Sustainable Food Packaging
packaging methods, material and sustainability
packaging methods, material and sustainability
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Lernkarten
Helium leak detection device
Gassing the packaging with helium through a septum
Locating cavities with helium detector
Test pore: > 5 - 10 micrometer
When is a packaging overdesigned?
If the functionality barrier higher than the product need
What is the problem with underpackaging?
Underpackaging cause food waste, so we produce more Carbon emissions
What define the packaging requirement?
The sensitivity of the product and the composition, the fat, protein and the carbohydrate content
What carrier gas is used by permeation analytics?
N2 with 3% H2
What happens if the gas-barrier does not fit?
For instance meat get in contact with microorganism, oxygen and can rotten in fact. Fish protective muscle are thin so that can rotten so easy.
How you pack meat?
Its depend on the packaging system, on the one hand we have vacuum packaging the old system and the MAP
Why c02 inside packaging?
It harms biological growth of microorganism
Why we don’t put in 100% co2?
1. It would lead to collapsing because it permeate 16x faster then nitrogen
2. Taste not good we don’t want negative impacts in case of taste
Why do we don’t store sunfloweroil in the fridge?
A liquids oxygen content can be much higher in a cold liquid then in a warm liquid.
Photooxidation can only happen, if light is present. How we can protect food in a transparent packaging?
We can have a transparent packaging and add UV filter to increase the shelf life
How we can buy a 30 days stored sausage in a transparent pack?
If we remove the oxygen in the atmosphere of the packaging, the photooxidation cant occur.
photoxidation need 2 % oxygen if we now have only 1% oxygen, we have no problem with coloration.
With 0% oxygen we have no coloration at all
What happen if we put green herbs into a sausage?
Decrease the storage time because of a photooxidation. Green substances are additional sensitizers
What can reduce the o2 in the packaging?
Reduce the headspace of the packaging.
Additives, migration!! and monomers are regulate and have to be considered!
Only the listed raw materials are allowed!!!
The overall global migration restricted to 10 mg/dm2 resp. 60 mg /kg
sum up all the monomer migrations and look are you below the 60mg/kg
Who is responsible for the food safety ?
the seller, but the seller protect them self with a document of complience from there suppliers
Potatoe crisps packaging?
blow up to protect the chips is filled up with nitrogen, the nitrogen permeate from in to outside a bit lower than o2 permeat inside so the blow is maintain over the storage time
Why do Maultaschen pull a vacuum?
because co2 goes out faster than o2 goes in
Packaging problems Examples
Too high permeation rates
• Delamination
• Strong thinning during thermoforming
• Storage condition are not considered
• Moisture is not considered (EVOH)
• Seal seam defects
Oxygen in Packaging
Advantages and Disadvantages
Pro:
Preservation of the metabolism
in fresh fruit / vegetables
Color preservation of fresh meat
growth of
anaerobic microorganisms
(toxin producers)
Cons:
• Degradation of nutritionally relevant
substances (vitamins, proteins, lipids)
• loss of taste
• discoloration
• growth of aerobic microorganisms,mold
• Production of toxins
Problem aspect light
pro and cons
pro
• bright salesroom
• transparent packaging
• contents should be clearly
visible (consumer acceptance)
cons
• light-catalyzed
• oxidation reactions
• photocatalytic autoxidation
• photosensitized oxidation of fat
• discoloration
Photocatalyzed) autoxidation and Photosensitized lipidoxidation. Whats the difference?
Photocatalyzed autoxidation is a reaction between fatty acids and UV light (more Energy, lower wave lengths)
Photosensitized lipidoxidation is a reaction between fatty acids and visible light (less Energy higher wavelengths)
Has Oxy-myoglobyn a problem with UV light?
Oxy-myoglobin shows a clear UV dependence (light-induced autoxidation)
How to pack fresh meat?
myoglobin
met- myoglobin
oxy- myoglobin
fresh dark red meat (without oxygen)-> myoglobin
Red meat color defined by O2 partial pressure Avoid prolonged storage at 5 mbar -> met- myoglobin
light red meat (with oxygen)-> oxy- myoglobin