United States Department of Agriculture
Agricultural Research Service

National Nutrient Database for Standard Reference Release 28
Statistics Report:  12220, Seeds, flaxseed a  b 
heading Nutrient Unit Value (100g) Data Points Std. Error Min Max df LB UB # Studies Source NDB Ref Last Modified
Proximates Water 2, 3 g 6.96 3 1.636 5.32 8.89 1.0 -13.834 27.747 2 Analytical or derived from analytical -- 03/2005
Proximates Energy kcal 534 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Proximates Energy kJ 2234 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Proximates Protein 1, 2, 3 g 18.29 7 0.917 16.96 21.31 2.0 14.339 22.233 3 Analytical or derived from analytical -- 03/2005
Proximates Total lipid (fat) 1, 3 g 42.16 6 3.188 36.81 45.84 1.0 1.661 82.664 2 Analytical or derived from analytical -- 03/2005
Proximates Ash 2, 3 g 3.72 3 0.026 3.42 4.07 1.0 3.395 4.044 2 Analytical or derived from analytical -- 03/2005
Proximates Carbohydrate, by difference g 28.88 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Proximates Fiber, total dietary 2, 3 g 27.3 3 0.323 25.3 28.6 1.0 23.179 31.376 2 Analytical or derived from analytical -- 03/2005
Proximates Sugars, total g 1.55 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 11/2006
Proximates Sucrose 2, 3 g 1.15 3 0.310 0.84 1.51 1.0 -2.788 5.088 2 Analytical or derived from analytical -- 03/2005
Proximates Glucose (dextrose) 2, 3 g 0.40 3 0.190 0.21 0.73 1.0 -2.014 2.814 2 Analytical or derived from analytical -- 03/2005
Proximates Fructose 2, 3 g 0.00 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Proximates Lactose 2, 3 g 0.00 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Proximates Maltose 2, 3 g 0.00 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Proximates Galactose g 0.00 -- -- -- -- -- -- -- -- Assumed zero -- 02/2003
Minerals Calcium, Ca 1, 2, 3 mg 255 7 35.614 200 340 2.0 102.024 408.492 3 Analytical or derived from analytical -- 03/2005
Minerals Iron, Fe 1, 2, 3 mg 5.73 7 0.555 3.67 7.32 2.0 3.342 8.114 3 Analytical or derived from analytical -- 03/2005
Minerals Magnesium, Mg 1, 2, 3 mg 392 7 20.100 354 431 2.0 305.151 478.116 3 Analytical or derived from analytical -- 03/2005
Minerals Phosphorus, P 2, 3 mg 642 3 20.250 603 722 1.0 384.949 899.551 2 Analytical or derived from analytical -- 03/2005
Minerals Potassium, K 1, 2, 3 mg 813 7 9.340 673 1,004 2.0 772.929 853.304 3 Analytical or derived from analytical -- 03/2005
Minerals Sodium, Na 1, 2, 3 mg 30 7 3.989 21 45 2.0 12.58 46.903 3 Analytical or derived from analytical -- 03/2005
Minerals Zinc, Zn 1, 2, 3 mg 4.34 7 0.118 3.95 4.92 2.0 3.834 4.851 3 Analytical or derived from analytical -- 03/2005
Minerals Copper, Cu 1, 2, 3 mg 1.220 7 0.075 1.07 1.52 2.0 0.897 1.542 3 Analytical or derived from analytical -- 03/2005
Minerals Manganese, Mn 1, 2, 3 mg 2.482 7 0.186 1.64 3.08 2.0 1.679 3.284 3 Analytical or derived from analytical -- 03/2005
Minerals Selenium, Se 3 µg 25.4 2 -- 4.8 46 1.0 -- -- 1 Analytical or derived from analytical -- 03/2005
Vitamins Vitamin C, total ascorbic acid 2, 3 mg 0.6 3 0.108 0.5 0.7 1.0 -0.73 2.005 2 Analytical or derived from analytical -- 03/2005
Vitamins Thiamin 2, 3 mg 1.644 3 1.111 0.53 3.2 1.0 -12.472 15.76 2 Analytical or derived from analytical -- 03/2005
Vitamins Riboflavin 2, 3 mg 0.161 3 0.071 0.07 0.23 1.0 -0.741 1.063 2 Analytical or derived from analytical -- 03/2005
Vitamins Niacin 2, 3 mg 3.080 3 0.130 2.7 3.21 1.0 1.428 4.732 2 Analytical or derived from analytical -- 03/2005
Vitamins Pantothenic acid 2, 3 mg 0.985 3 0.415 0.57 1.4 1.0 -4.287 6.257 2 Analytical or derived from analytical -- 03/2005
Vitamins Vitamin B-6 2, 3 mg 0.473 3 0.138 0.3 0.61 1.0 -1.275 2.22 2 Analytical or derived from analytical -- 03/2005
Vitamins Folate, total 2, 3 µg 87 3 24.975 35 112 1.0 -230.313 404.363 2 Analytical or derived from analytical -- 03/2005
Vitamins Folic acid µg 0 -- -- -- -- -- -- -- -- Assumed zero -- 01/2001
Vitamins Folate, food µg 87 3 24.975 35 112 1.0 -230.313 404.363 2 Analytical or derived from analytical -- 11/2006
Vitamins Folate, DFE µg 87 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Vitamins Choline, total 3 mg 78.7 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 11/2006
Vitamins Betaine 3 mg 3.1 1 -- -- -- -- -- -- -- Analytical or derived from analytical -- 11/2006
Vitamins Vitamin B-12 2 µg 0.00 1 -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Vitamins Vitamin B-12, added µg 0.00 -- -- -- -- -- -- -- -- Assumed zero -- 09/2004
Vitamins Vitamin A, RAE 2, 3 µg 0 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Vitamins Retinol µg 0 -- -- -- -- -- -- -- -- Assumed zero -- 06/2002
Vitamins Carotene, beta 2, 3 µg 0 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Vitamins Carotene, alpha 2, 3 µg 0 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Vitamins Cryptoxanthin, beta 3 µg 0 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Vitamins Vitamin A, IU 2, 3 IU 0 3 0.000 0 0 -- -- -- 2 Analytical or derived from analytical -- 03/2005
Vitamins Lycopene 3 µg 0 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Vitamins Lutein + zeaxanthin 1 µg 651 9 52.611 500 970 8.0 529.79 772.432 1 Analytical or derived from analytical -- 03/2003
Vitamins Vitamin E (alpha-tocopherol) 1, 3 mg 0.31 6 0.006 0.23 0.45 1.0 0.235 0.387 2 Analytical or derived from analytical -- 03/2005
Vitamins Vitamin E, added mg 0.00 -- -- -- -- -- -- -- -- Assumed zero -- 09/2004
Vitamins Tocopherol, beta 3 mg 0.00 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Vitamins Tocopherol, gamma 1, 3 mg 19.95 6 5.066 14.34 25.83 1.0 -44.422 84.314 2 Analytical or derived from analytical -- 03/2005
Vitamins Tocopherol, delta 1, 3 mg 0.35 6 0.131 0.21 0.55 1.0 -1.316 2.008 2 Analytical or derived from analytical -- 03/2005
