Known and consumed since prehistorical times, the walnut has various origins, in East Asia, Southeast of Europe, North and South America. There exist more than 15 varieties of Juglans, belonging to the Juglandaceae family, but by far the most delicious and commercially important one is the Juglans Regia, also known as the Persian or English walnut.
The Greeks gave it the name Kara (head), because of the resemblance with the human skull and brains. This similarity is the source of medieval beliefs of the healing properties of the walnut for any kind of head ache.
Today, because of its high concentration of mineral salts and vitamins, it is only fair to consent to its important therapeutical properities.
The world production of walnuts is spread over France, U S.A., China, India, Turkey, Greece, Italy, Spain and Chile. They are marketed in shelled and inshell form with principal uses as snack, dessert, confectionery and for the preparation of several food products, and as a supplement to various culinary recipes.
Refuse: 55% (Shells)
Scientific Name: Juglans regia
Common Name: Includes USDA commodity food A259, A257
NDB No: 12155 (Nutrient values and weights are for edible portion)
|
| |
Nutrient |
Units |
Value per100 grams |
Numberof DataPoints |
Std.Error |
| Proximates |
| Water |
g |
4.07 |
7 |
0.155 |
| Energy |
kcal |
654 |
0 |
0 |
| Energy |
kJ |
2738 |
0 |
0 |
| Protein |
g |
15.23 |
7 |
0.238 |
| Total lipid (fat) |
g |
65.21 |
7 |
0.494 |
| Ash |
g |
1.78 |
7 |
0.019 |
| Carbohydrate, by difference |
g |
13.71 |
0 |
0 |
| Fiber, total dietary |
g |
6.7 |
7 |
0.549 |
| Sugars, total |
g |
2.61 |
7 |
0.094 |
| Sucrose |
g |
2.43 |
7 |
0.087 |
| Glucose (dextrose) |
g |
0.08 |
7 |
0.014 |
| Fructose |
g |
0.09 |
7 |
0.011 |
| Lactose |
g |
0.00 |
7 |
0 |
| Maltose |
g |
0.00 |
7 |
0 |
| Starch |
g |
0.06 |
7 |
0.011 |
| Minerals |
| Calcium, Ca |
mg |
98 |
7 |
3.009 |
| Iron, Fe |
mg |
2.91 |
7 |
0.086 |
| Magnesium, Mg |
mg |
158 |
7 |
1.204 |
| Phosphorus, P |
mg |
346 |
7 |
3.689 |
| Potassium, K |
mg |
441 |
7 |
6.471 |
| Sodium, Na |
mg |
2 |
7 |
0.837 |
| Zinc, Zn |
mg |
3.09 |
7 |
0.083 |
| Copper, Cu |
mg |
1.586 |
7 |
0.026 |
| Manganese, Mn |
mg |
3.414 |
7 |
0.122 |
| Selenium, Se |
mcg |
4.9 |
6 |
0.417 |
| Vitamins |
| Vitamin C, total ascorbic acid |
mg |
1.3 |
7 |
0.184 |
| Thiamin |
mg |
0.341 |
7 |
0.01 |
| Riboflavin |
mg |
0.150 |
7 |
0.003 |
| Niacin |
mg |
1.125 |
8 |
0.055 |
| Pantothenic acid |
mg |
0.570 |
7 |
0.011 |
| Vitamin B-6 |
mg |
0.537 |
7 |
0.026 |
| Folate, total |
mcg |
98 |
7 |
3.889 |
| Folic acid |
mcg |
0 |
0 |
0 |
| Folate, food |
mcg |
98 |
7 |
3.889 |
| Folate, DFE |
mcg_DFE |
98 |
0 |
0 |
| Choline, total |
mg |
39.2 |
0 |
0 |
| Betaine |
mg |
0.3 |
5 |
0.019 |
| Vitamin B-12 |
mcg |
0.00 |
0 |
0 |
| Vitamin B-12, added |
