Collagen or gelatin: What is the difference and what is each used for?

Collagen powder or gelatin – both sit side by side on the shelf, cost about the same, and are made from the same raw material. Nevertheless, they are not interchangeable. The difference determines whether your powder dissolves in cold water or turns into jelly.

What is the difference between collagen and gelatin?

Gelatin is processed collagen. Collagen hydrolysate is even further processed collagen. All three consist of the same protein – they differ only in how much the protein chains have been broken down.

Collagen is the structural protein in the connective tissue of animals and humans. In its native form, it is water-insoluble and cannot be drunk. It only becomes a usable food product through breakdown.

The sequence: native collagen → gelatin → collagen hydrolysate. With each step, the chains become shorter, solubility increases, and gelling ability decreases. At the end of the chain is a powder that dissolves clearly in cold water and no longer binds anything.

How is collagen turned into gelatin, and gelatin into hydrolysate?

Through two different processes. Gelatin is created through thermal digestion, collagen hydrolysate through additional enzymatic cleavage.

In the first step, the connective tissue – skin, bones, cattle hide – is pre-treated with acid or alkali and then extracted under heat. The triple helix of the collagen is dissolved in the process; what remains are long, but soluble, protein chains. This is gelatin. Exactly the same thing happens on a small scale when bone broth thickens in the refrigerator.

In the second step, these chains are further broken down enzymatically. The result is short-chain peptides that are soluble in water – unlike gelatin.^[1] They no longer gel and dissolve particularly well, even in cold drinks – at approximately 3 to 6 kDa, the peptides are significantly smaller than gelatin.^[2]

The names for this are interchangeable: collagen hydrolysate, collagen peptides, hydrolyzed collagen – they all refer to the same thing.

What does the Bloom value mean?

The Bloom value is the measure of the gelling strength of a gelatin. The higher the value, the less gelatin you need for the same firmness.^[3]

It is determined using a standard procedure: the force required to depress a plunger four millimeters into a gel of a defined concentration is measured.^[3]

Commercially available gelatins range between 80 and 280 Bloom. The standard classification is low-bloom (50–100), medium-bloom (100–200), and high-bloom (200–300).^[3] For aspics, meat jellies, and firm desserts, a high-bloom gelatin is the better choice because you need to use less of it.

There is no Bloom value for collagen hydrolysate. It does not gel – the metric would be irrelevant.

What do I use for what?

The rule of thumb is simple: if something needs to become firm, you need gelatin. If something only needs to dissolve, you need hydrolysate.

Gelatin is suitable for

• Panna cotta, mousse, creamy desserts, cake glaze
• Aspic, meat jelly, terrines
• Homemade gummy candies
• Warm dishes and drinks that require thickening

Collagen hydrolysate is suitable for

• Coffee, tea, water, juice – even cold
• Smoothies, yogurt, quark, porridge
• Daily intake, if you do not want it to affect the taste
• Everything that needs to remain liquid

The most common mistake in practice: stirring gelatin into a cold drink. It swells, clumps, and does not dissolve. Gelatin needs heat – it goes into solution from about 40 to 50 °C onwards,^[1] but should not be boiled: with increasing temperature and time, the gelling strength decreases measurably.^[4]

Can I substitute gelatin and collagen hydrolysate for each other?

In one direction yes, in the other no. Gelatin can be used in almost all places where hydrolysate is used – as long as the liquid is warm and you do not want it to gel in the refrigerator. The reverse does not work: collagen hydrolysate will never become firm, no matter how much you use.

So, if you only want to have one product in your cupboard and drink cold liquids regularly, choose hydrolysate. If you cook and bake, you cannot do without gelatin.

Is gelatin worse than collagen hydrolysate?

No, it is just different. Nutritionally, both are very similar because they consist of the same protein and provide the same amino acid profile – primarily glycine, proline, and hydroxyproline.

A difference in protein content is often claimed, which barely exists upon closer inspection. Commercially available gelatin contains around 88 percent protein, about 10 percent residual moisture, and 1 to 2 percent mineral salts. If you factor out the moisture, the protein content is 98 to 99 percent of the dry matter.^[5] Figures such as “84 to 90 percent” for gelatin and “97 percent” for collagen peptides are therefore comparing a wet basis with a dry basis. On the same reference basis, there is practically no difference.

Both lack the essential amino acid tryptophan – therefore, they are not considered complete proteins and are not a replacement for other protein sources, but rather a supplement.^[5]

The common claim that hydrolysate is "more bioavailable" deserves an honest perspective: the shorter peptides dissolve faster, but gelatin is also digested. Those who eat gelatin absorb the same building blocks – just one digestive step later.

What about the effects – skin, joints, hair?

