Sweet Protein vs Allulose: Which One Fits Your Formulation?
One is 1,000 times sweeter than sugar and used by the milligram. The other is a little less sweet than sugar and used by the spoonful. Here is how they compare, and why the best answer is often both.
Formulator's guide
Formulators often put sweet proteins and allulose on the same shortlist, because both taste clean and neither is an artificial sweetener. But they do opposite jobs. A sweet protein replaces sugar's sweetness. Allulose replaces sugar's body. Once you see that, the choice gets much easier.
A quick note on where we stand: we are UnSugar, and we supply a sweet protein. We do not sell allulose. This page tells you plainly where allulose is the better tool.
The 30-second version
- A sweet protein is a high-intensity sweetener. UnSugar Sweet Protein is 1,000 times sweeter than sugar, so you use a tiny amount.
- Allulose is a rare sugar, about 70% as sweet as sugar. You use it in amounts close to sugar.
- Sweet protein replaces sweetness. Allulose replaces bulk, browning and texture.
- In drinks and dairy, a sweet protein usually does the job alone or with your current sweetener.
- In baked goods, bars and frozen desserts, the two work well together.
What each one is
Sweet proteins are proteins that taste sweet. UnSugar Sweet Protein is based on brazzein, a sweet protein first found in the oubli fruit, and it is made by fermentation. Because it is so sweet, the amount in a recipe is very small.
Allulose is a rare sugar. It is found in small amounts in foods such as figs and raisins, and it is made at scale from other sugars. It looks, pours and bakes much like table sugar, but it is less sweet and has about 0.4 calories per gram.
Side by side
| Attribute | Sweet protein (UnSugar Sweet Protein) | Allulose |
|---|---|---|
| What it is | A sweet-tasting protein, based on brazzein | A rare sugar |
| Sweetness compared with sugar | 1,000 times | About 70% |
| How much you use | Milligrams. About one part replaces 1,000 parts of sugar | Grams. Close to the amount of sugar you take out |
| Replaces sweetness | Yes | Partly. On its own it leaves the product less sweet |
| Replaces bulk and texture | No | Yes |
| Browns in baking | No | Yes, and faster than sugar |
| Taste | Sugar-like, with no bitter aftertaste | Clean and sugar-like, a little less sweet |
| Formats | Liquid and powder | Syrup and crystals |
| Heat | Holds its sweetness up to about 98 °C (208 °F) | Stable in baking; watch for early browning |
| United States status | Self-affirmed GRAS for its intended use in food and beverage, and a GRAS Notice has been submitted to the U.S. FDA and assigned GRN 1338, with the no-questions response awaited | Used under GRAS notices that the FDA has not questioned |
| Other markets | Check each market before you formulate | Not authorized in the European Union; authorized in several other markets |
| Use level limits | Set by taste; very small amounts are needed | Large servings can cause digestive discomfort, so check the amount per serving |
Where a sweet protein is the better choice
- Beverages. Sugar in a drink is there mostly for sweetness. A sweet protein replaces it without adding grams of another ingredient.
- Flavored milk, yogurt and dairy drinks. The dairy already brings the body, so you can lean on the sweet protein. Our reduced-sugar chocolate milk starter formulation targets up to 90% less added sugar.
- When cost in use matters. Replacing sugar gram for gram with a bulk sweetener adds cost to every unit. A high-intensity sweetener is used at about one part per thousand.
- When you sell in more than one market. Allulose is not authorized everywhere. Check the status of every ingredient in every market you plan to sell in.
- When serving size is large. A sweet protein is used in such small amounts that serving-size limits on bulk sweeteners do not come into it.
Where allulose is the better choice
- Cookies, cakes and pastries. These need sugar's bulk and browning. A sweet protein cannot provide either.
- Bars and chewy snacks. Allulose syrup helps bind and keeps texture soft.
- Ice cream and frozen desserts. Sugars keep frozen products soft enough to scoop. A sweet protein does not do that job.
- Caramel and confectionery. Anything that depends on cooking sugar needs a sugar-like ingredient.
Why many formulators use both
Allulose solves the structure problem but leaves a sweetness gap, because it is only about 70% as sweet as sugar. Adding more allulose to close the gap adds cost and grams per serving. A sweet protein closes the same gap with a few milligrams.
