The Industrial Applications of Eggs: Beyond the Kitchen

When we think about eggs, cooking is usually the first thing that comes to mind. But the industrial world tells a far more expansive story. From the production of life-saving vaccines to the finishing of fine leather goods, eggs and egg products are deeply embedded in manufacturing processes that most consumers never think about. Their unique combination of proteins, emulsifiers, and bioactive compounds makes them one of nature’s most industrially versatile raw materials – a fact that industries from pharmaceuticals to photography have recognized for well over a century.

The functional properties that drive industrial demand 🔗

What makes eggs so industrially useful comes down to their biochemistry. Egg whites are rich in proteins such as ovalbumin and lysozyme, while egg yolks contain lecithin, a phospholipid with powerful emulsifying properties. Together, these components give eggs the ability to bind ingredients, form stable emulsions, coagulate under heat, foam when whipped, and inhibit microbial growth. According to research published in Frontiers in Bioengineering and Biotechnology, egg components including lysozyme, avidin, IgY, lecithin, and bioactive peptides display anti-cancer, antihypertensive, anti-inflammatory, and antimicrobial activities – giving the egg a foothold in sectors well beyond food. These properties are not incidental; they are actively exploited by food technologists, chemists, and pharmaceutical scientists across the globe.

Eggs in the pharmaceutical industry 🔗

The pharmaceutical sector has long treated eggs as one of nature’s most valuable biological raw materials. The applications range from classic vaccine production to cutting-edge drug delivery systems.

Vaccine production 🔗

The most well-established pharmaceutical use of eggs is in influenza vaccine manufacturing. The process involves injecting a virus strain into a fertilized egg, allowing the virus to replicate inside the developing embryo, and then harvesting and purifying the virus-rich fluid for vaccine formulation. This egg-based method has underpinned flu vaccine production for decades and continues to be used at a global scale. Millions of fertilized eggs are used each production season, making the poultry industry a direct supplier to the global public health system.

Drug delivery and protein production 🔗

Egg yolk lecithin is a critical ingredient in pharmaceutical formulations. It is used as an emulsifier, stabilizer, and liposome-forming agent in intravenous injections, parenteral nutrition formulations, and topical drug products. The anesthetic agent propofol, for example, is formulated in an emulsion that contains egg yolk lecithin. Beyond lecithin, researchers have explored genetically engineered chickens that produce therapeutic proteins directly in their egg whites. Scientists at the University of Edinburgh reported the production of two clinically relevant human proteins – including interferon alpha 2a, used to treat hepatitis and certain cancers – using this method, with one clinical dose producible from just three eggs. While large-scale human drug manufacturing via this route is still in development, it represents a compelling frontier for affordable biopharmaceutical production.

Lysozyme as an antimicrobial agent 🔗

Lysozyme, derived from egg whites, is a well-characterized enzyme with established antimicrobial properties. It has been studied for its ability to inhibit bacterial carcinogenesis and enhance the effectiveness of anti-cancer drugs. Pharmaceutical and food preservation industries both make use of lysozyme, with the enzyme commercially extracted from egg whites at industrial scale.

Eggs in the food manufacturing industry 🔗

Beyond the home kitchen, eggs and processed egg products – liquid, dried, and frozen – are fundamental inputs in commercial food production. According to the USDA Food Safety and Inspection Service, of the 93.1 billion eggs consumed in 2022, nearly 30% were in the form of processed egg products, used by food manufacturers and the foodservice industry as ingredients in a wide range of products.

Bakery and confectionery products 🔗

In commercial baking, eggs serve multiple simultaneous roles. The proteins in egg whites, particularly ovalbumin, coagulate when heated, creating strong bonds between ingredients and providing structure. When whipped, eggs trap air and expand during baking, producing the lift seen in sponge cakes, soufflés, and muffins. Egg yolks contribute emulsification and richness, while also helping retain moisture. These combined functions make eggs irreplaceable in large-scale bakery operations that demand consistency in every batch. Ready meals, chocolate, and confectionery are among the sectors that consume the highest volumes of egg products in processed form.

Noodles and pasta 🔗

The pasta and noodle industry relies on egg products not just for flavor but for their structural contribution. Egg powder and liquid egg products are incorporated into industrial noodle production to improve texture, increase protein content, and develop the characteristic golden color consumers associate with quality pasta. The proteins in eggs help form a firm network that prevents noodles from turning mushy during cooking – a critical quality factor in both fresh and dried pasta products manufactured at scale.

Mayonnaise and emulsified dressings 🔗

Mayonnaise is perhaps the most recognized example of egg-based emulsification in food manufacturing. Egg yolks create stable oil-in-water emulsions that can withstand transportation, storage, and temperature variation without separating. Industrial food processors use liquid egg yolk products to ensure this stability at scale, producing consistent products across enormous production volumes. The same principle applies to a wide range of commercially produced sauces and dressings.

Ice cream and frozen desserts 🔗

Commercial ice cream manufacturers depend on egg yolk lecithin for its emulsifying and stabilizing effects. The lecithin helps create smooth, creamy textures while preventing the formation of ice crystals that would make frozen desserts coarse or grainy. Without this function, mass-produced ice cream would be far less stable and consistent during cold chain distribution.

