Is Buckwheat Acidic or Alkaline?
Buckwheat (raw) is acid-forming: Positive PRAL: acid-forming after digestion.
Classification
Buckwheat isn't a grain but a member of the knotweed family, yet its PRAL behaves like a grain's. The raw kernels bring lots of protein and phosphorus, and potassium and magnesium offset only part of it, hence +6.5. When cooked, it absorbs a lot of water, and the acid load spreads over much more weight. As a side with plenty of vegetables, it makes a balanced plate.
In the Grains, Bread & Pasta category, buckwheat (raw) ranks #89 of 121, sorted from alkaline to acid-forming. More alkaline options include Wheat flour type 1050 (+6.5), Whole wheat flour (+6.3), Teff (+6.3). More acid-forming are Millet flour (+6.5), Protein bread (+6.6), Egg noodles, fresh (+6.7).
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 buckwheat
A dry serving (50 g) of buckwheat adds +3.3 to your daily balance. These three bring it back; the grams shown offset exactly this serving.
Frequently Asked Questions
Is buckwheat 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: Buckwheat (raw) has a PRAL of +6.5 per 100 g, so it counts as acid-forming in your daily acid-base balance.
How much spinach offsets a dry serving (50 g) of buckwheat?
A dry serving (50 g) of buckwheat adds +3.3 to your daily balance. Spinach (fresh) has −12.2 per 100 g, so about 30 g of spinach offset this serving.
Do I have to avoid buckwheat on an alkaline diet?
No. What counts is the balance of the whole day, not a single food. Buckwheat is acid-forming; with enough vegetables, potatoes and fruit on the same plate, the meal stays balanced.
Buckwheat 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.