Practical answers and technical guidance on gelatin, collagen and food ingredient functionality.
The GMAP Knowledge Hub brings together foundation knowledge, technical explanations and practical guidance to help food manufacturers, product developers, food technologists and general readers better understand gelatin, collagen and their role in modern food systems.
Gelatin & Collagen
What is gelatin?
Gelatin is a natural protein derived from collagen-rich animal raw materials. It typically contains approximately 84–90% protein, around 2% mineral salts, with the balance consisting of water.
Gelatin is classified as a food rather than a food additive and therefore does not have an E number.
A clean-label ingredient
Produced in accordance with recognised food-quality and safety standards, gelatin supports the growing demand for clean-label products. It provides important functional properties without the need for many artificial or chemically modified additives.
Gelatin contains no preservatives or added ingredients and is naturally free from fat, cholesterol and uric acid compounds.
A highly versatile protein
Gelatin’s unique functional and nutritional properties make it suitable for a wide range of applications. It is used in foods and beverages, confectionery and culinary products, as well as in pharmaceutical and nutraceutical formulations where quality, consistency and performance are essential.
Collagen is the most abundant structural protein found in animals. It plays an important role in connective tissues such as skin, bones, tendons, cartilage and ligaments.
In ingredient form, collagen is used in a range of food, nutrition and health-related applications. It is also the source material from which gelatin and collagen peptides are produced. The way collagen is processed determines whether the final ingredient is gelatin, which forms gels, or collagen peptides, which are soluble and designed for nutritional applications.
Collagen is the original structural protein found in animal connective tissue.
Gelatin is produced when collagen is partially hydrolysed, changing its structure and making it useful as a functional food ingredient.
The key difference is performance. Gelatin can form gels, thicken liquids, bind water and improve texture. Collagen peptides are further hydrolysed into smaller protein fragments and are usually used for nutritional purposes because they dissolve easily and do not form a gel.
Through their technological and commercial uses, collagen peptides – also named collagen hydrolysates – are versatile in their applications and play an important role in modern health programs. Their purity and neutral taste make collagen peptides valuable ingredients for functional foodstuffs, nutraceutical applications or nutricosmetics. Just like gelatin, collagen peptides are pure collagenous proteins; however, they are not able to gel.
The primary areas of collagen applications are:
- Bone and joint health
- Beauty-from-Inside and topical cosmetics
- Weight control
- Healthy ageing
- High protein diets / Sports nutrition
- Animal health
Yes. Gelatin is a protein ingredient. It is made from collagen and contains amino acids that are characteristic of collagen-derived proteins.
Because gelatin is both a protein and a functional ingredient, it can contribute to formulation in more than one way. It can support texture, gel formation, water binding, mouthfeel and protein content, depending on the application.
Gelatin is used in many food and non-food applications. In food, it is commonly used in confectionery, jellies, desserts, dairy products, meat products, bakery fillings, capsules and nutritional products.
Its popularity comes from its combination of functional properties.
Gelatin can create clear gels, elastic textures, foam stability, moisture retention and smooth mouthfeel. These characteristics make it valuable across both traditional and modern food formulations.
In recent years, consumer demand for “plant-based” and “vegan” products has grown rapidly, reshaping the food, supplement, and beauty markets.
One trend that has emerged from this shift is so-called “vegan collagen.”
At first glance, “vegan collagen” might sound like an innovative, ethical alternative to animal-derived collagen peptides. However, the term is scientifically misleading, and consumers need to understand why.
Read our article on Why it’s not really collagen
Gelatin is useful because it performs several functions within one ingredient.
It can gel, thicken, bind water, stabilise foams, improve elasticity, enhance mouthfeel and support product structure.
For food manufacturers, this versatility can simplify formulation. Rather than providing only one effect, gelatin can contribute to texture, stability, processing performance and consumer experience at the same time.
Bloom strength is a measure of gel firmness. It indicates how strong a gelatin gel will be under defined test conditions.
In practical terms, a higher bloom gelatin generally forms a firmer gel, while a lower bloom gelatin forms a softer, more flexible gel.
Selecting the right bloom strength is important because different food applications require different levels of firmness, elasticity and texture.
Gelatin forms a gel when gelatin molecules dissolve in warm water and then partially reassemble as the solution cools. This creates a three-dimensional network that traps water inside the structure.
This gel network gives gelatin its characteristic texture.
The final result depends on factors such as gelatin concentration, bloom strength, temperature, pH, sugar, salts and other ingredients in the formulation.
Gelatin helps bind water by forming a protein network that can hold moisture within a food system.
This can improve juiciness, reduce moisture loss and support a smoother eating texture.
Water binding is especially important in applications where texture, yield, stability or shelf-life performance matter. In meat products, desserts and prepared foods, gelatin can help manage moisture and improve product consistency.
