The aicorn, or aik nit, is the nit o the aiks an thair close relatives (genera Quercus an Lithocarpus, in the faimily Fagaceae). It uisually conteens a single seed (occasionally twa seeds), enclosed in a teuch, leathery shell, an borne in a cup-shaped cupule. Aicorns are 1–6 cm lang an 0.8–4 cm broad. Acorns tak atween 6 an 24 month (dependin on the species) tae matur.

Aicorns frae smaw tae lairge o the Willae Aik, Quercus phellos (very smaw, at center); the Soothren Reid Aik, Quercus falcata; the White Aik, Quercus alba; an the Scarlet Aik, Quercus coccinea; frae soothren Greenville Coonty, SC, USA. Scale bar at upper richt is 1 cm.
Aicorn, raw
Nutreetional value per 100 g (3.5 oz)
Energy1,619 kJ (387 kcal)
40.75 g
23.85 g
Saturatit3.102 g
Monounsaturatit15.109 g
Polyunsaturatit4.596 g
6.15 g
Tryptophan0.074 g
Threonine0.236 g
Isoleucine0.285 g
Leucine0.489 g
Lysine0.384 g
Methionine0.103 g
Cystine0.109 g
Phenylalanine0.269 g
Tyrosine0.187 g
Valine0.345 g
Arginine0.473 g
Histidine0.170 g
Alanine0.350 g
Aspartic acid0.635 g
Glutamic acid0.986 g
Glycine0.285 g
Proline0.246 g
Serine0.261 g
Vitamin A equiv.
2 μg
Thiamine (B1)
0.112 mg
Riboflavin (B2)
0.118 mg
Niacin (B3)
1.827 mg
Pantothenic acid (B5)
0.715 mg
Vitamin B6
0.528 mg
Folate (B9)
87 μg
Vitamin B12
0.00 μg
Vitamin C
0.0 mg
41 mg
0.79 mg
62 mg
1.337 mg
79 mg
539 mg
0 mg
0.51 mg
Ither constituents
Watter27.9 g

Percentages are approximated uisin US recommendations for adults.
Source: USDA Nutrient Database