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Resistant potato starch

Resistant potato starch suppliers and sourcing guide

Resistant potato starch is native, uncooked potato starch, which has large granules with a crystalline structure that resists digestion while it stays raw. It is made by grinding potatoes, washing the starch out of the pulp, then refining and drying it at low temperature so the granules do not swell. Heating it above its gelatinization temperature, roughly 60 to 65 °C, turns it into ordinary digestible starch, so it is used in cold or lightly heated products.

See suppliersWhat to ask for on the COA
Category
Fibers
Also known as
raw potato starch · unmodified potato starch · native potato starch · Solanum tuberosum starch
Facts checked
November 2026

Forms and grades of resistant potato starch

Suppliers sell different products under the same name. Specify the one you need.

  • Native potato starch

    Food-grade unmodified potato starch, the form sold for resistant starch use.

  • Organic

    From organic potatoes under organic certification.

  • Supplement-grade powders

    Native potato starch packed for supplement use, sometimes with a stated resistant starch content.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Resistant starch content
Resistant starch by AOAC 2002.02 (McCleary), which measures starch that resists amylase digestion.
Moisture
Loss on drying; native potato starch typically holds around 18 to 20% water.
Gelatinization check
Microscopy or a viscosity profile showing intact, ungelatinized granules.
Ash, protein and pH
Purity checks for food-grade starch.
Sulfur dioxide
Residual sulfite, if the process uses it.
Microbiology
Total plate count, yeast and mold, coliforms or Enterobacteriaceae, E. coli and Salmonella.

Storage, lots and expiry

Storage and shelf life

Keep the starch in sealed bags in a cool, dry place away from odors and pests. It must not be exposed to heat and moisture together, which can gelatinize granules. Suppliers set a best-before date for unopened bags.

Lots and expiry dates

Resistant starch content depends on keeping granules intact through drying, so record the resistant starch result from each COA if your product states it. Check that the lot is native, not pregelatinized or modified.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

  • FDA's Substances Added to Food inventory lists potato starch with technical effects including formulation aid, stabilizer or thickener, and texturizer.

    Source: hfpappexternal.fda.gov (opens in a new tab)

  • FDA's dietary fiber Q&A names high amylose starch (resistant starch 2) among the non-digestible carbohydrates it intends to propose adding to the dietary fiber definition; native potato starch is not named there.

    Source: fda.gov (opens in a new tab)

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Resistant potato starch suppliers

Manufacturers and distributors whose own websites say they sell it.

We are checking resistant potato starch suppliers now

Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.

Sell resistant potato starch? Request a listing

Frequently asked questions

What forms of resistant potato starch can brands buy?

Common forms include native potato starch, organic and supplement-grade powders. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for resistant potato starch include?

Expect resistant starch content, moisture, gelatinization check, ash, protein and pH, sulfur dioxide and microbiology, each with its method, specification and result for that lot.

How should resistant potato starch be stored?

Keep the starch in sealed bags in a cool, dry place away from odors and pests. It must not be exposed to heat and moisture together, which can gelatinize granules. Suppliers set a best-before date for unopened bags.

What is the regulatory status of resistant potato starch?

FDA's Substances Added to Food inventory lists potato starch with technical effects including formulation aid, stabilizer or thickener, and texturizer. FDA's dietary fiber Q&A names high amylose starch (resistant starch 2) among the non-digestible carbohydrates it intends to propose adding to the dietary fiber definition; native potato starch is not named there.

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