Is Rambutan Acidic or Alkaline?
Rambutan (fresh) is alkaline: Negative PRAL: alkalizing after digestion.
Classification
Rambutan is only just alkaline at −0.8: the translucent flesh contains some potassium, but it is mostly water and sugar, so few alkaline minerals remain per 100 g. A greengage, for comparison, comes to −4.8. As an exotic snack, rambutan is more of a treat than a source of alkaline minerals, and it hardly shifts your balance.
In the Fruit category, rambutan (fresh) ranks #78 of 80, sorted from alkaline to acid-forming. More alkaline options include Mangosteen (−1.0), Blueberry (−1.3), Wild blueberry (−1.3). More acid-forming are Lingonberry, sweetened (−0.4), Rose hip (0.0).
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.
Goes well with
Frequently Asked Questions
Is rambutan 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: Rambutan (fresh) has a PRAL of −0.8 per 100 g, so it counts as alkaline in your daily acid-base balance.
How much rambutan do I need for a noticeable effect?
One piece or a handful (120 g) of rambutan adds −1.0 to your daily balance. For comparison: an egg is around +5.4, a slice of cheese around +6. So one serving of rambutan roughly offsets one of them.
Why is rambutan alkaline even though it tastes sour?
The PRAL depends on the minerals left over after digestion, not on taste or pH. Rambutan provides more potassium, magnesium and calcium than phosphorus and protein, so the balance is negative (−0.8).
Rambutan logged, balance checked.
Basentracker adds up every meal automatically and shows whether your day is in the alkaline range. The same values as on this page, all 977 foods, photo scan, recipes.
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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.