Is Soy Bread Acidic or Alkaline?
Soy bread (baked) is slightly acid-forming: Positive PRAL: acid-forming after digestion.
Classification
Soy bread comes in at +1.6, below white bread (+3.7) and wholemeal bread (+2.6). The soy adds protein, but also plenty of potassium, which offsets some of the phosphorus from the grain. Two slices weighing 80 g together stay at just over +1 and barely register in your daily balance.
In the Grains, Bread & Pasta category, soy bread (baked) ranks #15 of 121, sorted from alkaline to acid-forming. More alkaline options include Parboiled rice (+1.5), Garlic bread (+1.4), Schupfnudeln (potato noodles) (+1.3). More acid-forming are Wholemeal crispbread (+1.6), Crispbread (snack) (+1.7), Rye crispbread (+1.7).
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.
What balances soy bread
Two slices (100 g) of soy bread adds +1.6 to your daily balance. These three bring it back; the grams shown offset exactly this serving.
Frequently Asked Questions
Is soy bread 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 bread (baked) has a PRAL of +1.6 per 100 g, so it counts as slightly acid-forming in your daily acid-base balance.
How much spinach offsets two slices (100 g) of soy bread?
Two slices (100 g) of soy bread adds +1.6 to your daily balance. Spinach (fresh) has −12.2 per 100 g, so about 10 g of spinach offset this serving.
Do I have to avoid soy bread on an alkaline diet?
No. What counts is the balance of the whole day, not a single food. Soy bread is slightly acid-forming; with enough vegetables, potatoes and fruit on the same plate, the meal stays balanced.
Soy Bread logged, balance checked.
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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.