Eggs in non-food industries 🔗

The industrial applications of eggs extend well beyond food and medicine. Several traditional and modern industries continue to rely on egg-derived materials for processes where synthetic alternatives are either less effective or less desirable.

Leather tanning 🔗

Eggs have been used in leather processing for centuries. In a method known as tawing, aluminium salts are used alongside binders such as egg yolk to treat animal hides, increasing their pliability, stretchability, and softness. This tawing process is known to enhance skin quality and produce a supple finish without the environmental hazards associated with chrome tanning. Beyond tawing, egg albumin also functions as a natural binder and softener in specialty leather treatments, contributing to high-quality leather goods with improved durability and texture.

Paint and coatings 🔗

The use of eggs in paint dates back to the Renaissance. Egg tempera – made by mixing pigment with egg yolk – was the dominant painting medium for European panel painters before oil paint became widespread. Cennino Cennini, a Quattrocento painter trained in the tradition of Giotto, is among the earliest known publishers of an egg tempera formula, instructing artists to mix colors with egg yolk in precise proportions. Today, egg proteins are also used in specialty industrial coatings for metal surfaces, where they help improve adhesion and provide some degree of corrosion resistance.

Photography 🔗

For roughly half a century, egg whites were at the heart of photographic printing. The albumen print process, introduced by French photographer Louis-Désiré Blanquart-Évrard around 1850, involved coating paper with egg white and salt and sensitizing it with silver nitrate. The resulting paper produced images of remarkable sharpness and tonal detail, making it the dominant photographic printing method from the mid-1850s to approximately 1895. In 1894, a major paper manufacturer in Dresden was reported to use around 60,000 fresh eggs per day to supply the global demand for albumen photographic paper – a remarkable testament to the scale of this application. Though silver gelatin eventually replaced the albumen process, the egg’s role in the development of modern photography is historically significant.

Cosmetics and personal care 🔗

The cosmeceutical industry has increasingly taken advantage of egg yolk lecithin’s beneficial effects, expanding its use across a wide range of skincare products. Lecithin and phospholipids from eggs are incorporated into creams, lotions, and gels for their excellent hydration, emulsification, and soothing properties. They are biocompatible with human skin and cause negligible irritation, making them highly suitable for cosmetic formulations. Egg yolk has been used in traditional cosmetics since the 11th century, with modern applications including shampoos, conditioners, moisturizers, and face masks that leverage egg-derived proteins and oils. Egg oil, derived from yolk, also functions as an emollient, antioxidant, and penetration enhancer in topical preparations. Meanwhile, eggshell membrane collagen is being explored for anti-aging formulations aimed at improving skin elasticity and reducing the appearance of wrinkles.

Waste valorization: making use of every part 🔗

Industrial egg processing also generates significant by-products – shells, membranes, and surplus yolks – that are finding new industrial uses. Egg processing waste is being utilized by textile and dye manufacturing industries, where proteins and pigments from egg waste can assist in the removal of toxic pollutants from industrial effluents. This approach creates a synergistic relationship between the egg processing and textile industries, reducing the environmental footprint of both. Eggshell calcium carbonate is also being studied for use in construction materials, pharmaceuticals, and agricultural soil conditioning. These efforts reflect a broader shift toward circular economy thinking within the food and industrial sectors.

The future of industrial egg applications 🔗

The industrial future of eggs looks increasingly sophisticated. Researchers are actively working on transgenic and functional eggs – hens fed with specific bioactive compounds that alter the nutritional or pharmaceutical profile of the eggs they produce. Genetically modified chickens are being developed to produce specific proteins, peptides, or molecules of pharmaceutical interest directly in the egg, including antibody-enriched eggs and insulin-producing eggs. These advances, combined with growing demand for natural and non-GMO ingredients in food and cosmetics, suggest that the economic and scientific value of eggs in industry will only continue to grow. Egg products processed under USDA inspection already meet stringent food safety standards, providing the quality assurance that industrial buyers require.

What do you think? As biotechnology advances the use of genetically engineered eggs for drug production, do you think this will change how we regulate and perceive eggs as both a food and an industrial raw material? And with so many non-food applications already established, should more effort be directed toward developing sustainable, egg-based alternatives to synthetic chemicals in industries like leather tanning and cosmetics?

References

1. https://en.wikipedia.org/wiki/Egg_lecithin
2. https://www.frontiersin.org/journals/bioengineering-and-biotechnology/articles/10.3389/fbioe.2021.738993/full
3. https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/eggs/egg-products-and-food-safety
4. https://www.labiotech.eu/trends-news/chicken-eggs-drug-production/
5. https://www.globalresourcesdirect.com/blog/uses-of-eggs-in-food-preparation-a-comprehensive-guide-for-food-manufacturers/
6. https://www.palamaticprocess.com/blog/food-feed/egg-product
7. https://en.wikipedia.org/wiki/Tanning_(leather)
8. https://steelhorseleather.com/blogs/the-journal/leather-tanning-process-explained
9. https://www.artsy.net/article/artsy-editorial-eggs-popular-material-painters-photographers
10. https://www.britannica.com/technology/albumen-paper
11. https://cool.culturalheritage.org/albumen/library/monographs/masters/introduction.html
12. https://en.wikipedia.org/wiki/Egg_oil
13. https://pmc.ncbi.nlm.nih.gov/articles/PMC8716877/