Claim: A peanut powder product contains 55% protein. Verdict: Unverifiable — it depends entirely on which product you mean.

The claim is that a peanut powder product contains 55% protein. The verdict is unverifiable: the figure is neither clearly false nor clearly true, because it depends entirely on the specific product and how it was processed — information the claim does not provide.

The strongest evidence against treating this as a universal fact comes from USDA FoodData Central, which lists powdered peanut butter products (the PB2 type, the most widely sold 'peanut powder' on consumer shelves) at roughly 14–16 grams of protein per 100 grams — barely a quarter of the claimed 55%. These products retain significant fat and carbohydrate, which dilutes the protein share. If someone is buying a mainstream peanut powder and being told it is 55% protein, that claim is flatly wrong by a factor of roughly three.

The steelman version of the claim is real, but narrow. According to USDA FoodData Central data for defatted peanut flour, heavy fat removal pushes protein content to approximately 52–53%, making 55% plausible but still above what that entry confirms. Research published in the Journal of Food Science (Zhao et al., 2011) found that peanut protein concentrates produced by aqueous extraction can reach 55–65% protein on a dry-weight basis. A review in Food Chemistry (Yu et al., 2007) places defatted peanut meal at 45–55% crude protein, explicitly calling 55% the upper bound of a realistic range. So the figure is achievable — but only for a specific, heavily processed concentrate or isolate, not for anything reasonably called a standard peanut powder.

The Codex Alimentarius standard for peanut products (CXS 200-1995) reinforces this: it does not define a single 'peanut powder' category, and protein content across peanut-derived powders ranges from roughly 25% to 55% depending on fat removal and processing method. There is no universal 55% figure that applies to the category. Conceding what is genuinely true: if the specific product in question is a heavily defatted peanut protein concentrate, 55% is within the documented range. That is a real product that exists.

The manipulation pattern here is product-category blurring. Marketers and sharers of this claim use the broad, familiar label 'peanut powder' while citing a protein figure that only applies to the most aggressively processed, least representative version of that product. A second common trick, flagged by the research literature, is quoting protein on a dry-weight basis, which strips out moisture and inflates the percentage compared to the as-sold figure a consumer would actually eat. When you see a protein percentage claim for any powder product, ask two questions immediately: which specific product and processing method does this figure apply to, and is this measured on a dry-weight or as-sold basis? Those two questions will expose most inflated nutrition claims before they take hold.