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Nutmeg nutrition facts

Pleasantly aromatic, nutmeg is actually a seed (kernel) of the fruit from the Myristica fragrans tree. It is one of the highly prized spices known since antiquity for its aromatic, aphrodisiac, and curative properties. Nutmegs are evergreen trees, native to the rainforest of Indonesian Moluccas Island, also known as the Spice Islands.

Botanically, the plant belongs to Myristicaceae family of medium to large trees. Its scientific name is: Myristica fragrans. Besides M. fragrans, several other species of Myristica grown all over the tropical regions including M. argentea, M. malabarica (Indian), and M. fatua. Although they are similar in appearance to M. fragrans, they, however, have less intense flavor and aroma and command less price.

nutmeg and mace nutmeg spice
Raw nutmeg fruit. Note for central seed and "lacy" mace.
(Photo by-giselleai)
Note for golden-orange color "mace" enveloping around the dried whole nutmegs.
Photo courtesy by "Cooking with herbs and spices" book.

This spice tree is a large evergreen plant that thrives well in tropical climates. A fully-grown tree may reach about 50-60 feet in height and is the source of nutmeg and mace, two invaluable spices. The nutmeg fruit, indeed, is a drupe about the size of an apricot which upon ripening splits up to reveal single, centrally situated oval shaped hard kernel famous as "nutmeg spice." This seed (kernel) closely enwrapped by crimson-red, lacy or thread like arils known as "mace." Both spices feature a similar warm, sweet aromatic flavor.


Processing

Nutmeg tree yields up to three times in a season. Once harvested from the tree, its outer coat or husk is removed and discarded. Just underneath the tough husk is the crimon red color aril, known as "mace," which firmly enveloping around the nutmeg kernel. Mace is gently peeled off from its nutmeg surface, flattened into strips, dried, and sold either as a whole (blades) or finely ground powder. Nutmeg kernel is then dried under the sun for several days to weeks. At the larger commercial setups, this process is accomplished rather more rapidly over a hot dryer machine until the whole nutmeg rattles inside the shell.

Its shell is then cut open and a single, shriveled nutmeg kernel is then taken out. Finally, nuts dipped in lime-water in order to prevent insect infestation and seed germination.

Health benefits of nutmeg

  • Nutmeg and mace spice contain many plant-derived chemical compounds that are known to have been antioxidant, disease preventing, and health promoting properties.

  • The spicy nut contains fixed oil trimyristin and many essential volatile oils such as which gives a sweet aromatic flavor to nutmegs such as myristicin, elemicin, eugenol and safrole. The other volatile oils are pinene, camphene, di pentene, cineole, linalool, sabinene, safrole, terpineol.

  • The active principles in nutmeg have many therapeutic applications in many traditional medicines as anti-fungal, anti-depressant, aphrodisiac, digestive, and carminative functions.

  • This spice is a good source of minerals like copper, potassium, calcium, manganese, iron, zinc and magnesium. Potassium is an important component of cell and body fluids that helps control heart rate and blood pressure. The human body uses manganese and copper as co-factors for the antioxidant enzyme, superoxide dismutase. Iron is essential for red blood cell production and as a co-factor for cytochrome oxidases enzymes.

  • It is also rich in many vital B-complex vitamins, including vitamin-C, folic acid, riboflavin, niacin, vitamin-A and many flavonoid anti-oxidants like beta-carotene and cryptoxanthin that are essential for optimum health.

See the table below for in depth analysis of nutrients:

Nutmeg (Myristica fragrans), Ground form, Nutritional value per 100 g.
(Source: USDA National Nutrient data base)

Principle Nutrient Value Percentage of RDA
Energy 525 Kcal 26
Carbohydrates 49.29 g 38%
Protein 5.84 g 10%
Total Fat 36.31 g 180%
Cholesterol 0 mg 0%
Dietary Fiber 20.8 g 55%
Vitamins
Folates 76 µg 19%
Niacin 1.299 mg 8%
Pyridoxine 0.160 mg 12%
Riboflavin 0.057 mg 4%
Thiamin 0.346 mg 29%
Vitamin-A 102 IU 3.5%
Vitamin C 3 mg 5%
Electrolytes
Sodium 16 mg 1%
Potassium 350 mg 7.5%
Minerals
Calcium 184 mg 18%
Copper 1.027 mg 114%
Iron 3.04 mg 38%
Magnesium 183 mg 46%
Manganese 2.900 mg 126%
Phosphorus 213 mg 30%
Zinc 2.15 mg 20%
Phyto-nutrients
Carotene-ß 16 µg --
Crypto-xanthin-ß 90 µg --
Lutein-zeaxanthin 0 µg --

Medicinal uses

  • Since ancient times, nutmeg and its oil were being used in Chinese and Indian traditional medicines for illnesses related to the nervous and digestive systems. The compounds in this spice such as myristicin and elemicin have been soothing as well as stimulant properties on the brain.

  • Nutmeg oil contains eugenol, which has been used in dentistry for toothache relief.

  • The oil is also used as a local massage to reduce muscular pain and rheumatic pain of joints.

  • Freshly prepared decoction with honey has been used to relief for nausea, gastritis, and indigestion ailments.


Selection and storage

dried whole nutmegs
Nutmeg spice-grated section.
Photo courtesy-by Book, Cooking with herbs and spices.

In the stores, one can get the nutmeg kernel as well as its fine powder. Try to buy whole nuts instead of its powder form since oftentimes it may be adulterated with other inferior quality nutmeg varieties. Choose well-sealed pack, from the authentic brands from reputable selling company, which mentions its package and expiry dates.

Once at home, store whole nuts as well as a ground powder inside an airtight container and place cold, dark and dry place, where it can stay for several months.


Culinary uses

Both nutmeg, as well as "mace", is used in cooking recipes. Mace has a delicate flavor and gives saffron- like color to the food items. The whole kernel generally preferred over its powder since it possesses higher essential oils, which thus, give rich flavor and freshness to recipes. In general, completely dried kernels are either grated or milled just before being added at the last minutes of cooking.

nutmeg grater
Nutmegs with grater. (Photo courtesy by-kochtopf)

Here are some serving tips:

  • Nutmeg and mace are being employed in sauces, soups, and in confectionary.

  • Aromatic mace spice is especially used as a colorant and flavoring agent in sweets, pie, cakes, donuts, etc.

  • It is also being used as one of the common ingredients in curry powder to marinate meat and vegetable dishes in many Asian countries.


Safety profile

  • Consumption of nutmeg in large doses may cause lack of concentration, sweating, palpitations, body pain and in severe cases, hallucination and delirium.

  • In very small doses, it may be used safely in pregnancy and lactation.

(Medical disclaimer: The information and reference guides on this website are intended solely for the general information for the reader. It is not to be used to diagnose health problems or for treatment purposes. It is not a substitute for medical care provided by a licensed and qualified health professional. Please consult your health care provider for any advice on medications.)



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Further reading:

  1. USDA National Nutrient Database.

  2. Department of Export Agriculture.

  3. Pubmed.gov

  4. Gernot Katzar's Spice pages.

  5. Cooking with herbs and spices- by Andi Clevely- page 310-311.



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