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Carb Information for Portabella Mushrooms

Portabella Carbs, Nutritional Information and Glycemic Load

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Updated May 29, 2014

Portobello mushrooms with garlic, close-up
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Portabella mushrooms (especially the large ones) can be useful as vehicles for other ingredients such as pizza toppings. Grilled portabellas are very tasty and can be used instead of hamburger buns. They also take well to marinades. I prefer to remove the gills, as they can turn very dark and exude liquid which muddies the flavors of the other ingredients. Portabella mushrooms (sometimes mistakenly called portabello mushrooms) are grownup crimini mushrooms.

Carb Profile for White (Button) Mushrooms

Carbohydrate and Fiber Counts for Portabella Mushrooms

  • ½ cup diced raw portabella mushrooms: 1.5 gram effective (net) carbohydrate plus .5 gram fiber and 11 calories
  • 1 large portabella cap (about 3 oz.): 3 grams effective (net) carbohydrate plus 1 gram fiber and 22 calories
  • ½ cup sliced grilled portabella mushrooms: 1.5 gram effective (net) carbohydrate plus 1.5 fiber and and 21 calories

Glycemic Index for Portabella Mushrooms

As with most non-starchy vegetables, there is no scientific study of the glycemic index of mushrooms.

More Information about the Glycemic Index

Estimated Glycemic Load of Portabella Mushrooms

  • ½ cup diced raw portabella mushroom: 1
  • 1 large portabella cap (about 3 oz.): 2
  • ½ cup sliced grilled portabella mushrooms: 2

More Information About the Glycemic Load

Health Benefits of Portabella Mushrooms

Portabella mushrooms are an excellent source of copper, selenium, riboflavin, and niacin, and a very good source of panothenic acid, potassium, and phosphorus. They are a good source of thiamin.

More Carb Profiles:

Sources:

Leroux, Marcus, Foster-Powell, Kaye, Holt, Susanna and Brand-Miller, Janette. "International table of glycemic index and glycemic load values: 2002." American Journal of Clinical Nutrition. Vol. 76, No. 1, 5-56, (2002).

USDA National Nutrient Database for Standard Reference, Release 20.

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