United States Department of Agriculture
Agricultural Research Service

National Nutrient Database for Standard Reference Legacy Release
Try FoodData Central Statistics Report:  12154, Nuts, walnuts, black, dried a 
heading Nutrient Unit Value (100g) Data Points Std. Error Min Max df LB UB # Studies Source NDB Ref Last Modified
Proximates Water 2 g 4.56 11 0.190 4.36 4.76 1.0 2.03 7.08 2 Analytical or derived from analytical -- 06/01/2002
Proximates Energy kcal 619 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Proximates Energy kJ 2590 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Proximates Protein 1, 2 g 24.06 11 0.280 23.78 24.35 1.0 20.41 27.7 2 Analytical or derived from analytical -- 06/01/2002
Proximates Total lipid (fat) 2, 3 g 59.33 34 1.430 56.58 61.42 2.0 53.15 65.51 3 Analytical or derived from analytical -- 02/01/2014
Proximates Ash 2 g 2.47 11 0.140 2.33 2.61 1.0 0.67 4.26 2 Analytical or derived from analytical -- 06/01/2002
Proximates Carbohydrate, by difference g 9.58 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Proximates Fiber, total dietary 2 g 6.8 2 -- 5 8.6 1.0 -- -- 2 Analytical or derived from analytical -- 06/01/2002
Proximates Sugars, total 2 g 1.10 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Sucrose 2 g 1.00 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Glucose (dextrose) 2 g 0.05 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Fructose 2 g 0.05 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Lactose 2 g 0.00 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Maltose 2 g 0.00 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Proximates Starch 2 g 0.24 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Minerals Calcium, Ca 2 mg 61 16 2.000 58 64 1.0 25.0 96.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Iron, Fe 2 mg 3.12 16 0.040 3.07 3.16 1.0 2.54 3.68 2 Analytical or derived from analytical -- 06/01/2002
Minerals Magnesium, Mg 2 mg 201 16 1.000 200 202 1.0 188.0 213.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Phosphorus, P 2 mg 513 16 49.000 464 562 1.0 -109.0 1135.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Potassium, K 2 mg 523 16 1.000 522 524 1.0 510.0 535.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Sodium, Na 2 mg 2 13 1.000 1 3 1.0 -11.0 15.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Zinc, Zn 2 mg 3.37 16 0.050 3.32 3.42 1.0 2.73 4.0 2 Analytical or derived from analytical -- 06/01/2002
Minerals Copper, Cu 2 mg 1.360 16 0.340 1.02 1.7 1.0 -2.96 5.68 2 Analytical or derived from analytical -- 06/01/2002
Minerals Manganese, Mn 2 mg 3.896 16 0.376 3.52 4.27 1.0 -0.876 8.667 2 Analytical or derived from analytical -- 06/01/2002
Minerals Selenium, Se 4 µg 17.0 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 12/01/1992
Vitamins Vitamin C, total ascorbic acid 2 mg 1.7 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Thiamin 2 mg 0.057 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Riboflavin 2 mg 0.130 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Niacin 2 mg 0.470 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Pantothenic acid 2 mg 1.660 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Vitamin B-6 2 mg 0.583 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Folate, total 2 µg 31 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Folic acid µg 0 -- -- 0 0 -- -- -- -- Assumed zero -- 01/01/2001
Vitamins Folate, food µg 31 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2006
Vitamins Folate, DFE µg 31 -- -- 0 0 -- -- -- -- Calculated or imputed -- 07/01/2006
Vitamins Choline, total 2 mg 32.1 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 04/01/2006
Vitamins Betaine 2 mg 0.5 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 04/01/2006
Vitamins Vitamin B-12 µg 0.00 -- -- 0 0 -- -- -- -- Assumed zero -- 09/01/1984
Vitamins Vitamin B-12, added µg 0.00 -- -- 0 0 -- -- -- -- Assumed zero -- 09/01/2004
Vitamins Vitamin A, RAE 2 µg 2 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Retinol µg 0 -- -- 0 0 -- -- -- -- Assumed zero -- 06/01/2002
Vitamins Carotene, beta 2 µg 24 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Carotene, alpha 2 µg 0 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Cryptoxanthin, beta µg 0 -- -- 0 0 -- -- -- -- Calculated or imputed 12155 10/01/2002
Vitamins Vitamin A, IU 2 IU 40 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Lycopene µg 0 -- -- 0 0 -- -- -- -- Calculated or imputed 12155 10/01/2002
Vitamins Lutein + zeaxanthin µg 9 -- -- 0 0 -- -- -- -- Calculated or imputed 12155 10/01/2002
Vitamins Vitamin E (alpha-tocopherol) 2, 3 mg 2.08 4 0.270 1.8 2.35 1.0 -1.41 5.56 2 Analytical or derived from analytical -- 02/01/2014
Vitamins Vitamin E, added mg 0.00 -- -- 0 0 -- -- -- -- Assumed zero -- 09/01/2004
Vitamins Tocopherol, beta 2, 3 mg 0.01 4 0.005 0 0.01 1.0 -0.05 0.06 2 Analytical or derived from analytical -- 02/01/2014
Vitamins Tocopherol, gamma 2, 3 mg 28.78 4 0.290 28.48 29.07 1.0 25.02 32.52 2 Analytical or derived from analytical -- 02/01/2014
Vitamins Tocopherol, delta 2, 3 mg 1.51 4 0.060 1.44 1.57 1.0 0.67 2.33 2 Analytical or derived from analytical -- 02/01/2014
Vitamins Tocotrienol, alpha 2, 3 mg 0.00 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Vitamins Tocotrienol, beta 2 mg 0.00 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Vitamins Tocotrienol, gamma 2, 3 mg 0.70 4 0.690 0 1.39 1.0 -8.13 9.52 2 Analytical or derived from analytical -- 02/01/2014
