United States Department of Agriculture
Agricultural Research Service

National Nutrient Database for Standard Reference Release 28
Full Report (All Nutrients):  12154, Nuts, walnuts, black, dried a 
Food Group: Nut and Seed Products
Scientific Name:  Juglans nigra
Carbohydrate Factor: 4.07   Fat Factor:8.37   Protein Factor: 3.47   Nitrogen to Protein Conversion Factor: 5.3  
Refuse: 76%   Refuse Description:   Shells
heading Nutrient Unit
Value per 100 g
# of Data Points Std. Error
cup, chopped 125 g

tbsp 7.8 g

oz 28.35 g
Proximates Water 2 g 4.56 11 0.199 5.70 0.36 1.29
Proximates Energy kcal 619 -- -- 774 48 175
Proximates Energy kJ 2590 -- -- 3238 202 734
Proximates Protein 1, 2 g 24.06 11 0.287 30.07 1.88 6.82
Proximates Total lipid (fat) 2, 3 g 59.33 34 1.436 74.16 4.63 16.82
Proximates Ash 2 g 2.47 11 0.142 3.09 0.19 0.70
Proximates Carbohydrate, by difference g 9.58 -- -- 11.97 0.75 2.72
Proximates Fiber, total dietary 2 g 6.8 2 -- 8.5 0.5 1.9
Proximates Sugars, total 2 g 1.10 1 -- 1.38 0.09 0.31
Proximates Sucrose 2 g 1.00 1 -- 1.25 0.08 0.28
Proximates Glucose (dextrose) 2 g 0.05 1 -- 0.06 0.00 0.01
Proximates Fructose 2 g 0.05 1 -- 0.06 0.00 0.01
Proximates Lactose 2 g 0.00 1 -- 0.00 0.00 0.00
Proximates Maltose 2 g 0.00 1 -- 0.00 0.00 0.00
Proximates Starch 2 g 0.24 1 -- 0.30 0.02 0.07
Minerals Calcium, Ca 2 mg 61 16 2.800 76 5 17
Minerals Iron, Fe 2 mg 3.12 16 0.045 3.90 0.24 0.88
Minerals Magnesium, Mg 2 mg 201 16 1.000 251 16 57
Minerals Phosphorus, P 2 mg 513 16 49.000 641 40 145
Minerals Potassium, K 2 mg 523 16 1.000 654 41 148
Minerals Sodium, Na 2 mg 2 13 1.040 2 0 1
Minerals Zinc, Zn 2 mg 3.37 16 0.050 4.21 0.26 0.96
Minerals Copper, Cu 2 mg 1.360 16 0.340 1.700 0.106 0.386
Minerals Manganese, Mn 2 mg 3.896 16 0.376 4.870 0.304 1.105
Minerals Selenium, Se 4 µg 17.0 1 -- 21.2 1.3 4.8
Vitamins Vitamin C, total ascorbic acid 2 mg 1.7 1 -- 2.1 0.1 0.5
Vitamins Thiamin 2 mg 0.057 1 -- 0.071 0.004 0.016
Vitamins Riboflavin 2 mg 0.130 1 -- 0.163 0.010 0.037
Vitamins Niacin 2 mg 0.470 1 -- 0.588 0.037 0.133
Vitamins Pantothenic acid 2 mg 1.660 1 -- 2.075 0.129 0.471
Vitamins Vitamin B-6 2 mg 0.583 1 -- 0.729 0.045 0.165
Vitamins Folate, total 2 µg 31 1 -- 39 2 9
Vitamins Folic acid µg 0 -- -- 0 0 0
Vitamins Folate, food µg 31 1 -- 39 2 9
Vitamins Folate, DFE µg 31 -- -- 39 2 9
Vitamins Choline, total 2 mg 32.1 -- -- 40.1 2.5 9.1
Vitamins Betaine 2 mg 0.5 1 -- 0.6 0.0 0.1
Vitamins Vitamin B-12 µg 0.00 -- -- 0.00 0.00 0.00
Vitamins Vitamin B-12, added µg 0.00 -- -- 0.00 0.00 0.00
Vitamins Vitamin A, RAE 2 µg 2 1 -- 2 0 1
Vitamins Retinol µg 0 -- -- 0 0 0
Vitamins Carotene, beta 2 µg 24 1 -- 30 2 7
Vitamins Carotene, alpha 2 µg 0 1 -- 0 0 0
Vitamins Cryptoxanthin, beta µg 0 -- -- 0 0 0
Vitamins Vitamin A, IU 2 IU 40 1 -- 50 3 11
Vitamins Lycopene µg 0 -- -- 0 0 0
Vitamins Lutein + zeaxanthin µg 9 -- -- 11 1 3
Vitamins Vitamin E (alpha-tocopherol) 2, 3 mg 2.08 4 0.275 2.60 0.16 0.59
Vitamins Vitamin E, added mg 0.00 -- -- 0.00 0.00 0.00
Vitamins Tocopherol, beta 2, 3 mg 0.01 4 0.005 0.01 0.00 0.00
Vitamins Tocopherol, gamma 2, 3 mg 28.78 4 0.295 35.98 2.24 8.16
Vitamins Tocopherol, delta 2, 3 mg 1.51 4 0.065 1.89 0.12 0.43
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 4:0 g 0.000 -- -- 0.000 0.000 0.000
Lipids 6:0 g 0.000 -- -- 0.000 0.000 0.000
Lipids 8:0 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 10:0 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 12:0 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 14:0 2, 3 g 0.000 4 0.000 0.000 0.000 0.000
