Corn Derivatives List: The Corn Ingredient Finder

This corn derivatives list is built as a search tool, not a wall of text, so you can check one ingredient at a time. Type a name into the finder below, or filter by category and corn status, and each entry tells you whether it is always from corn, sometimes from corn, or not from corn at all.

How to use the corn ingredient finder

The table under this section does the heavy lifting. You can work it three ways:

• Search by ingredient. Start typing a name, such as dextrose or lecithin, and the list narrows as you go.
• Filter by category. Group entries by type, such as sweeteners, starches, acids, and thickeners, when you want to scan a whole class at once.
• Filter by corn status. Show only the ingredients that are always corn, only the maybes, or only the ones that never come from corn.

Pair it with our guide to reading food labels for hidden corn when you have a package in hand and need a fast decision.

What the three corn status labels mean

Every entry carries one of three marks:

• contains corn The ingredient is corn, or is made from corn nearly every time, such as cornstarch, corn syrup, and dextrose.
• may be corn The ingredient can be made from corn or from another crop, and the label rarely says which.
• corn-free The ingredient does not come from corn.

A mark reflects the usual U.S. supply, not a guarantee for one package. When an entry is marked corn-free, the ingredient itself is not from corn, though a shared production line could still be a separate question to raise with the maker.

Why so many ingredients are "may be corn"

The middle group exists because one ingredient can be built from more than one crop. Citric acid, lactic acid, and glucose can each start from corn, cane, wheat, or another sugar source, and a maker can switch feedstock without changing a word on the label. In the United States, corn is the cheapest and most available starch, so a maybe-corn ingredient is corn more often than not. That is why the safe move is to confirm with the manufacturer rather than to guess from the name alone.

This is also why the same product can be safe for years and then change. A maker that moves from corn to cassava starch, or back again, only updates the label if the ingredient name itself changes, and a feedstock swap rarely does. Re-checking a maybe-corn ingredient now and then is worth the minute it takes.

The tricky corn derivatives worth knowing

A small set of ingredients cause most of the confusion:

• Citric acid is produced by fermenting sugar with the mold Aspergillus niger, and corn glucose is a standard feedstock for that fermentation.
• Xanthan gum is made by bacteria fed a sugar that is frequently corn glucose.
• Maltodextrin is a processed starch, and in U.S. products that starch is usually corn.
• Dextrose is corn sugar, plain and simple, and turns up in salt, cured meat, and medications.
• Ascorbic acid (vitamin C) is most often made from D-glucose taken from corn starch.

None of these has to name corn on a label, which is why a search tool beats memory. Once your kitchen is stocked with products you have checked, the list gets shorter in daily life. See our corn-free products guide for swaps, and the corn allergy hub for the wider picture.