Fruit

Is Kumquat Acidic or Alkaline?

Quick answer
Alkaline
PRAL per 100 g
−2.7
Kumquat (fresh)

Kumquat (fresh) is alkaline: Negative PRAL: alkalizing after digestion.

strongly alkaline neutral strongly acid-forming
Serving
One piece or a handful (120 g)
PRAL per serving
−3.3
Energy
51 kcal per 100 g

Classification

At −2.7, kumquats are in the alkaline range, because these small citrus fruits supply potassium with hardly any protein. Unlike oranges, you eat the peel too. The peel tastes sweet and the flesh tastes sour, but that doesn't change the balance. A handful of about 100 g comes to about −3 at 51 kcal, a good snack between meals.

In the Fruit category, kumquat (fresh) ranks #60 of 80, sorted from alkaline to acid-forming. More alkaline options include Raspberry (−2.7), Lychee (−2.7), Orange (−2.8). More acid-forming are Pineapple (−2.6), Grapefruit (−2.6), Lime (−2.5).

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 kumquat 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: Kumquat (fresh) has a PRAL of −2.7 per 100 g, so it counts as alkaline in your daily acid-base balance.

How much kumquat do I need for a noticeable effect?

One piece or a handful (120 g) of kumquat adds −3.3 to your daily balance. For comparison: an egg is around +5.4, a slice of cheese around +6. So one serving of kumquat roughly offsets one of them.

Why is kumquat alkaline even though it tastes sour?

The PRAL depends on the minerals left over after digestion, not on taste or pH. Kumquat provides more potassium, magnesium and calcium than phosphorus and protein, so the balance is negative (−2.7).

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Compare all Fruit: Fruit 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.