United States Department of Agriculture
Agricultural Research Service

National Nutrient Database for Standard Reference Release 28
Basic Report:  12154, Nuts, walnuts, black, dried a 
heading Nutrient Unit
Value per 100 g

cup, chopped 125g

tbsp 7.8g

oz 28.35g
Proximates Water g 4.56 5.70 0.36 1.29
Proximates Energy kcal 619 774 48 175
Proximates Protein g 24.06 30.08 1.88 6.82
Proximates Total lipid (fat) g 59.33 74.16 4.63 16.82
Proximates Carbohydrate, by difference g 9.58 11.98 0.75 2.72
Proximates Fiber, total dietary g 6.8 8.5 0.5 1.9
Proximates Sugars, total g 1.10 1.38 0.09 0.31
Minerals Calcium, Ca mg 61 76 5 17
Minerals Iron, Fe mg 3.12 3.90 0.24 0.88
Minerals Magnesium, Mg mg 201 251 16 57
Minerals Phosphorus, P mg 513 641 40 145
Minerals Potassium, K mg 523 654 41 148
Minerals Sodium, Na mg 2 2 0 1
Minerals Zinc, Zn mg 3.37 4.21 0.26 0.96
Vitamins Vitamin C, total ascorbic acid mg 1.7 2.1 0.1 0.5
Vitamins Thiamin mg 0.057 0.071 0.004 0.016
Vitamins Riboflavin mg 0.130 0.162 0.010 0.037
Vitamins Niacin mg 0.470 0.588 0.037 0.133
Vitamins Vitamin B-6 mg 0.583 0.729 0.045 0.165
Vitamins Folate, DFE µg 31 39 2 9
Vitamins Vitamin B-12 µg 0.00 0.00 0.00 0.00
Vitamins Vitamin A, RAE µg 2 2 0 1
Vitamins Vitamin A, IU IU 40 50 3 11
Vitamins Vitamin E (alpha-tocopherol) mg 2.08 2.60 0.16 0.59
Vitamins Vitamin D (D2 + D3) µg 0.0 0.0 0.0 0.0
Vitamins Vitamin D IU 0 0 0 0
Vitamins Vitamin K (phylloquinone) µg 2.7 3.4 0.2 0.8
Lipids Fatty acids, total saturated g 3.483 4.354 0.272 0.987
Lipids Fatty acids, total monounsaturated g 15.442 19.302 1.204 4.378
Lipids Fatty acids, total polyunsaturated g 36.437 45.546 2.842 10.330
Lipids Cholesterol mg 0 0 0 0
Other Caffeine mg 0 0 0 0

Footnotes

a  Additional phytosterols total 57 mg/100 g; these include delta 5-avenasterol + sitostanol (28.7) and other minor sterols (28.3).