Is Full-fett Soy Flour Acidic or Alkaline?
Soy flour, full-fett (raw) is strongly alkaline: Negative PRAL: alkalizing after digestion.
Classification
Full-fat soy flour is clearly alkaline at −5.2, driven by the potassium of the whole bean, which is milled here together with its oil, protein and fiber. The defatted version even reaches −11.3, because without the fat, more minerals fit into 100 g. For comparison, wheat flour sits at +5.6, so adding some soy flour to a dough offsets a little.
In the Grains, Bread & Pasta category, full-fett soy flour (raw) ranks #2 of 121, sorted from alkaline to acid-forming. More alkaline options include Soy flour, defatted (−11.3). More acid-forming are Corn, whole kernel (−2.1), Muesli, classic (−1.6), Sweet corn (−1.0).
Acidic or alkaline: PRAL, not pH
On this site, acidic and alkaline refer to the PRAL (potential renal acid load). It estimates what a food leaves behind once it has been digested: a positive value is acid-forming, a negative value is alkalizing. That is different from the pH of the food itself: a lemon tastes sour, yet its PRAL is −4.0, so it is alkalizing. Your diet does not change your blood pH. It does change how much acid your kidneys have to deal with.
Goes well with
Frequently Asked Questions
Is full-fett soy flour acidic?
It depends on what you mean by acidic. The pH describes the food itself, for example how sour it tastes. The PRAL describes what it leaves behind after digestion: Soy flour, full-fett (raw) has a PRAL of −5.2 per 100 g, so it counts as strongly alkaline in your daily acid-base balance.
How much full-fett soy flour do I need for a noticeable effect?
A dry serving (50 g) of full-fett soy flour adds −2.6 to your daily balance. For comparison: an egg is around +5.4, a slice of cheese around +6. So one serving of full-fett soy flour roughly offsets one of them.
Why is full-fett soy flour alkaline even though it is not a typical alkaline food?
The PRAL depends on the minerals left over after digestion, not on taste or pH. Soy flour, full-fett provides more potassium, magnesium and calcium than phosphorus and protein, so the balance is negative (−5.2).
Soy Flour, Full-fett logged, balance checked.
Basentracker adds up every meal automatically and shows whether your day is in the alkaline range. The same values as on this page, all 977 foods, photo scan, recipes.
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Compare all Grains, Bread & Pasta: Grains, Bread & Pasta table. Common questions are answered in Acidic or Alkaline?, and the PRAL calculator adds up a whole meal.
Source: Basentracker food database (PRAL according to Remer & Manz, calculated from protein, phosphorus, potassium, magnesium and calcium per 100 g). This information does not replace medical advice.