Vitamins Vitamin D (D2 + D3) µg 0.0 -- -- -- -- -- -- -- -- Assumed zero -- 03/2009
Vitamins Vitamin D IU 0 -- -- -- -- -- -- -- -- Assumed zero -- 03/2009
Vitamins Vitamin K (phylloquinone) 3 µg 4.3 2 -- 3.7 4.8 1.0 -- -- 1 Analytical or derived from analytical -- 03/2005
Lipids Fatty acids, total saturated g 3.663 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Lipids 4:0 g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 6:0 g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 8:0 3 g 0.000 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Lipids 10:0 3 g 0.000 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Lipids 12:0 3 g 0.000 2 -- 0 0 -- -- -- 1 Analytical or derived from analytical -- 03/2005
Lipids 14:0 2, 3 g 0.008 3 0.008 0 0.02 1.0 -0.093 0.109 2 Analytical or derived from analytical -- 03/2005
Lipids 15:0 2 g 0.005 1 -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Lipids 16:0 1, 2, 3 g 2.165 7 0.191 1.67 2.58 2.0 1.344 2.986 3 Analytical or derived from analytical -- 03/2005
Lipids 17:0 2 g 0.018 1 -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Lipids 18:0 1, 2, 3 g 1.330 7 0.064 1.12 1.71 2.0 1.056 1.604 3 Analytical or derived from analytical -- 03/2005
Lipids 20:0 2, 3 g 0.052 3 0.005 0.04 0.06 1.0 -0.018 0.121 2 Analytical or derived from analytical -- 03/2005
Lipids 22:0 2, 3 g 0.052 3 0.011 0.04 0.06 1.0 -0.093 0.198 2 Analytical or derived from analytical -- 03/2005
Lipids 24:0 2, 3 g 0.031 3 0.001 0.03 0.03 1.0 0.025 0.038 2 Analytical or derived from analytical -- 03/2005
Lipids Fatty acids, total monounsaturated g 7.527 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Lipids 16:1 undifferentiated 2, 3 g 0.024 3 0.006 0.02 0.03 1.0 -0.051 0.098 2 Analytical or derived from analytical -- 03/2005
Lipids 18:1 undifferentiated 1, 2, 3 g 7.359 7 0.132 6.86 7.91 2.0 6.791 7.926 3 Aggregated data involving combinations of source codes 1 &12 -- 03/2005
Lipids 20:1 2, 3 g 0.067 3 0.016 0.05 0.08 1.0 -0.131 0.264 2 Analytical or derived from analytical -- 03/2005
Lipids 22:1 undifferentiated 2, 3 g 0.013 3 0.013 0 0.03 1.0 -0.157 0.184 2 Analytical or derived from analytical -- 03/2005
Lipids 24:1 c 2, 3 g 0.064 3 0.056 0.01 0.12 1.0 -0.643 0.772 2 Analytical or derived from analytical -- 03/2005
Lipids Fatty acids, total polyunsaturated g 28.730 -- -- -- -- -- -- -- -- Calculated or imputed -- 11/2006
Lipids 18:2 undifferentiated 1, 2, 3 g 5.903 7 0.341 5.17 6.67 2.0 4.437 7.369 3 Aggregated data involving combinations of source codes 1 &12 -- 03/2005
Lipids 18:3 undifferentiated 1, 2, 3 g 22.813 7 1.439 18.7 26.23 2.0 16.623 29.003 3 Aggregated data involving combinations of source codes 1 &12 -- 03/2005
Lipids 18:4 g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 20:2 n-6 c,c 2, 3 g 0.007 3 0.007 0 0.01 1.0 -0.087 0.102 2 Analytical or derived from analytical -- 03/2005
Lipids 20:4 undifferentiated g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 20:5 n-3 (EPA) g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 22:5 n-3 (DPA) g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids 22:6 n-3 (DHA) g 0.000 -- -- -- -- -- -- -- -- Calculated or imputed -- 03/2005
Lipids Cholesterol mg 0 -- -- -- -- -- -- -- -- Assumed zero -- 12/1997
Lipids Stigmasterol 3 mg 11 2 -- 9 14 1.0 -- -- 1 Analytical or derived from analytical -- 05/2011
Lipids Campesterol 3 mg 45 2 -- 40 50 1.0 -- -- 1 Analytical or derived from analytical -- 05/2011
Lipids Beta-sitosterol 3 mg 90 2 -- 84 96 1.0 -- -- 1 Analytical or derived from analytical -- 05/2011
Amino Acids Tryptophan 1, 3 g 0.297 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Threonine 1, 3 g 0.766 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Isoleucine 1, 3 g 0.896 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Leucine 1, 3 g 1.235 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Lysine 1, 3 g 0.862 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Methionine 1, 3 g 0.370 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Cystine 1, 3 g 0.340 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Phenylalanine 1, 3 g 0.957 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Tyrosine 1, 3 g 0.493 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Valine 1, 3 g 1.072 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Arginine 1, 3 g 1.925 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Histidine 1, 3 g 0.472 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Alanine 1, 3 g 0.925 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Aspartic acid 1, 3 g 2.046 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Glutamic acid 1, 3 g 4.039 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Glycine 1, 3 g 1.248 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Proline 1, 3 g 0.806 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Serine 1, 3 g 0.970 -- -- -- -- -- -- -- -- Analytical or derived from analytical -- 03/2005
Amino Acids Hydroxyproline 3 g 0.175 2 -- 0.13 0.22 1.0 -- -- 1 Analytical or derived from analytical -- 03/2005
Other Alcohol, ethyl g 0.0 -- -- -- -- -- -- -- -- Assumed zero -- 12/1997
Other Caffeine mg 0 -- -- -- -- -- -- -- -- Assumed zero -- 02/2001
Other Theobromine mg 0 -- -- -- -- -- -- -- -- Assumed zero -- 02/2001
Isoflavones Daidzein 4, 5 mg 0.01 4 0.03 0 0.06 -- -- -- -- -- --
Isoflavones Genistein 4, 5 mg 0.04 4 0.08 0 0.17 -- -- -- -- -- --
Isoflavones Glycitein 4 mg 0.06 1 -- 0.06 0.06 -- -- -- -- -- --
Isoflavones Total isoflavones 4, 5 mg 0.07 4 0.13 0 0.29 -- -- -- -- -- --
Isoflavones Biochanin A mg 0.00 3 0 0 0 -- -- -- -- -- --
Isoflavones Formononetin mg 0.02 4 0.02 0 0.03 -- -- -- -- -- --
Isoflavones Coumestrol mg 0.02 4 0.03 0 0.05 -- -- -- -- -- --