Gelatin can create textures ranging from soft and delicate to firm and elastic.
It can also improve smoothness, body and melt-in-the-mouth qualities.
The texture achieved depends on bloom strength, dosage, processing conditions and the overall formulation. This makes gelatin highly adaptable across different product categories, from confectionery and desserts to savoury and meat-based applications.
Gelatin is a protein-based gelling ingredient, while many other hydrocolloids are carbohydrate-based. This gives gelatin a distinctive combination of gel strength, elasticity, clarity, melt behaviour and mouthfeel.
One of gelatin’s most valued characteristics is its thermoreversible gelation. It can set when cooled and melt when warmed, which contributes to its unique sensory profile in many food applications.
Gelatin functionality
Collagen and nutrition
Collagen is used in food, beverage, nutrition and supplement applications.
It is often included in products designed for protein enrichment, active lifestyles, beauty-from-within positioning and general nutrition.
Collagen-derived ingredients may be used in powders, ready-to-drink beverages, gummies, bars, dairy products and functional foods.
The choice between gelatin and collagen peptides depends on whether the product needs texture functionality, nutritional solubility, or both.
Collagen peptides are used where easy solubility and protein fortification are important.
They can be added to hot or cold beverages, powdered drink mixes, nutrition bars, dairy products, soups, gummies and functional foods.
Because collagen peptides do not form a gel, they can be incorporated into products without significantly changing texture.
This makes them useful in formulations where protein contribution is required without thickening or setting.
Collagen is the original structural protein.
Gelatin is produced when collagen is partially hydrolysed.
Collagen peptides are produced when collagen or gelatin is hydrolysed further into smaller protein fragments.
These ingredients are related, but they behave differently. Gelatin is mainly valued for both protein content and functional properties such as gelling and texture. Collagen peptides are mainly valued for solubility and nutritional applications.
Yes. Collagen peptides are widely used in functional foods because they are soluble, easy to formulate and suitable for protein-enriched products.
They can be used in beverages, powders, bars, dairy-style products and gummies.
When developing functional foods, manufacturers need to consider taste, solubility, dosage, texture, processing conditions and the positioning of the finished product.
Collagen has a distinctive amino acid profile and comes from connective tissue proteins.
It is different from proteins such as whey, soy, pea or casein in composition, functionality and application.
Collagen peptides are often selected for solubility, neutral formulation behaviour and specific nutrition positioning. Gelatin, by contrast, is selected when protein functionality and texture performance are required.
Visit our Guide to Gelatin Preparation
For Food Manufacturers
Manufacturers choose gelatin based on the required function, final texture, processing conditions and product category.
Important considerations include bloom strength, viscosity, clarity, setting behaviour, gel elasticity and compatibility with other ingredients.
The right gelatin depends on the application.
A confectionery product, meat product, dairy dessert and capsule application may each require different gelatin characteristics.
Read the full article: How Manufacturers Choose the Right Gelatin
Bloom strength matters whenever gel firmness, elasticity and texture are important.
It helps manufacturers select gelatin that can deliver the required structure in the finished product.
Higher bloom gelatin may be selected for firmer gels or stronger structure, while lower bloom gelatin may be used where a softer texture or different processing behaviour is preferred.
In meat products, gelatin can help with water binding, texture, sliceability, juiciness and appearance.
It is commonly associated with applications such as jellied meats, pâtés, aspics, hams and prepared meat products.
Gelatin can help stabilise moisture and improve product structure. The appropriate gelatin type and dosage depend on the meat system, processing method and desired finished texture.
Read the article: Gelatin in Pâté and Jellied Meats: More Than Just Texture
In confectionery, gelatin is used to create elastic, chewy and clear gel textures. It is widely used in gummies, marshmallows, jellies and aerated sweets.
Its ability to form flexible gels and stabilise foam makes it especially valuable in confectionery applications.
Bloom strength, concentration and processing temperature all influence the final bite and texture.
Gelatin can help stabilise dairy products and desserts by improving body, texture and water control.
It is used in mousses, panna cotta, yoghurts, creams, jellies and chilled desserts.
It can create smooth, delicate textures and help prevent separation.
The final result depends on the recipe, processing method, cooling profile and interaction with dairy proteins, sugars and other ingredients.
A manufacturer should speak to a gelatin supplier when selecting bloom strength, troubleshooting texture issues, developing a new product, replacing an ingredient, improving stability or scaling up production.
Supplier guidance can help match gelatin type to the required application. This is especially important when formulation performance, processing efficiency and finished product consistency are critical.
Scientific Studies on Collagen Peptides
The benefits of collagen peptides for health and beauty have been confirmed by years of scientific research.
Studies consistently show that daily intake – even at levels of 10 grams or less – supports joint, bone, and skin health, with no adverse side effects reported.
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