Here we must be honest, even if it does not help sales: there are no authorized health claims for collagen in the EU. The consumer advice center notes that the effectiveness of collagen supplements is not proven and that statements such as "collagen smooths your skin" or "visibly reduces wrinkles" are prohibited for dietary supplements.^[6]

This is not a solitary opinion. In 2011, the European Food Safety Authority reviewed an application regarding collagen hydrolysate and joint health and concluded that a cause-and-effect relationship has not been proven.^[7] A systematic review with meta-analysis of randomized controlled trials from 2025 notes for the area of skin aging that there is currently no clinical evidence supporting the use of collagen supplements for prevention or treatment.^[8]

This applies equally to gelatin and hydrolysate. Anyone trying to sell you one over the other using efficacy claims is operating outside of what is legally permissible.

There is one authorized related statement, and it does not concern collagen itself, but Vitamin C: It contributes to normal collagen formation for the normal function of skin.^[9] This is why many manufacturers combine both – or one can simply take their collagen with a vitamin C-rich meal.

The sensible basis for a decision therefore remains the practical one: what consistency do you need, how do you want to consume it, what raw material would you like.

Where does bone broth stand in comparison?

Bone broth is the original path to the same substance. When bones and connective tissue are simmered for a long time, the collagen dissolves and becomes gelatin – that is why good broth thickens in the refrigerator.

The difference from the powder lies in composition and concentration. In addition to collagen, broth contains minerals, fat, and flavor compounds from the raw material, but generally less protein per serving – exactly how much depends heavily on the recipe and cooking time. It is a food with its own flavor, not a neutral powder for stirring in.

Those who want to specifically supplement collagen are more efficient using gelatin or hydrolysate. Those looking for a warm, savory meal component should choose broth. The two are not mutually exclusive.

What you should look for when buying

The same four points apply to both products:

1. Animal species. Does the package state which animal the raw material comes from? About 80 percent of the food-grade gelatin used in Europe comes from pork skins – and there is generally no requirement to declare the animal species.^[5]
2. Ingredient list. A good product has exactly one ingredient. Sweeteners, flavors, and anti-caking agents have no place in a collagen powder.
3. Origin and processing. Where does the raw material come from, where is it processed, where is it packaged?
4. Laboratory testing. Is it tested for heavy metals and microbiology, and are the reports publicly accessible?

For gelatin, the Bloom value is added – it tells you how much you need for a firm result.

Our product range

We carry both because both have their place.

Beef Gelatin Powder – pure beef food-grade gelatin, one ingredient, no blends. Raw material from pasture-raised cattle in Turkey, processing in Switzerland, halal-certified.

Collagen Hydrolysate and Halal Collagen Peptides – cold-soluble, neutral in taste, also single-ingredient. The halal collagen comes from Turkey, our regular hydrolysate from EU raw materials, processed in Switzerland and packaged in Germany.

All our collagen and gelatin powders are sold as food, not as dietary supplements. Each batch is tested for microbiology and heavy metals in an accredited German laboratory – the test reports are publicly accessible and can be assigned via the batch number on your package.

Two further articles in case you are more interested in the question of origin: Why the animal species is rarely stated on gelatin packages and Is collagen halal?

Sources

1. Gómez-Guillén, M. C.; Giménez, B.; López-Caballero, M. E.; Montero, M. P. (2011): Functional and bioactive properties of collagen and gelatin from alternative sources: A review. Food Hydrocolloids 25(8), 1813–1827. doi.org/10.1016/j.foodhyd.2011.02.007
2. León-López, A.; Morales-Peñaloza, A.; Martínez-Juárez, V. M.; Vargas-Torres, A.; Zeugolis, D. I.; Aguirre-Álvarez, G. (2019): Hydrolyzed Collagen – Sources and Applications. Molecules 24(22), 4031. doi.org/10.3390/molecules24224031 (PMID 31703345)
3. Bloomwert. In: Lexikon der Ernährung, Spektrum Akademischer Verlag. spektrum.de
4. Wang, Y.; Zhang, L.; Cao, G.; Li, Z.; Du, M. (2024): Effect of Heat Treatment on Gelatin Properties and the Construction of High Internal Phase Emulsions for 3D Printing. Foods 13(24), 4009. doi.org/10.3390/foods13244009
5. Rather, J. A. et al. (2022): A comprehensive review on gelatin: Understanding impact of the sources, extraction methods, and modifications on potential packaging applications. Food Packaging and Shelf Life 34, 100945. doi.org/10.1016/j.fpsl.2022.100945
6. Verbraucherzentrale Bundesverband (As of 16.01.2025): Kollagendrinks für die Schönheit – Beauty aus der Büchse? verbraucherzentrale.de
7. EFSA Panel on Dietetic Products, Nutrition and Allergies (2011): Scientific Opinion on the substantiation of a health claim related to collagen hydrolysate and maintenance of joints. EFSA Journal 9(7), 2291. doi.org/10.2903/j.efsa.2011.2291
8. Myung, S.-K.; Park, Y. (2025): Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. The American Journal of Medicine 138(9), 1264–1277. doi.org/10.1016/j.amjmed.2025.04.034 (PMID 40324552)
9. European Commission (2012): Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods. Consolidated version of 17.05.2021. eur-lex.europa.eu

Sources last checked on 17.09.2026.