Sources of Data

1J.K. Daun, R. Przybylski Environmental effects on the composition of four Canadian flax cultivars , 2000 Proceedings of the 58th Meeting of the Flax Institute of the United States    pp.80-91
2Flax Council of Canada Nutrient Analysis of Flaxseed by Medallion Lab , 1997  Winnipeg  
3Nutrient Data Laboratory, ARS, USDA National Food and Nutrient Analysis Program Wave 7h , 2003  Beltsville MD  
4Thompson, L. U., Boucher, B. A., Liu, Z., Cotterchio, M., and Kreiger, N. Phytoestrogen content of foods consumed in Canada, including isoflavones, lignans, and coumestan. , 2006 Nutr. Cancer 54   pp.184-201
5Mazur, W., Fotsis, T., Wähälä, K., Ojala, S., Salakka, A. and Adlercreutz, H. Isotope dilution gas chromatographic-mass spectrometric method for the determination of isoflavonoids, coumestrol, and lignans in food samples. , 1996 Anal. Biochem. 233   pp.169-180

Footnotes

a  Up to 12 percent flax seed can safely be used as an ingredient in food.
b  Other phytosterols = 49.0 mg/100g; these include delta 5-avenasterol (21.2), campestanol (2.8), brassicasterol (1.1) and other minor phytosterols (23.9 mg).