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11 Cards in this Set
- Front
- Back
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Why use moist heat?
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Water conducts heat better than dry air. Gets hotter faster.
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Autoclave
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steam under pressure. Pressure raises the temp for better sterilization.
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Pasteurization
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Kills microbes in beverages and food.
Retains flavor and food value. |
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Boiling Water
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For disinfection, not steriliztion
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Incineration
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Ignites and reduces microbes to ashes and gas.
Used in labs- inoculation loops |
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Dry Oven
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used for heat-resistant items that do not sterilize well with moist heat.
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Desiccation
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dehydration of vegetative cells when directly exposed to normal room air
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Lyophilization
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combo of freezing and drying to preserve microorganisms and other cells in a viable state for many years.
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Radiation
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Gamma rays
X-rays Ultraviolet radiation |
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Ionizing Radiation
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Bad radiation. Causes ions to form.
For food and medical products |
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Gamma Rays, X-Rays and cathode rays go in which order from most penetrating to least penetrating?
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Gamma (most)
X-Rays (intermediate) Cathode (least penetrating) |
