Transcript Food Processing

Food Processing
Standard: 19.0 Describe Food Safety and
Processing Practices
Measurement Criteria:19.2 Describe foodprocessing practices
What is food processing?
• Techniques used to slow deterioration and
allow people to enjoy foods in a variety of
forms around the year and around the
globe.
• Food processing turns raw agricultural
product into attractive and consumable
food.
What is the importance of food
processing to human health?
• increases variety
• increases convenience
• improves quality of food
What are five food-processing
methods?
• Fermentation - Production of CO2 through anaerobic
respiration, also produces lactic acid alcohol in the
process.
• Canning - Sterilize food by getting it to a temperature of
212-250 F, then putting it into airtight containers
• Dehydration - Lowers moisture content to inhibit growth
of microorganisms
• Irradiation - Uses gamma rays to kill insects, bacteria,
fungi, etc. in food products.
• Blanching - Briefly scald food to inactivate enzymes that
cause undesirable changes.
Method- Fermentation
• Advantages
– Improves taste
– Adds value to crops,
such as cucumber
• Disadvantages
– Rather lengthy
process in comparison
to other food
processing
techniques.
Method- Canning
• Advantages
– Increases shelf life
– 2 years is considered
normal shelf life
• Disadvantages
– Weight of product
– Requires specially
treated metal cans or
appropriate glass jars.
Method-Dehydration
• Advantages
– Increases shelf life up
to 2 years
– Lighter weight
– Lower volume
• Disadvantages
– Changes taste and
texture of food
– Typically requires
preparation to
reconstitute food.
Method-Irradiation
• Advantage
– Gamma rays pass
through without
heating or changing it,
therefore no heat
sensitive nutrients are
lost in the process
• Disadvantages
– High cost
– Perception of
irradiation
Method-Blanching
• Advantage
– Improves taste
– Increases availability
of out of season foods
• Disadvantage
– Storage limits
• Fruits & veggies 1 year
• Meat 3-6 months
• Freezing temperatures
required for storage