Flashcards in Food Packaging and Processing Deck (66)
Controlled Atmosphere Storage is used commercially in the US for what food products?
Apples, pears, cabbage
Heating soda ash and sand can make this packaging material.
How is a 2 piece can different from a 3 piece can?
2 piece cans have no side seams, only a body and lid; 3 piece cans have side seam and consist of a body, lid, and bottom.
In packaging, the joining of two or more films with adhesive is called?
In packaging, what is the function of annealing?
To relieve stress from non-uniform cooling rates
In processing, what is meant by "commercial sterility"?
Peter Durand of England patented this important package in 1810.
What are the three stages in which a gas or vapor permeate through a polymer?
Sorption, Diffusion, and Desorption
What are three common defects in glass containers?
Bird-swings, spikes, wavy appearance
What are two organisms that can cause flat sour spoilage of canned foods?
Bacillus stearothermophilus, Bacillus coagulans
What are two processes used to make jars?
Press and blow, blow and blow
What colors of glass bottles have the highest and the lowest light transmittance?
Highest – clear/flint, lowest – brown
What do MAP and CAP stand for?
Modified Atmosphere Packaging and Controlled Atmosphere Packaging
What do the letters WVTR stand for?
Water vapor transmission rate
What does a headspace scavenger such as ascorbate do in a container?
What does CPET stand for?
Crystallized Polyethylene Terephthalate
What does IQF stand for?
Individually quick frozen
What enzyme activity is most commonly used to determine the adequacy of blanching vegetable for freezing to ensure stability during storage?
What general class of packaging material is used in aseptic brick packs and pringle cans?
What is another name for PVDC?
What is form, fill, and seal operation (FFS)?
An operation where there is a continuous process of forming the containers without deforming the packaging material, fill with product, and seal
What is the difference between thermoforming and FFS?
Thermoforming deforms the packaging material whereas FFS does not
What is the function of activated carbon or potassium permanganate in active food packaging?
What is the function of silica gel in active food packaging?
What is the process of lowering the temperature of water below its freezing point without crystallization?
Super-cooling or undercooling
What is thermoforming?
A process where containers are formed from a reel of packaging material by heating the plastics to the softening point and deforming it to the desired shape
What metals make up German silver?
Copper, silver, steel
What monomers are used to form PET?
Ethylene glycol and terephthalic acid
What packaging material has the best gas barrier?
EVOH (ethyl vinyl alcohol)