mcg |
0.00 |
0 |
0 |
| Vitamin A, RAE |
mcg_RAE |
1 |
6 |
0.613 |
| Retinol |
mcg |
0 |
0 |
0 |
| Carotene, beta |
mcg |
12 |
6 |
7.358 |
| Carotene, alpha |
mcg |
0 |
6 |
0 |
| Cryptoxanthin, beta |
mcg |
0 |
3 |
0 |
| Vitamin A, IU |
IU |
20 |
6 |
12.264 |
| Lycopene |
mcg |
0 |
3 |
0 |
| Lutein + zeaxanthin |
mcg |
9 |
3 |
0.18 |
| Vitamin E (alpha-tocopherol) |
mg |
0.70 |
13 |
0.321 |
| Vitamin E, added |
mg |
0.00 |
0 |
0 |
| Tocopherol, beta |
mg |
0.15 |
13 |
0.146 |
| Tocopherol, gamma |
mg |
20.83 |
13 |
2.609 |
| Tocopherol, delta |
mg |
1.89 |
13 |
0.466 |
| Vitamin K (phylloquinone) |
mcg |
2.7 |
8 |
0.253 |
| Lipids |
| Fatty acids, total saturated |
g |
6.126 |
0 |
0 |
4:00 |
g |
0.000 |
0 |
0 |
6:00 |
g |
0.000 |
0 |
0 |
8:00 |
g |
0.000 |
7 |
0 |
10:00 |
g |
0.000 |
7 |
0 |
12:00 |
g |
0.000 |
7 |
0 |
13:00 |
g |
0.000 |
7 |
0 |
14:00 |
g |
0.000 |
7 |
0 |
15:00 |
g |
0.000 |
7 |
0 |
16:00 |
g |
4.404 |
7 |
0.095 |
17:00 |
g |
0.000 |
7 |
0 |
18:00 |
g |
1.659 |
7 |
0.035 |
20:00 |
g |
0.063 |
7 |
0 |
22:00 |
g |
0.000 |
7 |
0 |
24:00:00 |
g |
0.000 |
7 |
0 |
Fatty acids, total monounsaturated |
g |
8.933 |
0 |
0 |
14:01 |
g |
0.000 |
7 |
0 |
16:1 undifferentiated |
g |
0.000 |
7 |
0 |
18:1 undifferentiated |
g |
8.799 |
7 |
0.138 |
20:01 |
g |
0.134 |
7 |
0.008 |
22:1 undifferentiated |
g |
0.000 |
7 |
0 |
24:1 c |
g |
0.000 |
7 |
0 |
Fatty acids, total polyunsaturated |
g |
47.174 |
0 |
0 |
18:2 undifferentiated |
g |
38.093 |
7 |
0.304 |
18:3 undifferentiated |
g |
9.080 |
7 |
0.179 |
18:04 |
g |
0.000 |
0 |
0 |
20:2 n-6 c,c |
g |
0.000 |
7 |
0 |
20:3 undifferentiated |
g |
0.000 |
7 |
0 |
20:4 undifferentiated |
g |
0.000 |
7 |
0 |
20:5 n-3 |
g |
0.000 |
7 |
0 |
22:5 n-3 |
g |
0.000 |
7 |
0 |
22:6 n-3 |
g |
0.000 |
7 |
0 |
Cholesterol |
mg |
0 |
0 |
0 |
Phytosterols |
mg |
72 |
3 |
0.647 |
Stigmasterol |
mg |
1 |
3 |
0.187 |
Campesterol |
mg |
7 |
3 |
0.369 |
Beta-sitosterol |
mg |
64 |
3 |
1.374 |
Amino acids |
Tryptophan |
g |
0.170 |
0 |
0 |
Threonine |
g |
0.596 |
0 |
0 |
Isoleucine |
g |
0.625 |
0 |
0 |
Leucine |
g |
1.170 |
0 |
0 |
Lysine |
g |
0.424 |
0 |
0 |
Methionine |
g |
0.236 |
0 |
0 |
Cystine |
g |
0.208 |
0 |
0 |
Phenylalanine |
g |
0.711 |
0 |
0 |
Tyrosine |
g |
0.406 |
0 |
0 |
Valine |
g |
0.753 |
0 |
0 |
Arginine |
g |
2.278 |
0 |
0 |
Histidine |
g |
0.391 |
0 |
0 |
Alanine |
g |
0.696 |
0 |
0 |
Aspartic acid |
g |
1.829 |
0 |
0 |
Glutamic acid |
g |
2.816 |
0 |
0 |
Glycine |
g |
0.816 |
0 |
0 |
Proline |
g |
0.706 |
0 |
0 |
Serine |
g |
0.934 |
0 |
0 |
Other |
Alcohol, ethyl |
g |
0.0 |
0 |
0 |
Caffeine |
mg |
0 |
0 |
0 |
Theobromine |
mg |
0 |
0 |
0 |
|
|
|
|
Unroasted
Source: USDA National Nutrient Database for Standard Reference, Release 21 (2008)
g = gram
mg = milligram
mcg = microgram
IU = International Units
