
disinfectants
antiseptics
antibiotics
chemotherapeutic antimicrobials chemicals
a process which an article is freed of all living microorganisms
sterilization
any material that has been subjected to the above process
sterile
a chemical agent that is used to perform sterilization because of their ability to destroy spores
sterilants
also called a microbicide. any chemical agent that kills pathogenic microorganism
germicide
use of a chemical agent that destroys pr removes all pathogenic organisms
disinfections
growth of microorganisms in the body
sepsis
practice the prevents the entry of infectious agents into sterile tissue
asepsis
chemical agents applied directly to the exposed bodysurfaces
antiseptic
cleansing technique that mechanically removes microorganisms
sanitization
compound that is used to perform sanitization
sanitizer
process usually involves scrubbing the skin or immersing it in chemicals
degerming/antisepsis
methods of controlling microorganisms
sterilization
disinfection
antimicrobials
STERILIZATION classified into;
physical and chemical methods
physical methods of sterilization
sunlight
heat
filtration
radiations
two types of sterilization
sterilization by moist heat and sterilization by dry heat
sterilization by moist heat
occurs in the form of hot water, boiling water or steam
sterilization by dry heat
makes use of air with a low moisture
classification of moist heat
° temperature below 100°C (pasteurization)
° boiling
° pasteurization inactivates most viruses
° intermittent sterilization
intermittent sterilization
to sterilize heat-sensitive culture media
