United States Department of Agriculture
Agricultural Research Service
National Nutrient Database for Standard Reference Release 28
Basic Report:  11998, Mushrooms, portabella, exposed to ultraviolet light, raw a 
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heading Nutrient Unit
Value per 100 g
cup diced 86 g
piece whole 84 g
Proximates Water g 92.82 79.83 77.97
Proximates Energy kcal 22 19 18
Proximates Protein g 2.11 1.81 1.77
Proximates Total lipid (fat) g 0.35 0.30 0.29
Proximates Carbohydrate, by difference g 3.87 3.33 3.25
Proximates Fiber, total dietary g 1.3 1.1 1.1
Proximates Sugars, total g 2.50 2.15 2.10
Minerals Calcium, Ca mg 3 3 3
Minerals Iron, Fe mg 0.31 0.27 0.26
Minerals Magnesium, Mg mg 10 9 8
Minerals Phosphorus, P mg 108 93 91
Minerals Potassium, K mg 364 313 306
Minerals Sodium, Na mg 9 8 8
Minerals Zinc, Zn mg 0.53 0.46 0.45
Vitamins Vitamin C, total ascorbic acid mg 0.0 0.0 0.0
Vitamins Thiamin mg 0.059 0.051 0.050
Vitamins Riboflavin mg 0.130 0.112 0.109
Vitamins Niacin mg 4.494 3.865 3.775
Vitamins Vitamin B-6 mg 0.148 0.127 0.124
Vitamins Folate, DFE b µg 28 24 24
Vitamins Vitamin B-12 µg 0.05 0.04 0.04
Vitamins Vitamin A, RAE µg 0 0 0
Vitamins Vitamin A, IU IU 0 0 0
Vitamins Vitamin E (alpha-tocopherol) mg 0.02 0.02 0.02
Vitamins Vitamin D (D2 + D3) µg 28.4 24.4 23.9
Vitamins Vitamin D IU 1135 976 953
Vitamins Vitamin K (phylloquinone) µg 0.0 0.0 0.0
Lipids Fatty acids, total saturated g 0.060 0.052 0.050
Lipids Fatty acids, total monounsaturated g 0.020 0.017 0.017
Lipids Fatty acids, total polyunsaturated g 0.117 0.101 0.098
Lipids Fatty acids, total trans g 0.000 0.000 0.000
Lipids Cholesterol mg 0 0 0

Footnotes

a  Ergosterol = 56 mg/100 g.
b  Mean value contains data based on the analysis of 5-methyltetrahydrofolate, 10-formyl folic acid, and 5-formyltetrahydrofolic acid plus total folate determined microbiologically
b  Mean value contains data based on the analysis of 5-methyltetrahydrofolate, 10-formyl folic acid, and 5-formyltetrahydrofolic acid plus total folate determined microbiologically
b  Mean value contains data based on the analysis of 5-methyltetrahydrofolate, 10-formyl folic acid, and 5-formyltetrahydrofolic acid plus total folate determined microbiologically