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This article is about the spice; for other meanings see clove (disambiguation).
{{Taxobox| color = lightgreen| name = Clove| image = Koeh-030.jpg| image_width = 240px| regnum =
Plantae]| classis =
Magnoliopsida| familia = [Myrtaceae| species = S. aromaticum| binomial = Syzygium aromaticum| binomial_authority = ([Carolus Linnaeus) Merrill & Perry--> bud
Cloves (
Syzygium aromaticum, synonymy
Eugenia aromaticum or
Eugenia caryophyllata) are the aromatic dried flower buds of a tree in the family
Myrtaceae. It is native to Indonesia and used as a spice in cuisine all over the world. The name derives from French
clou, a nail, as the buds vaguely resemble small irregular nails in shape. Cloves are harvested primarily in
Zanzibar,
Indonesia and
Madagascar; it is also grown in
Pakistan, India, and
Sri Lanka.
The clove tree is an evergreen which grows to a height ranging from 10-20 m, having large oval
leaf and crimson flowers in numerous groups of terminal clusters. The flower buds are at first of a pale color and gradually become green, after which they develop into a bright red, when they are ready for collecting. Cloves are harvested when 1.5-2 cm long, and consist of a long
calyx (botany), terminating in four spreading
sepals, and four unopened petals which form a small ball in the centre.
Uses
According to
FAO, Indonesia produced almost 80% of the world's clove output in 2005 followed at a distance by Madagascar and Tanzania.
Cloves can be used in cooking either whole or in a ground form, but as they are extremely strong, they are used sparingly. The spice is used throughout
Europe and
Asia and is smoked in a type of cigarettes locally known as
kretek in Indonesia, mixed with
cannabis (drug) to create marijuana Marijuana cigarettes (zigzags). Cloves are also an important
incense material in Culture of China and Culture of Japan culture.
Cloves have historically been used in Indian cuisine (both
North Indian and South Indian). In the north Indian cuisine, it is used in almost every sauce or side dish made, mostly ground up along with other spices. They are also a key ingredient in tea along with green cardamoms. In the south Indian cuisine, it finds extensive use in the
biryani dish (similar to the
pilaf, but with the addition of local spice taste), and is normally added whole to enhance the presentation and flavor of the rice.
Medicinal Uses
Cloves are used in Ayurveda,
Chinese medicine and western
herbalism and
dentistry where the essential oil is used as an anodyne for dental emergencies. Cloves are used as a carminitive, to increase hydrochloric acid in the stomach and to improve peristalsis. Cloves are also said to be a natural anthelmintic.Balch, Phyllis and Balch, James.
Prescription for Nutritional Healing, 3rd ed., Avery Publishing, ©2000, pg. 94. The essential oil is used in aromatherapy when stimulation and warming is needed, especially for digestive problems. Topical application over the stomach or abdomen will warm the digestive tract.
In Chinese medicine cloves or
ding xiang are considered acrid, warm and aromatic, entering the
kidney, spleen and
stomach channels, and are notable in their ability to warm the middle, direct stomach
qi downward, to treat hiccough and to fortify the, kidney yang.
Chinese Herbal Medicine: Materia Medica, Third Edition by Dan Bensky, Steven Clavey, Erich Stoger, and Andrew Gamble 2004 Because the herb is so warming it is contraindicated in any persons with fire symptoms and according to classical sources should not be used for anything except cold from yang deficiency. As such it is used in formulas for impotence or clear vaginal discharge from yang deficiency, for morning sickness together with ginseng and patchouli, or for vomiting and diarrhea due to spleen and stomach coldness.
Chinese Herbal Medicine: Materia Medica, Third Edition by Dan Bensky, Steven Clavey, Erich Stoger, and Andrew Gamble 2004 This would translate to hypochlorhydria.
(Note that capitalized organ names refer to the Chinese meridians named after them.)Ayurvedic herbalist K.P. Khalsa, RH (AHG), uses cloves internally as a tea and topically as an oil for hypotonic muscles, including for multiple sclerosis. This is also found in Tibetan medicine.http://www.tibetmed.org/questions/question_44.htm Ayurvedic herbalist Alan Tilotson, RH (AHG) suggests avoiding more than occasional use of cloves internally in the presence of
pitta inflammation such as is found in acute flares of autoimmune diseases.http://oneearthherbs.squarespace.com/diseases/special-diets-for-illness.html Tilotson, Alan.
Special Diets for Illness
Toxicity
Large amounts should be avoided in pregnancy. Cloves can be irritating to the GI tract, and should be avoided by people with gastric ulcers, colitis, or IBS. In overdoses, cloves can cause vomiting, nausea, diarrhea, and upper GI hemorrhage. Severe cases can lead to changes in liver function, dyspnea, loss of consciousness, hallucination, and even death.
Chinese Herbal Medicine: Materia Medica, Third Edition by Dan Bensky, Steven Clavey, Erich Stoger, and Andrew Gamble 2004 The internal use of the essential oil should be restricted to 3 drops per day for an adult as excessive use can cause severe kidney damage.
History
Until modern times, cloves grew only on a few islands in the Maluku Islands (historically called the
Spice Islands), including Bacan, Makian, Moti, Ternate, and Tidore. Nevertheless, they found their way west to the Middle East and Europe well before the time of Christ. Archeologists found cloves within a ceramic vessel in Syria along with evidence dating the find to within a few years of
1721 BC.
Cloves, along with nutmeg and
Black pepper, were highly prized in
Roman Empire times, and Pliny the Elder once famously complained that "there is no year in which India does not drain the Roman Empire of fifty million sesterces". Cloves were traded by
Arabs during the Middle Ages in the profitable
Indian Ocean trade. In the late fifteenth century, Portugal took over the Indian Ocean trade, including cloves, due to the
Treaty of Tordesillas with Spain and a separate treaty with the sultan of Ternate. The Portuguese brought large quantities of cloves to Europe, mainly from the Maluku Islands. Clove was then one of the most valuable spices, a
kilogram costing around 7 g of
gold.
The trade later became dominated by the Netherlands in the seventeenth century. With great difficulty the France succeeded in introducing the clove tree into
Mauritius in the year 1770; subsequently their cultivation was introduced into
Guiana, Brazil, most of the West Indies, and Zanzibar, where the majority of cloves are grown today.
In Britain in the seventeenth and eighteenth centuries, cloves were worth at least their weight in gold, due to the high price of importing them.
The clove has become a commercial 'success', with products including clove drops being released and enjoyed by die-hard clove fans.
Active compounds
The compound responsible for the cloves' aroma is eugenol. It is the main component in the essential oil extracted from cloves, comprising 72-90%. Eugenol has pronounced antiseptic and anaesthetic properties. Other important constituents include essential oils acetyl eugenol, beta-caryophylline and
vanillin;
crategolic acid; tannins,
gallotannic acid,
methyl salicylate (painkiller); the
flavanoids eugenin,
kaempferol, rhamnetin, and eugenitin; triterpenoids like
oleanolic acid, stigmasterol and
campesterol; and several sesquiterpenes.
Chinese Herbal Medicine: Materia Medica, Third Edition by Dan Bensky, Steven Clavey, Erich Stoger, and Andrew Gamble. 2004
Notes and references