Cleaning and Disinfection Flashcards
What are the two types of food soiling?
Organic
Inorganic
What are examples of Organic food soiling?
Food particles
Coffee grounds
Grease, dirt and pest droppings
What are examples of inorganic (non-biodegradable) soiling?
Water hardness (scale / rust)
Chemicals (minerals or detergents)
What are the benefits of cleaning?
Law compliance
Customer image
Pleasant and safe work environment
Prevents pests
Reduces contamination
Reduces microbial growth
Maintenance and performance if machinery
What are the 3 types hazards associated with cleaning?
Microbiological
Physical
Chemical
Examples of microbiological hazards when cleaning
Cross-contamination
Dust particles
Aerosols
Inadequate cleaning (contact times)
Examples of physical hazards when cleaning
Using inappropriate, worn and defective cleaning equipment
Using defective PPE
Examples of chemical hazards when cleaning
Wrong chemicals
Wrong concentrations
Failure to rinse
Incorrect storage (e.g. inside food containers)
What are the 3 forms energy is available in that can be used in cleaning?
Kinetic
Thermal
Chemical
Example of kinetic energy when cleaning
Physical (scrubbing, sweeping)
Mechanical (Machinery)
Turbulence (liquids, pressure washer etc)
What are examples of thermal energy when cleaning?
Hot water
Steam
What are examples of chemical energy when cleaning?
Detergents
What is a bactericide?
A substance that destroys bacteria
What is sterilisation?
A process that destroys all living organisms
What is a detergent?
A substance used to remove grease and dirt
What is a fungicide?
A substance that kills mould and fungi
What is disinfection?
The destruction of micro-organisms to a level that is not harmful to food or consumers
(Doesn’t usually affect spores)
What is a sanitizer?
A chemical combination that cleans and disinfects
What are the 6 basic stages of cleaning?
Pre-clean
Main clean
Intermediate rinse
Disinfection
Final rinse
Drying
What factors should be considered when determining the appropriate cleaning method?
Accessibility
Requirements of food safety standards
Type and mix of soils
Type and level of microbial contamination
Risk to food, people, equipment
Available resources
Effluent disposal system
List types of cleaning methods
Dishwashing
Soak clean
Manual cleaning
Wash down system
Foams or gels
Clean in place
Machine dishwashing
What does the effectiveness of cleaning depend on?
Choosing the correct chemical👨🔬
Applying the optimum temperature and concentrations 🌡️
Allowing it time to function ⏰
Using it with the correct equipment
What is the purpose of a cleaning schedule? ( 6 points)
Acts as a communication channel
Ensures consideration to area / item to be cleaned
Improves efficiency
Raises profile of cleaning
Co-ordinates effort when more than one person is responsible
Improves management control
What are key elements to be considered with a cleaning schedule?
Item
Person responsible
Time
Methods
Duration
Resources required
PPE
Validation/supervisory check
What are the advantages of colour coded cleaning equipment?
Prevents cross-contamination
