Physical Methods: Heat

There are TWO types of MICROBIAL CONTROL using HEAT, what are they?

1) Moist Heat 2) Dry Heat

_____ Heat is heat that uses water (i.e. liquid, vapor, steam).

Moist

___ Heat is heat that does not use water.

Dry

Moist heat is ____ effective and ______ than dry heat.

more, quicker

What are the METHODS of MOIST HEAT control?

1) Boiling Water 2) Pasteurization 3) Autoclave

______ ____ kills all vegetative cells (metabolically active not endospores)

Boiling water

____________ is used to disinfect liquids, typically those we drink; heated to hot but not boiling, then cooled to refrigeration temp; it kills most vegetative cells.

Pasteurization

____ - ___________ WILL sterilize cells.

ultra, pasteurization

___________ are used to functionally sterilize and are like giant pressure cookers; the steamer is held at high temperature above 121 degrees Celsius and is enough to destroy endospores.

Autoclaves

_________ are the most effective of moist heat methods.

Autoclaves

What are the METHODS of DRY HEAT control?

1) Incinerator 2) Hot-Air Oven

DRY heat methods can still ______ they just take ______ exposure.

sterilize, longer