Is Rye (Whole Kernel) Acidic or Alkaline?
Rye, whole kernel (raw) is slightly acid-forming: Positive PRAL: acid-forming after digestion.
Classification
Whole rye kernels come in at +4.4, because protein and phosphorus from the germ and bran outweigh the rest, even though the grain's potassium offsets part of it. When cooked or soaked, the kernels absorb water, and the value per 100 g drops significantly. Baked into rye bread, the grain ends up at +3.0.
In the Grains, Bread & Pasta category, rye (whole kernel) (raw) ranks #59 of 121, sorted from alkaline to acid-forming. More alkaline options include Wholemeal roll (+4.3), Wholemeal toast bread (+4.3), Brown rice (+4.2). More acid-forming are Potato bread (+4.7), Wheat-rye bread (+4.7), White rice (+4.7).
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 rye (whole kernel)
A dry serving (50 g) of rye (whole kernel) adds +2.2 to your daily balance. These three bring it back; the grams shown offset exactly this serving.
Frequently Asked Questions
Is rye (whole kernel) 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: Rye, whole kernel (raw) has a PRAL of +4.4 per 100 g, so it counts as slightly acid-forming in your daily acid-base balance.
How much avocado offsets a dry serving (50 g) of rye (whole kernel)?
A dry serving (50 g) of rye (whole kernel) adds +2.2 to your daily balance. Avocado (ripe) has −9.9 per 100 g, so about 20 g of avocado offset this serving.
Do I have to avoid rye (whole kernel) on an alkaline diet?
No. What counts is the balance of the whole day, not a single food. Rye, whole kernel is slightly acid-forming; with enough vegetables, potatoes and fruit on the same plate, the meal stays balanced.
Rye, Whole Kernel 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.