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Mushroom, white, per 100 g: 22 kcal, 3.1 g protein, 3.3 g carbohydrate, 1 g fibre, 0.3 g fat. Figures are the USDA reference values for “Mushrooms, white, raw”.

At 100 g it reaches the EU threshold to be called a source of copper, riboflavin (b2), pantothenic acid (b5), niacin (b3). The table below gives the full composition, and every claim listed underneath is quoted from the EU register rather than written by us.

High protein56% of the energy in this food is proteinFat-freeUnder 0.5 g fat per 100 gLow sugars2.0 g sugars per 100 gSodium-freeUnder 5 mg sodium per 100 gLow energy22 kcal per 100 g

Nutritional value per 100 g

NutrientPer 100 g% NRV
Energy and macronutrients
Energy22 kcal
Protein3.09 g
Fat0.34 g
of which saturates0.05 g
of which monounsaturates0 g
of which polyunsaturates0.16 g
Carbohydrate3.26 g
of which sugars1.98 g
of which starch0 g
Fibre1 g
Water92.5 g
Cholesterol0 mg
Minerals
Calcium3 mg0.375%
Iron0.5 mg3.57%
Magnesium9 mg2.4%
Phosphorus86 mg12.3%
Potassium318 mg15.9%
Sodium5 mg
Zinc0.52 mg5.2%
Copper0.318 mg31.8%
Manganese0.047 mg2.35%
Selenium9.3 µg16.9%
Vitamins
Vitamin A0 µg
Vitamin D0.2 µg4%
Vitamin E0.01 mg0.083%
Vitamin K0 µg
Vitamin C2.1 mg2.63%
Thiamine (B1)0.081 mg7.36%
Riboflavin (B2)0.402 mg28.7%
Niacin (B3)3.61 mg22.5%
Pantothenic acid (B5)1.5 mg25%
Vitamin B60.104 mg7.43%
Folate17 µg8.5%
Vitamin B120.04 µg1.6%

% NRV is the nutrient reference value for an average adult, as set in Annex XIII of Regulation (EU) 1169/2011. A blank cell means no reference value is defined for that nutrient, not that it is unimportant.

What this food is a source of

This food reaches the legal threshold for the claims below. The wording is quoted exactly from the EU register of authorised health claims — we have not written or paraphrased any of it.

High in Copper31.8% NRV per 100 g
  • Copper contributes to normal energy-yielding metabolism
  • Copper contributes to the protection of cells from oxidative stress
Source of Riboflavin (B2)28.7% NRV per 100 g
  • Riboflavin contributes to normal energy-yielding metabolism
  • Riboflavin contributes to the maintenance of normal skin
Source of Pantothenic acid (B5)25% NRV per 100 g
  • Pantothenic acid contributes to normal energy-yielding metabolism
  • Pantothenic acid contributes to normal mental performance
Source of Niacin (B3)22.5% NRV per 100 g
  • Niacin contributes to normal energy-yielding metabolism
  • Niacin contributes to the maintenance of normal skin
Source of Selenium16.9% NRV per 100 g
  • Selenium contributes to the normal function of the immune system
  • Selenium contributes to the protection of cells from oxidative stress
Source of Potassium15.9% NRV per 100 g
  • Potassium contributes to normal muscle function
  • Potassium contributes to the maintenance of normal blood pressure
High protein56.2% of energy from protein
  • Protein contributes to a growth in muscle mass
  • Protein contributes to the maintenance of muscle mass
Where these numbers come from. Composition data: USDA FoodData Central, SR Legacy release, entry Mushrooms, white, raw (FDC ID 169251). Values are per 100 g of the food as described, and real foods vary with variety, season, soil, storage and cooking. Claim thresholds: Regulation (EC) 1924/2006. Claim wording: Regulation (EU) 432/2012.
This is reference information, not personal advice. Nutrient content is one small part of a diet, and no single food prevents or treats disease. If you are pregnant, managing a medical condition, or taking medication — particularly anticoagulants, thyroid medication or immunosuppressants, where diet can interact — ask your doctor or pharmacist before making changes.