A simple illustration
Replace 100 g of sugar with 100 g of allulose and you get the sweetness of about 70 g of sugar. The missing sweetness is worth about 30 g of sugar. At 1,000 times the sweetness of sugar, that is about 30 mg of sweet protein.
This is arithmetic, not a recipe. Sweetness does not always add up in a straight line, so confirm the amounts in your own product.
The pairing also works the other way. In a beverage sweetened mainly with a sweet protein, a small amount of allulose can add the body that sugar used to give.
What to check on the label
Label rules differ for the two ingredients, and they change. Three points to raise with your regulatory team:
- Allulose and the Nutrition Facts panel. Under FDA guidance issued in 2020, allulose can be left out of Total Sugars and Added Sugars and counted at 0.4 calories per gram. It still counts toward Total Carbohydrate. This is guidance, not a regulation, so confirm how it applies to any claim you plan to make.
- How each ingredient is declared. Ask each supplier for the ingredient declaration and supporting documents for your intended use.
- Every market you sell in. An ingredient accepted in the United States may not be authorized elsewhere.
How to test them fairly
- Start from your full-sugar control. That is your baseline.
- Build three versions. Sweet protein with your current sweetener, allulose alone, and allulose with sweet protein.
- Match the sweetness. Bring every version to the same sweetness as the control, in the real product.
- Taste blind. Score the first bite or sip, 10 seconds and 60 seconds.
- Compare cost in use. Compare grams per serving too, then check again after your process and after storage.
Quick answers
What is the difference between a sweet protein and allulose? A sweet protein is a high-intensity sweetener: it is many times sweeter than sugar and used in tiny amounts to replace sweetness. Allulose is a rare sugar that is about 70% as sweet as sugar and is used in amounts close to sugar to replace bulk, browning and texture.
Is a sweet protein sweeter than allulose? Yes, by a wide margin. UnSugar Sweet Protein is 1,000 times sweeter than sugar. Allulose is about 70% as sweet as sugar.
Can I use a sweet protein and allulose together? Yes. Allulose provides bulk and browning, and a sweet protein tops up the sweetness that allulose lacks. The pairing is useful in baked goods, bars and frozen desserts.
Can a sweet protein replace allulose in baking? Not on its own. Baked goods need the bulk and browning that a sugar-like ingredient provides. A sweet protein replaces sweetness, so in baking it is used alongside a bulk ingredient.
Which is better for beverages, a sweet protein or allulose? In most beverages sugar is there mainly for sweetness, so a high-intensity sweetener such as a sweet protein is the usual starting point. A small amount of allulose can be added if the drink needs more body.
Is allulose allowed everywhere? No. Allulose is used in the United States and several other markets, but it is not authorized in the European Union. Check the status of every ingredient in each market before you formulate.
Want to try the pairing?
Tell us your product and what you use today. We will send liquid and powder samples of UnSugar Sweet Protein, the documents your team needs, and a starting formulation for your category.
Request samples: goUnSugar.com/request-samples. Prefer to talk first? Talk to a specialist or email sales@goUnSugar.com
More comparisons: sweet protein vs stevia · sweet protein vs monk fruit · sweet protein ingredients compared · sugar reduction ingredients guide
About UnSugar. UnSugar Sweet Protein is a sweet-protein ingredient that helps US food and beverage teams cut sugar while keeping the taste. It is 1,000 times sweeter than sugar, replaces 60 to 90% of the sugar in suitable formulations, delivers a sugar-like taste with no bitter aftertaste, and works alongside existing sweeteners. Learn more at goUnSugar.com.
Sources: US Food and Drug Administration, "Aspartame and Other Sweeteners in Food" · US Food and Drug Administration, "The Declaration of Allulose and Calories from Allulose on Nutrition and Supplement Facts Labels: Guidance for Industry"
This article is general information for food and beverage teams. It does not describe or refer to any other company's products. UnSugar makes no health, medical or glycemic claims for UnSugar Sweet Protein. Sugar-reduction ranges are typical starting points in suitable formulations, not guarantees. Confirm label wording and regulatory status for your own product and markets.
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