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neemtree

Chemical constituents and properties
• From the seed is produced a bitter fixed oil, nimbidin, known as “Oil of Margosa” or neem oil.
• Neem seeds yield a fix oil of glycerides and bitter compounds including nimbin, nimbinin and nimbidol.
• Neem bark and leaves contain tannin and oil.
• Azadirachtin, the insecticide constitutent of the seeds, is biodegradable, non-mutagenic, and nontoxic to birds, fish, and warm-blooded animals. The EPA has approved a neem formulation (Margosan-O) as a pesticide for limited use on nonfood crops
• Antiinflammatory (nimbidin, sodium nimbidate, gallic acid, catechin, polysachharides).
• Antiarthritic, hypoglycemic, antipyretic, hypoglycemic, diuretic, anti-gastric ulcer (nimbidin)
• Antifungal (nimbidin, gedunin, cyclic trisulfide)
• Antibacterial (nimbidin, nimbolide, mahmoodin, margolone, margolonone, isomargolonone)
• Spermicidal (nimbin, nimbidin)
• Antimalarial (nimbolidfe, gedunin, azadirachtin)
• Antitumor (polysaccharides)
• Immunomodulatory (NB-II peptoglycan, gallic acid, epicatechin, catechin)
• Hepatoprotective (aequeous extract of neem leaf)
• Antioxidant (neem seed extract)

Parts used and preparation
Whole plant.
.
Uses
Folkloric
Poultice of leaves for swollen glands, brusies and sprains.
Fresh leaf-tea used for malaria.
Tree and root barks have been used for malaria, jaundice, and for intestinal parasitism.
Edible pulp of the fruit used for hemorrhoids.
Ayurvedic medicine
Leaf- leprosy, intestinal parasites, eye problems, skin ulcers
Bark – pain and fever.
Flower – bile suppression, intestinal worms and phlegm.
Fruit – piles, intestinal worms, urinary disorder, nose bleeding , phlegm, eye problem, diabetes, wounds and leprosy.
Twig – cough, asthma, piles, intestinal worms, spermatorrhoea, urinary disorders, diabetes.
Gum – ringworms,scabies, wounds and ulcers.
Seed pulp and oil- leprosy and intestinal worms.
Others
Young tender branches are chewed for toothbrushing use.
Leaf’s oil is used as a local antiseptic and insecticide.
Neem oil may be useful for gingivitis.
In the rural areas, burning of leaves and seeds used as mosquito repellant.
Neem oil has been shown to possess some spermicidal and contraceptive properties when used intravaginally.
Use of neem oil in animals showed lowering of glucose
Commercial use
Neem extracts used in the manufacture of toothpaste for its antibacterial properties.
Fresh seed oil has a strong garlic odor and is an ingredient for insect sprays.

Studies
• Studies have suggested hypoglycemic, antiulcer, antifertility, antimalarial, antifungal, antibacterial, antiviral, anticancer and antioxidant effects.
• Effect of essential oils from two Nigerian medicinal plants (Azadirachta indica and Morinda lucida) on growth and aflatoxin B1 production in maize grain by a toxigenic Aspergillus flavus: Oils from A indica completely suppressed aflatoxin synthesis.
Lipid Effects / Antiviral: Effect of Supplemental Garlic and Neem Leaves in Broiler Feeds on Blood Cholesterol, Triglycerids and Antibody Titer: Study showed neem had greater potential than garlic in reducing cholesterol, triglycerides and increasing the antibody titers against viruses.
Anti-ulcer: Mechanism of antiulcer effect of Neem (Azadirachta indica) leaf extract: effect on H+-K+-ATPase, oxidative damage and apoptosis: Study suggests antiulcer activity is achieved by blocking acid secretionn through inhibition of H+K+ATPase and preventing oxidative damage and apoptosis.
Anti-candidal: Anticandidal activity of Azadirachta indica: Study suggested hexane and alcoholic extracts to have anticandidal potential.

Source: http://www.stuartxchange.org/Neem.html

Related Sites:

http://www.discoverneem.com/neem-benefits.html
http://www.articlealley.com/article_766808_17.html
http://herbal-properties.suite101.com/article.cfm/research_supports_value_of_neem_herbal_extracts
http://www.healthypages.co.uk/newsitem.php?news=6070
http://www.americanchronicle.com/articles/view/42953
http://www.goherbalremedies.com/blog/herbal-remedies-by-neem-leaves-margosa/
http://www.neemfoundation.org/neem-articles/neem-in-health.html

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