The practice of ethnomedicine in the Northern and Southern provinces of Oman.
In Oman, the information on traditional ethnomedicine practice is not transferred from generation to generation in written form but is verbally inherited from the elder members of the family. Traditional medicine is still widely used to treat minor illnesses like colds, fevers, stomach problems, and headaches, even with the availability of primary and secondary healthcare. The elders or trained traditional healers have the right to administer traditional medicines in the society.The Unani tibb is the base of traditional Islamic medicine and depends on the humoral system, a Graeco-Arab style of medicine. (1,2) It is believed to be derived from the ancient Greek medicinal system where the four elements (earth, water, air, and fire) correspond to blood, phlegm, yellow bile, and black bile in the body. A healthy body is considered to have an equilibrium between the four humors and any imbalance may result in sickness. The Greek physician Hippocrates linked the four humors to four basic temperaments and evolved the ancient medical concept of humorism. (3,4) These temperaments were sanguine (element: air, people: social type), choleric (element: fire, people: short tempered and extroverts), melancholic (element: earth, people: serious and introverts), and phlegmatic (element: water, people: relaxed and peaceful)
In some Omani villages, when doctors are rare, a hakim (wiseman) dispenses herbal and other forms of medication. The practice is based on practical, common-sense cures derived from some empiric knowledge. Traditional Omani healers base their diagnosis and treatment on the ancient Greek ideas of health and illness as described by Aristotle (5) and adapted by medieval Arab medical practitioners. The West used the Greek model for centuries too.
The Oman Animal and Plant Genetic Resource Center (OAPGRC) (6) was established in 2012 and has been involved in making action plans for the conservation and maintenance of Oman's genetic resources like animals, medicinal plants, marine species, and microorganisms. The first Indian Ocean Rim Association's meeting on medicinal plants was conducted in July 2014, during which the participating countries signed the Salalah Declaration on Applied Research, Technology Transfer and Commercialization of Medicinal Plants and Traditional Medicine.
The hilly ranges at Jebel Akdhar and Dhofar are rich with remarkable flora and fauna and comprise of migratory birds and valuable medicinal plants. The Jebel Akdhar area in Oman, from which medicinal plant data was gathered, is situated at latitude 23.3[degrees] 19.8' N and longitude 57.88[degrees] 52.8'E and 2000 m above sea level. It is one of the highest points in Oman and surrounded by the Al-Hajar mountain range. Dhofar occupies the southernmost province of Oman, famous for its frankincense (luban) trade. Salalah is the capital of Dhofar governorate. Dhofar is situated at latitude 18[degrees], 23.8' N and longitude 54[degrees], 26.1'E and 1200 m above sea level.
[FIGURE 1 OMITTED]
Survey methodology
We conducted this review between September 2013 and August 2014. Relevant information (6-9) was collected through a literature survey of the published ethnobotanical and biodiversity books, monographs or papers on herbal medicines found in the Jebel Akdhar and Dhofar regions of Oman
Additionally, interviews were conducted in villages with the traditional medicine people, folklore groups, and native informants to gather information on the inherited knowledge and empiric experiences about the healing properties of local plants. Each herbal traditional use/evidence was considered authentic only after validation through three or more informants from village localities and cross checking the information at different times. Samples of all medicinal plants were identified and authenticated by experts on plants' taxonomy at the Department of Science, Higher College of Technology, Muscat.
The mode of preparation of the crude drugs and the methods of their administration were recorded. Most plants are used as infusions, decoctions, pastes, or inhalants.
The Dhofar plains form a wide coastal belt between the mountain ridges and the Arabian sea and stretches around 20-25 km. They are composed of marine and aeolian sand and alluvial limestone gravels and are navigated by a network of several wadis that drain out from the mountains. The soils in such areas are shallow and support vegetation of xerophytic shrubs. The genus, species, and families of the identified herbs are arranged in alphabetical order [Table 1].
[FIGURE 2 OMITTED]
The majority of Omani traditional treatments include lime, honey, and garlic (10) as herbal additives for treating wounds, the common cold, throat infections, diabetes, and obesity.