Vitamins Tocotrienol, delta 2, 3 mg 0.00 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Vitamins Vitamin D (D2 + D3) µg 0.0 -- -- 0 0 -- -- -- -- Assumed zero -- 03/01/2009
Vitamins Vitamin D IU 0 -- -- 0 0 -- -- -- -- Assumed zero -- 03/01/2009
Vitamins Vitamin K (phylloquinone) µg 2.7 -- -- 0 0 -- -- -- -- Calculated or imputed 12155 10/01/2002
Lipids Fatty acids, total saturated g 3.483 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Lipids 4:0 g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids 6:0 g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids 8:0 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 10:0 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 12:0 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 14:0 2, 3 g 0.000 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Lipids 15:0 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 16:0 2, 3 g 1.934 9 0.118 1.72 2.13 2.0 1.427 2.44 3 Analytical or derived from analytical -- 02/01/2014
Lipids 17:0 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 18:0 2, 3 g 1.549 9 0.108 1.39 1.76 2.0 1.083 2.015 3 Analytical or derived from analytical -- 02/01/2014
Lipids 20:0 2, 3 g 0.000 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Lipids 22:0 2, 3 g 0.000 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Lipids Fatty acids, total monounsaturated g 15.442 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Lipids 14:1 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 15:1 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 16:1 undifferentiated 2, 3 g 0.042 6 0.023 0 0.08 2.0 -0.055 0.139 3 Analytical or derived from analytical -- 02/01/2014
Lipids 17:1 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 18:1 undifferentiated 2, 3 g 15.128 10 1.656 11.86 17.21 2.0 8.002 22.254 3 Analytical or derived from analytical -- 02/01/2014
Lipids 20:1 2, 3 g 0.272 6 0.158 0 0.55 2.0 -0.409 0.953 3 Analytical or derived from analytical -- 02/01/2014
Lipids 22:1 undifferentiated g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids Fatty acids, total polyunsaturated g 36.437 -- -- 0 0 -- -- -- -- Calculated or imputed -- 02/01/2014
Lipids 18:2 undifferentiated 2, 3 g 33.760 10 0.723 32.69 35.14 2.0 30.647 36.872 3 Aggregated data involving combinations of source codes 1 &12 -- 02/01/2014
Lipids 18:2 n-6 c,c 3 g 33.760 3 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/2014
Lipids 18:3 undifferentiated 3 g 2.677 9 0.629 2.05 3.31 1.0 -5.311 10.666 2 Aggregated data involving combinations of source codes 1 &12 -- 02/01/2014
Lipids 18:3 n-3 c,c,c (ALA) 2, 3 g 2.677 4 0.022 2.01 2.05 1.0 1.754 2.301 2 Analytical or derived from analytical -- 02/01/2014
Lipids 18:3 n-6 c,c,c 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 18:4 g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids 20:2 n-6 c,c 2, 3 g 0.000 4 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 06/01/2002
Lipids 20:3 undifferentiated 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 20:4 undifferentiated 2 g 0.000 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids 20:5 n-3 (EPA) g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids 22:5 n-3 (DPA) g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids 22:6 n-3 (DHA) g 0.000 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 02/01/1995
Lipids Cholesterol 2 mg 0 1 -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Lipids Stigmasterol 2, 3 mg 1 4 0.000 0 1 1.0 -3.0 4.0 2 Analytical or derived from analytical -- 02/01/2011
Lipids Campesterol 2, 3 mg 5 4 0.000 4 5 1.0 1.0 7.0 2 Analytical or derived from analytical -- 06/01/2002
Lipids Beta-sitosterol 2, 3 mg 115 4 0.000 114 116 1.0 104.0 126.0 2 Analytical or derived from analytical -- 02/01/2014
Amino Acids Tryptophan 1 g 0.318 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Threonine 1 g 0.721 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Isoleucine 1 g 0.966 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Leucine 1 g 1.684 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Lysine 1 g 0.713 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Methionine 1 g 0.467 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Cystine 1 g 0.462 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Phenylalanine 1 g 1.094 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Tyrosine 1 g 0.740 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Valine 1 g 1.271 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Arginine 1 g 3.618 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Histidine 1 g 0.672 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Alanine 1 g 1.048 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Aspartic acid 1 g 2.433 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Glutamic acid 1 g 5.152 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Glycine 1 g 1.189 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Proline 1 g 0.926 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Amino Acids Serine 1 g 1.225 -- -- 0 0 -- -- -- -- Analytical or derived from analytical -- 06/01/2002
Other Alcohol, ethyl g 0.0 -- -- 0 0 -- -- -- -- Assumed zero -- 06/01/2002
Other Caffeine mg 0 -- -- 0 0 -- -- -- -- Assumed zero -- 06/01/2002
Other Theobromine mg 0 -- -- 0 0 -- -- -- -- Assumed zero -- 06/01/2002

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).