Resistant dextrin vs inulin: two soluble fibers, opposite textures
Both add soluble fiber, but one stays invisible in a drink and the other builds a creamy texture. The viscosity is the whole decision.
The comparison
| Resistant dextrin | Inulin | |
|---|---|---|
| Source | Corn starch (dextrinized) | Chicory root |
| Fiber content | ≥85% TDF | ≥90% (typical) |
| Viscosity | Low — stays thin | Higher — can gel |
| Taste | Neutral | Very mild |
| Heat/acid stability | High | Moderate |
| Best role | Fiber in clear drinks, bakery | Fat replacement, creamy texture |
The texture decides
Resistant dextrin — the invisible fiber
Low viscosity and a neutral taste let resistant dextrin add a real fiber claim to a clear drink, juice or oat beverage without turning it thick or chalky. It also survives heat and acid, so it holds up through pasteurization and in bakery.
Inulin — the texture fiber
Inulin's long chains build body and a creamy, fat-like mouthfeel, which is why it turns up in low-fat yogurts, spreads and frozen desserts as a fat replacer. Trade-off: it can gel or cloud, so it is less at home in a crystal-clear beverage.
The short version
Clear drinks, juices and fiber-fortified bakery → resistant dextrin. Creamy, fat-reduced texture → inulin. We supply organic resistant dextrin (≥85% TDF, USDA + EU certified) for the low-viscosity side.