Aqueous decoctions of the herbs like cinnamon bark, (11) cloves, (12) true myrtles, (13) frankincense, (14) and ginger (15) are used to treat infections of the respiratory tract and stomach disorders. Leaf and stem decoctions of the plant Teucrium mascatense are used in traditional Omani medicine as a febrifuge [Figure 1]. (16,17)
The traditional wisdom accumulated over generations of trial and error may result in fatal errors due to ignorance of the toxicities of plant chemical compounds. For example, certain plant chemical compounds are more concentrated at particular times of day, due to diurnal variations, so preparing the correct concentration or dilution of natural herbal treatment is essential.
Rose water (18) is used in folk medicine mainly for eye disorders as well as an astringent and cardiac and cephalic tonic. Thyme (19) and juniper (20) are utilized for their carminative, digestive, diuretic, and spasmolytic properties. Hemp (21) or al keefis used in traditional medicine as an astringent, sedative, anesthetic, and retentive. Solanum incarnum (22) or bitter apple is used for earache and hemorrhoids. Myrtle or Myrtus communis (22) which is calledyas in Arabic, grows on the banks of the wadis (valleys that are dry except following rains), and is used for the cure of ulcers, burns, and scorpion stings. Senna leaves (Sana makki) (24) are used widely as a laxative. Ocimum basilicum, (25) otherwise known as sweet basil, is an important plant rich in its thymol content. The sweet basil is used widely in Oman by local healers as a cure for the common cold, eye infections, and sore throat. The oil is made by boiling the leaves of juniper and wild olives with fixed oils are used effectively by the local hakims for the treatment of pain from mountain climbing. The aqueous leaf extract of Euryops arabicus (26) or kabouv is used as an analgesic.
[FIGURE 3 OMITTED]
Cumin seeds (kimoon) are used to improve the appetite. (27) Papaya fruit juice is used to treat diarrhea and walnut leaf juice is applied topically for calm skin conditions like eczema. The leaves and seeds of papaya are used to treat diarrhea. (28)
Frankincense, otherwise known as Boswellia carteri (14) [Figure 2] is a useful Omani traditional remedy for bronchitis, and can be used as a tonic for cleansing the digestive system, a mouth cleanser, for asthma and ulcers, and as a diuretic. The plant is found largely in the Dhofar region. Solanum incanum (29,30) is known as sharinjiban or mazi and used to treat hemorrhoids and eye and ear infections.
[FIGURE 4 OMITTED]
[FIGURE 5 OMITTED]
A decoction made from ginger roots (15) is used mainly to relieve stomach ailments in the traditional practices. Datura seed decoction (31,32) is used as a sedative or sometimes to treat asthma and the tree sap of Ficus cordata (Tha'ab) (36) is used in bites, boils, and burns.
Acridocarpus orientalis (23) is used by the locals of the Jebel Akdhar mountain range and also in the sandy plains of western Gulf countries like Oman, Yemen, and the UAE, for headaches. A poultice or paste is made from the crushed seeds and applied to the forehead to relieve headache. In Oman, villagers use the seeds of this plant as a source of yellow dye. Citrullus colocynth (22,34) is found scattered in the sandy soil of desert plains bearing green and yellow round gourd included in Cucurbitaceae family. The fruits have astringent and laxative properties. Traditional healers used the fruit juice as a remedy for insect and dog bites. The leaf juice of the walnut plant (Joz or nakash) (35,36) is used to treat skin infections and eczema.
In traditional practices, the smoke from the dried leaves of harmal (Rhazya stricta) (37) are inhaled to treat bronchial infections. Harmal is also used for treating eye infections, skin rashes, worm infestations, and in diabetes.
Moringaperegrina, (38) otherwise known as miracle tree or shu, is mainly used for nutrition, and the crushed seeds are used to cure constipation and other stomach ailments. The shu oil is used traditionally for bone setting by applying it to the skin. The milky sap extract from the Calotropisprocera plant is used in folk medicine for arthritis [Figure 3]. (39)
[FIGURE 6 OMITTED]
[FIGURE 7 OMITTED]
The dried Isqal juice obtained from the common garden aloe plants (Aloe barbedensis) (40) is used for its cleansing, antimicrobial and wound healing properties. The fresh juice obtained from the plant is useful for eye infections. A decoction of the stem of the plant Lycium shawii, (41) known asgharqad, is used to purify and detoxify the digestive and circulatory systems.
