Card 161
Question
What are two methods for producing a vacuum in a canned food?
Answer
Hot filling, thermal exhausting (steam in headspace)
Food Packaging
Discover Food Packaging: 308 flashcards with questions and answers.
- Subject
- Sciences / Chemistry
- Language of creation
- English
308 flashcards
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Cards in this set
Card 162
Question
What oxidizing agent is used to sterilize aseptic packaging material?
Answer
Hydrogen peroxide (also, but not oxidizing agents, include steam, iodophors, heat, irradiation)
Card 163
Question
What are substances that are incorporated into food products in low quantities from processing or packaging perspective?
Answer
Indirect additives
Card 164
Question
Name two plastic forming techniques.
Answer
Injection molding, extrusion blow molding, compression forming, vacuum forming
Card 165
Question
What is the term for packaging that changes color to indicate spoilage?
Answer
Intelligent or smart packaging
Card 166
Question
Why cannot polybutadiene be used as an enamel on two-piece cans, but can be used as such on three-piece cans?
Answer
It cannot hold up under the stresses of the manufacturing process for two-piece cans
Card 167
Question
Describe the meaning of a 307x 409 can.
Answer
It is 3 7/16 inches in diameter and 4 9/16 inches in height.
Card 168
Question
What is an EVOH film composed of?
Answer
It is a polymer of ethylene-vinyl-alcohol
Card 169
Question
What is the main disadvantage of glass packaging in the food industry?
Answer
It is heavy and fragile, increasing transport cost and risk of breakage.
Card 170
Question
Describe the general properties of the film used for packaging fresh red meat.
Answer
It needs to be transparent to show the meat's color, have good oxygen transmission to promote the bright red color of oxymyoglobin, and be a good barrier to water vapor to prevent moisture loss and darkening
Card 171
Question
Why is BPA being removed from plastic?
Answer
It's an estrogen mimic that negatively influence sex in fish and other organisms
Card 172
Question
Which country has the most widely accepted use of retortable pouches?
Answer
Japan
Card 173
Question
Why is AL layer used in retort pouches?
Answer
Keep out light and for gas impermeability
Card 174
Question
Would hydrodynamic failure in glass bottles occur more likely with ketchup or lemon juice?
Answer
Ketchup
Card 175
Question
The common brown grocery bag is made of what type of paper?
Answer
Kraft Paper
Card 176
Question
What are the layers of the bag-in-box bag?
Answer
Laminated film (outer)/aluminum foil/polyethylene (iner)
Card 177
Question
What type of packaging material is used for aseptic milk cartons?
Answer
Laminated multilayer packaging (paperboard, aluminum foil, and polyethylene).
Card 178
Question
What general class of packaging materials is used in aseptic brick packs and pringle cans?
Answer
Laminates (plastic/seal, aluminum foil/barrier, plastic, paper/structure, plastic/protect)
Card 179
Question
In packaging, the joining of two or more films with adhesive is called what?
Answer
Lamination
Card 180
Question
What polymer is more transparent in appearance, LDPE or HDPE?
Answer
LDPE
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