Lipids 15:0 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 16:0 2, 3 g 1.934 9 0.118 2.417 0.151 0.548
Lipids 17:0 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 18:0 2, 3 g 1.549 9 0.108 1.936 0.121 0.439
Lipids 20:0 2, 3 g 0.000 4 0.000 0.000 0.000 0.000
Lipids 22:0 2, 3 g 0.000 4 0.000 0.000 0.000 0.000
Lipids Fatty acids, total monounsaturated g 15.442 -- -- 19.302 1.204 4.378
Lipids 14:1 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 15:1 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 16:1 undifferentiated 2, 3 g 0.042 6 0.023 0.052 0.003 0.012
Lipids 17:1 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 18:1 undifferentiated 2, 3 g 15.128 10 1.656 18.910 1.180 4.289
Lipids 20:1 2, 3 g 0.272 6 0.158 0.340 0.021 0.077
Lipids 22:1 undifferentiated g 0.000 -- -- 0.000 0.000 0.000
Lipids Fatty acids, total polyunsaturated g 36.437 -- -- 45.546 2.842 10.330
Lipids 18:2 undifferentiated 2, 3 g 33.760 10 0.723 42.200 2.633 9.571
Lipids 18:2 n-6 c,c 3 g 33.760 3 -- 42.200 2.633 9.571
Lipids 18:3 undifferentiated 3 g 2.677 9 0.629 3.346 0.209 0.759
Lipids 18:3 n-3 c,c,c (ALA) 2, 3 g 2.677 4 0.022 3.346 0.209 0.759
Lipids 18:3 n-6 c,c,c 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 18:4 g 0.000 -- -- 0.000 0.000 0.000
Lipids 20:2 n-6 c,c 2, 3 g 0.000 4 0.000 0.000 0.000 0.000
Lipids 20:3 undifferentiated 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 20:4 undifferentiated 2 g 0.000 1 -- 0.000 0.000 0.000
Lipids 20:5 n-3 (EPA) g 0.000 -- -- 0.000 0.000 0.000
Lipids 22:5 n-3 (DPA) g 0.000 -- -- 0.000 0.000 0.000
Lipids 22:6 n-3 (DHA) g 0.000 -- -- 0.000 0.000 0.000
Lipids Cholesterol 2 mg 0 1 -- 0 0 0
Lipids Stigmasterol 2, 3 mg 1 4 0.325 1 0 0
Lipids Campesterol 2, 3 mg 5 4 0.205 6 0 1
Lipids Beta-sitosterol 2, 3 mg 115 4 0.865 144 9 33
Amino Acids Tryptophan 1 g 0.318 -- -- 0.398 0.025 0.090
Amino Acids Threonine 1 g 0.721 -- -- 0.901 0.056 0.204
Amino Acids Isoleucine 1 g 0.966 -- -- 1.208 0.075 0.274
Amino Acids Leucine 1 g 1.684 -- -- 2.105 0.131 0.477
Amino Acids Lysine 1 g 0.713 -- -- 0.891 0.056 0.202
Amino Acids Methionine 1 g 0.467 -- -- 0.584 0.036 0.132
Amino Acids Cystine 1 g 0.462 -- -- 0.578 0.036 0.131
Amino Acids Phenylalanine 1 g 1.094 -- -- 1.367 0.085 0.310
Amino Acids Tyrosine 1 g 0.740 -- -- 0.925 0.058 0.210
Amino Acids Valine 1 g 1.271 -- -- 1.589 0.099 0.360
Amino Acids Arginine 1 g 3.618 -- -- 4.522 0.282 1.026
Amino Acids Histidine 1 g 0.672 -- -- 0.840 0.052 0.191
Amino Acids Alanine 1 g 1.048 -- -- 1.310 0.082 0.297
Amino Acids Aspartic acid 1 g 2.433 -- -- 3.041 0.190 0.690
Amino Acids Glutamic acid 1 g 5.152 -- -- 6.440 0.402 1.461
Amino Acids Glycine 1 g 1.189 -- -- 1.486 0.093 0.337
Amino Acids Proline 1 g 0.926 -- -- 1.157 0.072 0.263
Amino Acids Serine 1 g 1.225 -- -- 1.531 0.096 0.347
Other Alcohol, ethyl g 0.0 -- -- 0.0 0.0 0.0
Other Caffeine mg 0 -- -- 0 0 0
Other Theobromine mg 0 -- -- 0 0 0

Sources of Data

1Southeastern Regional Lab (ARS South Atlantic Area), Georgia, USDA Protein hydrolysis studies on tree nuts , 1981  Athens GA  
2Hammons Products Company Nutrient Analysis of Black Walnuts , 2002  Stockton MO  
3KS Robbins, E-C Shin, RL Shewfelt, R R Eitenmiller, RB Pegg Update on the healthful lipid constituents of commercially important tree nuts , 2011 Journal of Agricultural and Food Chemistry 59   pp.12083-12092
4O.E. Olson, I.S. Palmer Selenium in foods purchased or produced in South Dakota , 1984 Journal of Food Science 49  

Footnotes

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