Is Oyster Mushroom Acidic or Alkaline?
Oyster mushroom (fresh) is alkaline: Negative PRAL: alkalizing after digestion.
Classification
Oyster mushrooms are not seafood but mushrooms, and they behave like it: lots of water, a good amount of potassium, little protein. That adds up to −1.7, which makes them a mildly alkaline meat substitute. Seared with garlic and parsley, they deliver savory flavor without the acid load of chicken or schnitzel, at 32 kcal per 100 g.
In the Vegetables & Salad category, oyster mushroom (fresh) ranks #83 of 110, sorted from alkaline to acid-forming. More alkaline options include Pickled cucumbers (−2.0), Green bell pepper (−2.3), Onion (−2.4). More acid-forming are Savoy cabbage (−1.7), Porcini mushrooms (−1.6), Morel mushroom (−1.5).
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.
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Frequently Asked Questions
Is oyster mushroom 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: Oyster mushroom (fresh) has a PRAL of −1.7 per 100 g, so it counts as alkaline in your daily acid-base balance.
How much oyster mushroom do I need for a noticeable effect?
A serving (150 g) of oyster mushroom adds −2.6 to your daily balance. For comparison: an egg is around +5.4, a slice of cheese around +6. So one serving of oyster mushroom roughly offsets one of them.
Why is oyster mushroom 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. Oyster mushroom provides more potassium, magnesium and calcium than phosphorus and protein, so the balance is negative (−1.7).
Oyster Mushroom 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 Vegetables & Salad: Vegetables & Salad 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.