Grains, Bread & Pasta

Are Penne Acidic or Alkaline?

Quick answer
Acidic
PRAL per 100 g
+5.8
Penne (cooked)

Penne (cooked) are acid-forming: Positive PRAL: acid-forming after digestion.

strongly alkaline neutral strongly acid-forming
Serving
A small side (100 g)
PRAL per serving
+5.8
Energy
146 kcal per 100 g

Classification

Cooked penne is acid-forming at +5.8 because durum wheat semolina contains protein and phosphorus but hardly any potassium. Compared with dry penne at +10.9, the value is almost cut in half because the pasta absorbs water as it cooks. The sauce is what matters: arrabbiata or a tomato sauce with vegetables pulls the plate toward zero, a cheese and cream sauce pushes it the other way.

In the Grains, Bread & Pasta category, penne (cooked) rank #77 of 121, sorted from alkaline to acid-forming. More alkaline options include Pretzel stick (+5.7), Pretzel (lye) (+5.7), Focaccia (+5.7). More acid-forming are Amaranth (+5.9), Couscous (durum) (+5.9), Puffed rice cereal (+6.0).

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.

Penne: cooked, raw

Same food, different state. All values per 100 g.

State PRAL
cooked +5.8
raw +10.9

What balances penne

A small side (100 g) of penne adds +5.8 to your daily balance. These three bring it back; the grams shown offset exactly this serving.

Frequently Asked Questions

Are penne 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: Penne (cooked) have a PRAL of +5.8 per 100 g, so they count as acid-forming in your daily acid-base balance.

How much spinach offsets a small side (100 g) of penne?

A small side (100 g) of penne adds +5.8 to your daily balance. Spinach (fresh) has −12.2 per 100 g, so about 50 g of spinach offset this serving.

Do I have to avoid penne on an alkaline diet?

No. What counts is the balance of the whole day, not a single food. Penne are acid-forming; with enough vegetables, potatoes and fruit on the same plate, the meal stays balanced.

Penne, cooked or raw: which is more alkaline?

Penne (cooked) is at +5.8, Penne (raw) at +10.9. So the "cooked" version is more alkaline. Differences come from water content, cooking water or concentration during drying.

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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.