Question

Bacteria growth is controlled by both sterilization and sanitization. Below list 3 physical sterilization methods, 3 chemical sterilization methods, and 3 chemical sanitization methods. Include the mechanism used by sanitization chemicals to control bacterial growth.

Answer 1

Sterilization include discontamination by the destruction of microorganisms including its spores through use of toxic chemicals, high temperature or through radiatiosns.

Three physical sterilization methods include 1) Boiling 2) Autoclaving 3) Pasteurization

Three chemical sterilization method include use of 1) Formaldehyde 2) Hydrogen peroxide 3) Glutaraldehyde

Sanitization reduces the number of microorganisms to a safe level by the destruction of the microbes on wounds, clothes, hard surfaces etc thus reducing the chances of getting sick.

Three most commonly used chemical sanitizers are 1)Chlorine based cleaners, 2)Quaternary ammonia 3) Iodine sanitizers

Mode of action of these chemical sanitizer is by dissolving the outer membrane of the bacteria and make them explode. These chemicals have water loving hydroxyl group which disrupts the protein and lipid molecules that make up the bacterial membrane and makes the outer coat falls apart resulting in lysis of the membrane