The folk medicine men of Oman frequently use resins, latex, and tree saps to dress wounds arising from burns, bites, and boils. The commonly used plants are Acacia gerardii [Figure 4],42 Euphorbia larica [Figure 5] (43) and Ficus cordata. (36)
Prosopis cineraria (44) is a very popular plant, the gum and resins of which are useful as an astringent and demulcent. Also, date palms (Phoenix dactylifera) (45,46) are considered a general tonic, rejuvenator, and cooling agent in traditional medicine practice. A xerophytic plant which can be found abundantly in the Al Fazayeh region of Dhofar is Carallumaflava. (47) Natives use these cactus varieties to suppress hunger, stomach ailments and as a general tonic.
[FIGURE 8 OMITTED]
Summary
This review focused on the folklore information available on medicinal plants in Oman. We identified 33 medicinal plants routinely used in the folk medicine practice. These plants are included in 22 plant families and 18 traditional treatment groups. Most of the plants are used as infusions, pastes, or inhalants.
Aloes and Senna are the most common laxatives used to relieve constipation in folklore medicine. Rose water, clove, Teucrium plants, and Ocimum herbs and shrubs are the major antimicrobial agents. Plants like garlic, cat thyme, arabicum, and Lycium are used for their antipyretic and antiinflammatory properties. Acidocarpus, Euryops and Teucrium are utilized for their analgesic activity, and the plant Teucrium is a good bitter tonic. Datura seeds, Boswellia, cinnamon, and garlic are utilized for respiratory tract infections. Plants like Calotropis, cinnamon, garlic and true myrtle are used as antiarthritic and antirheumatic agents.
[FIGURE 9 OMITTED]
Acacia gerardii, Ficus cordata [Figure 6], Euphorbia larica, and Ocimum basillicum, are used for bites, boils, and burns, and Juglans cinerea (walnut) for skin infections and eczema. Datura seeds and cannabis are used as sedatives. The smoke from the dried leaves of Rhazya stricta [Figure 7] is inhaled from a pipe for chest ailments. Citrullus colocynthis [Figure 8] are used for dog and insect bites, while Myrtus communis is used for scorpion stings. Solanum incanum [Figure 9] is utilized for its antihemorrhagic activity, and Lycium shawii is a traditional detoxifying agent.
CONCLUSIONS
The paper provides a report on ethnomedicinal uses of some important plants locally available for curing various ailments found in the Jebel Akdhar and Dhofar regions of Oman. The medicinal plants present in these areas are still not fully explored. The curative and palliative effects of some herbs, minerals, and animal parts are well acknowledged among the rural or tribal populations throughout the world, and this information is typically passed on from one generation to another in the folklore community.
In most instances, the traditional medicine acts as the basic level of contact for rural people when they require medical attention. It is important for governments to take urgent steps to introduce the use of traditional medicine to supplement primary health care. Deforestation at the scrub jungles may result in an added damage to the vegetation of the hilly areas and the valleys along with other environmental hazards. The valuable endangered medicinal plants present over these areas will be extinct in the near future if they are not conserved.
Ethnomedicine is considered the origin of all traditional and complementary systems of medicine and even for modern medicine. Ethnomedicine surveys are considered to be useful for the scientific community to provide basic evidence for the therapeutic value and safety of herbal medication.
ARTICLE INFO
Article history:
Received: 4 February 2016
Accepted: 22 May 2016
Online:
DOI 10.5001/omj.2016.49
Disclosure
The authors declared no conflicts of interest. No funding was received for this study.
Acknowledgements
The authors are thankful to all the native medicine men who provided valuable information on herbs and their use.
