TABLE 02 - Microbial Growth Control Flashcards
Kills vegetative bacterial and fungal pathogens and many viruses within 10 minutes (Physical methods)
Boiling or flowing steam
Very effective method of sterilization; at about 15 psi of pressure (121°C), all vegetative cells and their endospores are killed in about 15 mins (Physical methods)
Autoclaving
Heat treatment for milk that kills all pathogens and most non-pathogens (Physical methods)
Pasteurization
Very effective method of sterilization; used for inoculating loops (Physical methods)
Direct flaming
Very effective method of sterilization; used for disposal of contaminated dressings, animal carcasses, and paper (Physical methods)
Incineration
Very effective method of sterilization but requires temperature of 170°C for about 2 hours; used for empty glassware (Physical methods)
Hot air sterilization
Removal of microbes by passing of a liquid or gas through a screenlike material (Physical methods)
Filtration
Has a bacteriostatic effect (Physical methods)
Refrigeration
An effective method for preserving microbial cultures, foods, and drugs (Physical methods)
Deep-freezing
Most effective method of long-term preservation of microbial cultures, food, and drugs (Physical methods)
Lyophilization
Preserves colors, flavors, nutrient values of fruit juices (Physical methods)
High pressure
Involving removing water from microbes; primarily bacteriostatic (Physical methods)
Desiccation
Results in loss of water from microbial cells (Physical methods)
Osmotic pressure
Used for sterilizing pharmaceuticals and medical and dental supplies (Physical methods)
Ionizing radiation
This radiation is not very penetrating (Physical methods)
Nonionizing radiation