Term
| What is meant by microbial control? |
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Definition
| Reduction in numbers and activity |
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Term
Microbial control is completed by _______
microorganisms. By ______________ of microorganisms. ______ microbe from object. |
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Definition
| killing;inhibiting growth;removing |
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Term
| Substances that kill or inhibit growth of microorganisms are? |
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Definition
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Term
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Definition
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Term
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Definition
| the agent inhibits growth |
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Term
| Kills or removes all living cells |
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Definition
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Term
| reduces the total number of microbes (kills but not all) |
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Definition
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Term
| mild disinfectant agent suitable for use on skin surfaces (animate) |
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Definition
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Term
| reduction of the microbial population to levels considered safe by public health standards |
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Definition
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Term
| removal of microbes from a surface by scrubbing |
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Definition
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Term
| What is permanent loss of reproductive ability that is exponential (gradual) |
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Definition
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Term
The actions of microbial agents are:
Alteration of ___________ and ________.
Damage to ________ and ________. |
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Definition
cell walls;membranes
proteins;nucleic acids |
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Term
| The affect microbial agent have on a cell wall would cause the cell wall to... |
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Definition
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Term
| the damage antimicrobial agents have on cell membranes cause what to the membrane |
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Definition
| loss of ATP, production or photosynthesis |
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Term
| Damage to proteins by microbial agents to proteins cause what? |
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Definition
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Term
These are characteristics of what?
inexpensive
fast-acting
stable
harmless |
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Definition
| Ideal antimicrobial method |
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Term
All are characteristics of an ideal antimicrobial agent except:
denatures proteins
chemically stable
readily available
inexpensive
harmless |
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Definition
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Term
| Moist heat takes how long to sterilize? |
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Definition
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Term
| Dry heat takes how long to sterilize? |
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Definition
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Term
| The action of moist heat is.. |
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Definition
| denature proteins and destroy cell membrane and cell wall |
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Term
| The action of dry heat is... |
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Definition
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Term
Methods of moist heat include except:
boiling
autoclaving
pasteurization
oven sterilization |
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Definition
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Term
Methods of dry heat are:
complete incineration(1500 c) and ______ |
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Definition
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Term
rapid heating
rapid penetration of heat and
abundance of moisture are all advantages of what? |
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Definition
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Term
| Method of moist heat, boiling at what temp? |
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Definition
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Term
| does boiling at 100 degrees celcius kill endospores? |
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Definition
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Term
| method of moist heat: pasturization: temp is ___ for ____ min. |
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Definition
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Term
| Lowest temperature at which a microbial suspension is killed in 10 min is? |
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Definition
| Thermal death point (TDP) |
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Term
| Shortest time needed to kill all organisms in a suspension at a specified temperature under specific conditions is... |
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Definition
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Term
| The time required to reduce a population of microbes by 90% at a specified temperature and specified conditions is.. |
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Definition
| Decimal reduction time (D value) |
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Term
| Oven sterilization is at 1-2 hours at what degrees? |
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Definition
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Term
| what is the moist heat treatment milk? |
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Definition
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Term
| Is refrigeration and freezing microbicidal? |
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Definition
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Term
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Definition
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Term
| ordinary freezer temp ___ to ___ |
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Definition
| -10 to -20 degrees celcius |
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Term
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Definition
| 4-60 degrees celcius or 39-140 f |
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Term
| What has the action of:stops or slows growth and decreases metabolism? |
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Definition
| refrigerator and freezing |
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Term
| What has the action: inhibits growth disrupts metabolism |
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Definition
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Term
| drying, adding sugar and salt are methods of? |
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Definition
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Term
| describes the amount of water available for microbial growth |
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Definition
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Term
| minimal aw value for normal bacteria |
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Definition
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