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Corn
Corn, cornstarch, corn syrup, dextrose
Modified food starch
Most commonly corn-derived.
"Starch" (without a source qualifier)
Most commonly corn-derived.
Maltodextrin
Most commonly corn-derived in North America.
Generic "vegetable oil" (without a named source)
Corn oil is also a common base for industrial vegetable oil formulations. Corn-avoiders should treat bare vegetable oil as ambiguous.