Is Half-fat Margarine Acidic or Alkaline?
Margarine, half-fat (raw) is alkaline: Negative PRAL: alkalizing after digestion.
Classification
Half-fat margarine is slightly alkaline at −1.3. It contains more water in place of fat, and milk components or additives bring some potassium, which explains the small minus. For your balance, it's still just a footnote: a thin 10 g layer adds only about −0.1. What you'll mainly notice is the difference in calories compared with full-fat margarine.
In the Oils & Fats category, half-fat margarine (raw) ranks #1 of 22, sorted from alkaline to acid-forming. More acid-forming are Margarine (−0.4), Sesame oil (−0.2), Sunflower oil (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 half-fat margarine 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: Margarine, half-fat (raw) has a PRAL of −1.3 per 100 g, so it counts as alkaline in your daily acid-base balance.
How much half-fat margarine do I need for a noticeable effect?
A tablespoon (10 g) of half-fat margarine adds −0.1 to your daily balance. For comparison: an egg is around +5.4, a slice of cheese around +6. So one serving of half-fat margarine roughly offsets one of them.
Why is half-fat margarine alkaline even though it is not a typical alkaline food?
The PRAL depends on the minerals left over after digestion, not on taste or pH. Margarine, half-fat provides more potassium, magnesium and calcium than phosphorus and protein, so the balance is negative (−1.3).
Margarine, Half-fat 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 Oils & Fats: Oils & Fats 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.