Sustainable Food Packaging

packaging methods, material and sustainability

packaging methods, material and sustainability


M. B.
This flashcard set helps university-level learners improve their English, focusing on sustainable food packaging. The vocabulary flashcards cover key terms like myoglobin, autoxidation, and permeation, essential for understanding food preservation and packaging materials. The set also includes practical examples of packaging problems and solutions, making it ideal for students and professionals in food science or packaging engineering. With the platform's backward learning feature, users can practice translating both from and into English, enhancing their language skills in a practical context.
Cartes-fiches
144
Utilisateurs
8
Langue
Anglais
Catégorie
Anglais
Niveau
Université
Créé / Mis à jour
16.04.2022 / 11.05.2022

Cartes-fiches

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 

 

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