Glutaraldehyde - used to sterilize surgical instruments if equipment for heat sterilization is not readily available. Crystal violet blocks cell wall synthesis. It can be used to treat yeast infections. Food Preservation A. Temperature - Environmental factor most often used to preserve food. Canning is the oldest method.
Refrigeration is low enough to stop the growth of most microbes.
1 of this handout for more info. D. Chemicals - Various chemical preservatives are added to commercially prepared foods. 2. sorbic acid - antifungal agent added to soft drinks, salad dressings, cheeses. Return to Chp.