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Madhu. C. Divakar *, Amani Al-Siyabi, Shirley. S. Varghese and Mohammed Al-Rubaie
Herbal Drug Division, Directorate of Pharmaceutical Affairs and Drug Control, Ministry of Health, Muscat, Oman
Table 1: Traditional medicines of Oman Name of the Local name Botanical name herb (Arabic) (family name) Rose water Ward Rosa damascena (Rosaceae) Garlic Thom, Allium sativum kurath (Tilliaceae) Thyme Zaater Thymus vulgaris (Tabiatae) Acridocarpus Qafas Acridocarpus orientalis (Malpighiaceae) Cinnamon Qurfa Cinnamomum zeylanicum (Taraceae) Clove Qurnfel Eugenia caryophyllus (Myrtaceae) Hemp Al-keef Cannabis sativa (Cannabinaceae) True myrde Yas Myrtus communis (Myrtaceae) Senna leaves Sana makki Cassia acutifolia (Teguminosae) Juniper Arar Juniper excelsa (Cupressaceae) Frankincense Mohor, Boswellia carteri or B.sacra Sheehaz (Burseraceae) mogar Mountain/felty Kalpooreh, Teucrium mascatense germander qasba (Lamiaceae) or Cat thyme Bitter apple Sharinjiban, Solatium incanum mazi (Solanaceae) St Joseph's wort, Theemran Ocimum basilicum sweet basil zawab (Tamiaceae) Jacobeastrum Kabouv Euryops arabicus arabicum (Compositae) Cumin Kimoon or Cuminum cyminum Sanoot (Umbelliferae) Papaya fruits Pawpaw or Carica papaya fifay (Caricaceae) Walnuts Joz or nakash Juglans cinerea (Juglandaceae) Rhazya Harmal Rhazya stricta (Apocynaceae) Miracle tree Shu Moringa peregrina (Moringaceae) Aloe plant Isqafsabbar Aloe barbedensis A.clhofarensis,A.innermis (Lilliaceae) Lycium gharqad Lycium shawii (Solanaceae Bitter apple handal Citrullus colocynthis (Cucurbitaceae) Spurge tree Labna Euphorbia larica (Tuphorbiaceae) Rubber bush shakr Calotropis procera Camel weed (Asclepicfaceae) Thorn apple/ Mazi Solatium incanum N ight shade (Solanaceae) Ginger Zanjabil Zingiber officinale (Zingiberaceae) Angels trumpet Tatorah Datura metel (Solanaceae) Namaqua fig Tha'ab Ficus cordata (Moraceae) Red thorn Thbeean Acacia gerardii (Fabaceae) Khejri Ghaf Prosopis cineraria (Fabaceae) Dates Nakhleh Phoenix dactylifera (Arecaceae) Caralluma Qahr al-luhum Carallumaflava (Asclepidaceae) Name of the Major chemical Uses herb constituents Rose water Citronellal, geraniol, Astringent, cardiac methyl euginol, linalool, and cephalic tonic. vitamin C, kaempferol, and Used as eye drops. quercetin Garlic Aliin, allicin, diallyl Fever, pulmonary trisulfide, S-allyl infections, cysteine, ajoene S-allyl rheumatism, mercapto cysteine hypoglycemic, purgative. Thyme [alpha]-pinene, camphene, Carminative, [beta]-pinene, spasmolytic. [alpha]-terpinene, thymol Acridocarpus Flavonoids morin, Headaches and muscle polyphenols, phenolics pain. Cinnamon eugenol, eugenol acetate, Infection of the cinnamic aldehyde and respiratory tract, benzyl benzoate rheumatism, arthritis, general pains. Clove euginol, euginol acetate, Acne, bruises, burns iso-eugenol and and cuts, for caryophyllene toothache, mouth sores. Hemp Teaf: tetra hydro Retentive, cannabinol Oil: rich in anesthetic, proteins and vitamins astringent, sedative. True myrde myrtenyl acetate, 1, 8- Used in scorpion cineole, limonene, sting, burns, sores linalool, methyl eugenol, and ulcers. terpineole, trans- Antiseptic, carveole, geraniol antirheumatic. Senna leaves Sennocides A,B,C,D Taxative. Juniper [alpha]-pinene, camphene, Aromatic, stimulant, [beta] pinene, 1,4- digestive, diuretic. cineole limonene, camphor, linalool Frankincense Timonene, verbenone, Asthma, wounds, incensol ulcers, bronchitis, diuretic, tonic for cleansing the digestive system and for deodorizing the mouth. Mountain/felty Flavonoids Antibacterial, germander antinociceptive, or Cat thyme antinflammatory, bitter tonic febrifuge. Bitter apple Steroid alkaloid, Hemorrhoids, earache. solanin, solasonine St Joseph's wort, Thymol, euginol, 1,8 Colds and eye sweet