Food Packaging

Question 1

___ packaging is in direct contact with food and needs to be foodsafe; ____ packaging can have printed material and can be made of recyclable material

Answer 1

primary; secondary

Question 2

what are the primary functions of food packaging?

Answer 2

preservation, protect against physical damage, chemicals, bio contamination; aid distribution, create sales appeal

Question 3

chips are surrounded by ___ not normal air, to prevent ____

Answer 3

nitrogen; oxidation

Question 4

examples of diff food pack materials?

Answer 4

paper, glass, metal, plastics, laminates, wood, cloth, wax, edible containers

Question 5

what are examples of edible containers?

Answer 5

ice cream cones, cabbage leaves, bread, taco bowl

Question 6

OTR stands for ____, WVTR is ____

Answer 6

oxygen transmission rate; water vapor transmission rate

Question 7

examples of mechanical properties of food packaging

Answer 7

film strength, weight

Question 8

recycling plastics follow the ___ coding system

Answer 8

resin

Question 9

how many types of recycling plastics?

Answer 9

7

Question 10

what are the 7 types of recycling plastics?

Answer 10

1) PETE/PET 2) HDPE 3) PVC 4)LDPE 5) PP 6) PS 7) other (mixed)

Question 11

what is PETE? What is it used for?

Answer 11

polyethylene terephthalate; used in soft drink/juice containers

Question 12

what does HDPE stand for? What is it used for?

Answer 12

High density polyethylene; milk jugs

Question 13

what does PVC stand for? what is it used for?

Answer 13

polyvinyl chloride; packaging films like saran wrap

Question 14

____ is used for solar water disinfection

Answer 14

PET

Question 15

what is LDPE? What is it used for?

Answer 15

low density PE; grocery bags

Question 16

what is pp? what is it used for?

Answer 16

polypropylene; yogurt containers

Question 17

what is PS? What used for?

Answer 17

polystyrene; cups and plates

Question 18

____ not good for barrier properties but is good for short term; it has lots of air in container to help with shape and support; can taste parts per billion of this

Answer 18

polystyrene

Question 19

what is MAP?

Answer 19

modified atmosphere packaging

Question 20

why do fresh meats include high oxygen?

Answer 20

to maintain bloom of myoglobin pigment

Question 21

plant hormone causing ripening

Answer 21

ethylene

Question 22

MAP for fruit and veg need consider:

Answer 22

humidity, o2, co2, ethylene, temp

Question 23

why fruit and veg need some oxygen?

Answer 23

don’t want switch to anaerobic resp/fermentation (pickling)

Question 24

how is controlled atm (CA) diff from MAP?

Answer 24

it actively monitors and changes atm around product

Question 25

example of CA?

Answer 25

apple storage

Question 26

active/smart packaging contains _____

Answer 26

oxygen scavengers (iron, ascorbate, glucose oxidase); temp sensors; anitmicrobial/antioxidant films

Question 27

purpose of microwave susceptors?

Answer 27

provide heating/browning

Question 28

why does 2 part tray system speed up heating?

Answer 28

condensation from steam to liquid (heat of condensation) has lots of energy associated, so transfer greater amount of heat than just submerging solid in liquid sauce

Question 29

self-heating containers use ___ reaction; same principle as ____

Answer 29

exothermic; hand warmers

Question 30

what are the 3 Ps of innovation?

Answer 30

product, package, process

Question 31

___% new brands fail, __% line extensions fail

Answer 31

72; 55