Textured vegetable protein

Cross-reactivity

Case notes

"Vegetable" is doing a lot of work in this ingredient name. Textured vegetable protein is soy-derived, but nothing in the phrase says so, and a parent scanning a label for the word "soy" can read straight past it. It also appears as TVP, textured soy protein, or soy meat — three of those four names look like different ingredients even though they refer to the same thing. TVP in particular is easy to skim, because abbreviations tend to register as processing terms rather than allergen sources.

The protein side matters for families managing more than one legume. Textured vegetable protein carries storage proteins from two families in SleuthIt's dataset: Legumins, or 11S globulins, including Gly m 6 soy legumin, and Vicilins, the 7S globulins, including Gly m 5. Reactions in these families are usually described as moderate to severe, and the vicilin group is noted as capable of causing anaphylaxis. These are also the proteins behind documented legume cross-reactivity — Ara h 1 shares structural homology with Gly m 5, and Ara h 3 with Gly m 6, with roughly 5 to 10 percent of people allergic to peanut reacting to soy.

Practically, that means "textured vegetable protein" deserves the same pause as the word soy itself, especially in meat-substitute products and prepared foods where it turns up as a bulking protein. Logging the exact wording you saw on the package, rather than translating it to "soy" in your notes, makes patterns easier to spot later.