The document discusses edible coatings as a form of food packaging that protects and preserves food while being biodegradable and non-toxic. It outlines the composition, characteristics, application methods, and advantages of edible coatings compared to conventional packaging, emphasizing their role in food safety and environmental sustainability. Although not designed to fully replace traditional packaging, edible coatings can enhance food preservation and reduce environmental impact.

2. FSAT-5108. FOOD PACKAGING
EDIBLE COATINGS AS EDIBLE PACKAGING
B.Sc. (Hons). Food Science and Technology
Salal Abdul Rehman
(2020-24)
Spring-2022
INSTITUTE OF FOOD SCIENCE AND NUTRITION(IFSN)
UNIVERSITY OF SARGODHA, SARGODHA PAKISTAN

3. CONTENTS
• Edible coating
• Composition of edible coating
• Characteristics and Basic functions
• Methods to apply edible coating
• Applications of edible coating
• Edible coating as a primary packaging vs conventional synthetic
packaging
• Advantages of edible packaging
• Edible coating as an active packaging
• Conclusion
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4. EDIBLE COATING
Defined as intact, thin and transparent edible layer that protects food from
external factors or a seal which restricts the exchange of gases. These coatings
have a great role in food preservation, as they have ability to improve the
nutritional and overall quality of food.
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5. COMPOSITION OF EDIBLE COATING
Carbohydrates:
Starch, maltodextrin, carrageenan, alginate, pectin, chitosan and cellulose derivatives
such as methylcellulose and carboxymethyl cellulose.
Proteins:
Casein, wheat protein, whey protein, corn zein, keratin, gelatin , egg albumin and soy
proteins.
Lipids:
Waxes oil, fatty acids and resins.
Some minor components:
Polyols (glycerol), acid base compounds (lactic or acetic acid)
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6. CHARACTERISTICS AND BASIC FUNCTION
• Edible, biodegradable, non toxic and environment friendly.
• Serves as barrier to movement of solutes and O2 permeability.
• Can be used as vehicle for carrying functional additives.
• Nutritional value of food product can be increased by adding some nutrients
to edible coating.
• Aroma precursors into coating increased the flavor production.
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7. METHODS TO APPLY EDIBLE COATING
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8. 6

9. APPLICATIONS OF EDIBLE COATING
• Food preservation
• Barrier to solutes
• Encapsulation
• Use in multilayer food packaging
• Edible whey coating on multi-layered cardboard boxes
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10. 8
EDIBLE COATING AS PRIMARY PACKAGING VS
CONVENTIONAL SYNTHETIC PACKAGING

11. ADVANTAGES OF EDIBLE COATING
• Prevent moisture loss
• Provide gas barrier functions
• Inhibit the exchange of volatile components
• Vehicle for many functional compounds
• Keep the fresh produce safe
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12. 10
EDIBLE COATING AS ACTIVE PACKAGING

13. CONCLUSION
Although packaging was established in 18th century but it has made great
innovations. These innovative packaging solutions will definitely emphasize
more on food safety like delaying oxidation, controlling microbial growth,
sustainability and convenience. However edible films are not intended to
completely replace the conventional packaging, as they are used as an edible
primary packaging in combination with the secondary non-edible packaging to
increase the efficiency of food safety. The main advantage of using edible
packaging is they can be eaten with the food. Another benefit is their
contribution in decreasing the environmental pollution
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Thank
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