Sterile Dosage Forms & Biologics Flashcards
Means the destruction of all living organisms and their spores or their complete removal from any preparation
sterilization
Steam under pressure in an autoclave
Steam/Moist Heat Sterilization
MOA of Steam/Moist Heat Sterilization
Denaturation and coagulation
p, time, and temp required for Steam/Moist Heat Sterilization
10 lb pressure for 30 mins → 115.5 C
15 lb pressure for 20 mins →121.5 C
20 lb pressure for 15 mins →126.5 C
commonly used for moist heat sterilization
Autoclave
heat-stable materials used for Moist heat Sterilization
Bulk solutions
Glassware
Medical devices
Surgical dressings
Not for oils, fats, oleaginous preparations
Dehydration followed by slow oxidation
Dry Heat Sterilization
temperature and time required for Dry Heat Sterilization
160°C for 120 minutes
150-170°C for not less than 2 hours
heat-stable materials which cannot be sterilized by moist heat
Fixed oils, glycerin, various petroleum products,
Glassware
Medical devices, instruments
Non-thermal method based on the removal of microorganisms by adsorption on filter medium
Sterilization by Filtration
Millipore filter
14 to 0.025 um
RBC Millipore filter
6.5 um
smallest bacteria Millipore filter
0.2 um
poliovirus Millipore filter
0.025 um
usually consist of fritted glass or unglazed porcelain-substances that trap particles in channels.
Depth filter
Particulate filter remove particles of glass, plastic, rubber, and other contaminants
Screen filter
which may be either particulate or microbial, are in-line filters used to remove particulates or microorganisms from an intravenous solution before infusion
Final Filter
filter for Cellulosic materials (acetate, nitrates, fluorocarbonate, acrylic polymers, polyester, PVC, vinyl, nylon, polytef)
Membrane filter
examples of cellulosic materials
acetate, nitrates, fluorocarbonate, acrylic polymers, polyester, PVC, vinyl, nylon, polytef
In this method, ethylene oxide is generally used in combination with heat and moisture
Gas Sterilization
used to sterilize surfaces and porous materials (e.g., surgical dressings) that other sterilization methods may damage.
Gas Sterilization
Gas Sterilization is Affected by
time, temperature, gas concentration, humidity
is suitable for the industrial sterilization of contents in sealed packages that cannot be exposed to heat (e.g., prepackaged surgical components and some ophthalmic ointments).
Radioactive sterilization
This technique involves irradiation causing cellular destruction
Radioactive sterilization