basil cineole problems, insect bites. Jacobeastrum Volatile oil, Analgesic. arabicum secoeurabicanal Cumin Cuminaldehyde, cymene Enhancing appetite, boiling the ground seeds with lime and then drunk as a colic. Papaya fruits Papain enzyme, lycopene, Diarrhea. polyphenols Walnuts Nutrient-dense Eczema. Rhazya Alkaloids Smoke from its dried leaves is inhaled from a pipe for chest ailments. Miracle tree Flavonoids rutin, Seed oil is used for quercetin [beta]- bone setting. sitosterol, [beta]-amyrin Aloe plant Anthracene glycosides Purgative, eye infections, wound healing. Lycium Alkaloids, steroids, Detoxification, anti- flavonoids inflammatory, for sore eyes Bitter apple Flavonoids, unsaturated Dog and insect bites. fatty acids, alkaloids Spurge tree Flavonoids Bites, boils, burns. Rubber bush Cardiac glycosides Arthritis. Camel weed Thorn apple/ Steroidal glycosides, Hemorrhoids, eye and N ight shade steroidal alkaloids ear infections. Ginger Oleoresins Stomach ailments. Angels trumpet Tropane alkaloids Sedative, used to treat asthma. Namaqua fig Polyphenols, flavonoids Bites, boils, burns. Red thorn Polyphenols, catechins Bites, boils, burns. Khejri Polyphenols, catechins, Astringent, Flavonoids, 5HT demulcent. Dates Flavonoids, tannins, General tonic, vitamins, minerals, cooling, aphrodisiac, sterols bronchitis. Caralluma Pregnane glycosides, Tonic, stomach flavone glycosides ailments, suppress hunger. Name of the Reference Herbarium Extraction methods/ herb accession decoctions used number Rose water 10 DCHM/23 Aqueous water distillate. Garlic 11 DC/HM/24 Water distillation. Thyme 12 DC/HM/25 Extracted from the fresh or partly dried flowering tops and leaves of the plant by water distillation. Acridocarpus 13 DC/HM/26 Decoction made from crushed seeds. Cinnamon 14 DC/HM/27 The water distillate/ decoctions of the leaves and twigs or inner dried bark. Clove 15 DC/HM/28 Water distillate of clove buds. Hemp 16 DC/HM/29 The oil is expressed by applying pressure. True myrde 17 DC/HM/30 Myrtle oil is extracted from the leaves, branches, fruits and flowers through water distillation. Senna leaves 18 DC/HM/31 Teaf and root decoction. Juniper 19 DC/HM/32 Juniper oil is extracted from dried, crushed or slightly dried ripe fruit or leaves by water distillation. Frankincense 20 DC/HM/33 Oleoresin is collected from cut made in the bark of the tree. Mountain/felty 21,22 DC/HM/34 Water extract of the germander leaves and stem. or Cat thyme Bitter apple 23 DC/HM/35 Water extract of the roots. St Joseph's wort, 24 DC/HM/36 Teaf extract. sweet basil Jacobeastrum 25 DC/HM/37 Aqueous Leaf extract. arabicum Cumin 26 DC/HM/38 Decoction of the seeds. Papaya fruits 27 DC/HM/39 Leaves and seeds. Walnuts 28,29 DC/HM/40 Leaf juice. Rhazya 30 DC/HM/41 Dried leaf smoke, leaf juice. Miracle tree 31 DC/HM /42 Crushed seed oil. Aloe plant 32 DC/HM/43 Dried or fresh leaf juice. Lycium 33 DC/HM/44 Decoction of stem. Bitter apple 34,35 DC/HM/45 Decoction of the berries, whole plant. Spurge tree 36 DC/HM/46 Latex from the tree stem. Rubber bush 37 DC/HM/47 Plant milky sap extract. Camel weed Thorn apple/ 38 DC/HM/48 Leaves, whole plant. N ight shade Ginger 39 DC/HM/49 Rhizomes. Angels trumpet 40,41 DC/HM/50 Decoction of seeds. Namaqua fig 42 DC/HM/51 Tree sap. Red thorn 43 DC/HM/52 Plant resins. Khejri 44 DC/HM/53 Gum and resins. Dates 45,46 DC/HM/54 Fruits, leaves, seeds. Caralluma 47 DC/HM/55 Aerial part, whole plant.
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Author: | Divakar, Madhu. C.; Siyabi, Amani Al-; Varghese, Shirley. S.; Rubaie, Mohammed Al- |
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Publication: | Oman Medical Journal |
Article Type: | Report |
Geographic Code: | 7OMAN |
Date: | Jul 1, 2016 |
Words: | 4533 |
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