Linn.
Family: Gramineae; Poaceae.
Habitat: A cereal and fodder crop of Europe and America; also cultivated in India.
English: Oat, Common oat.
Ayurvedic: Yavikaa. (Indian sp. is equated with A. byzantina C. Koch.)
Unani: Sult (Silt), Jao Birahnaa, Jao Gandum.
Action: Nervine tonic (used in spermatorrhoea, palpitation, sleeplessness), cardiac tonic (used in debility), stimulant, antispasmodic, thymoleptic, antidepressant (used in menopausal phase). Also used in diarrhoea, dysentery, colitis. Externally, emollient.
Key application: Oat straw— externally in baths for inflammatory and seborrhoeic skin diseases. (German Commission E.) The effect on blood sugar is less than that from most of the fiber-containing herbs and foods. (Sharon M. Herr.)The seeds contain proteins and prolamines (avenins); C-glycosyl flavones; avenacosides (spirostanol glycosides); fixed oil, vitamin E, starch.Silicon dioxide (2%) occurs in the leaves and in the straw in soluble form as esters of silicic acid with polyphenols and monosaccharides and oligosaccharides.Oat straw contains a high content of iron (39 mg/kg dry weight), manganese (8.5 mg) and zinc (19.2 mg).In an experimental study, oat straw stimulated the release of luteinizing hormone from the adenohypophysis of rats. (Expanded Commission E Monographs.)An alcoholic extract of green oats was tried on opium addicts. Six chronic opium addicts gave up opium completely, two reduced their intake and two showed no change following regular use of 2 ml three times daily (human clinical study). A significant diminish- ment of the number of cigarettes used by habitual tobacco smokers resulted from using 1 ml (four times daily) of fresh Avena alcoholic extract of mature plants; however, a few studies gave disappointing results. (Francis Brinker.)Oat polyphenol composition prevented the increase of cholesterol and beta-lipoprotein of blood serum of fasting rabbits. Antioxidant property of the oat flour remains unaffected by heat. Homoeopathic tincture of seeds is used as a nervine tonic. Beta-glucan from the oats stimulated immune functions.Avenacosides exhibit strong anti- fungal activity in vitro.
Oats, oatmeal, oatstraw (Avena sativa).Plant Part Used: Seeds (oat grain), fruiting tops.Dominican Medicinal Uses: Oats are traditionally boiled in water to make oatmeal or an oatmeal-like beverage and taken orally for high cholesterol, to stimulate lactation, for nutrition and strength and to relieve menopausal hot flashes.Safety: Oats are commonly consumed and generally regarded as safe. They have shown low potential for allergic reaction in gluten-sensitive individuals.Contraindications: In patients with celiac disease, oats may cause gastrointestinal irritation, but they have been shown to be well-tolerated in recent clinical studies.Drug Interactions: Lovastatin and statin drugs (impaired absorption of HMG-CoA reductase inhibitors).Clinical Data: The following effects of oats or oat extracts have been investigated in human clinical trials: anti-diabetic, cholesterol-lowering, hypoglycemic, hypocholesterolemic, smoking cessation (grain extract or oat bran); antihyperlipidemic, antihypertensive, reduced heart disease risk, stimulation of bile acid secretion and synthesis, tolerance in celiac patients (whole-grain and oat bran); anti-skin irritant, burn wound-healing, itch reduction (topical oil-based preparation).* See entry for Avena in “Part 3: Dominican Medicinal Plant Profiles” of this book for more information, including references.... avena
Linn.
Family: Papilionaceae; Fabaceae.
Habitat: Punjab, Uttar Pradesh, Gujarat, Maharashtra, Tamil Nadu, West Bengal, as a farm crop.
English: Alfalfa, Lucerne.
Ayurvedic: Alfalfa, Vilaayati- gawuth, Lasunghaas, Lusan.
Unani: Barsem.
Action: Anticholesterolemic, rich in essential enzymes, minerals and vitamins; a preventive of high blood pressure, diabetes, peptic ulcer.
Alfalfa tea is used to strengthen the digestive system. Sprouts (of seeds) are used by diabetics.The herb contains carotinoids (including lutein), triterpene saponins, isoflavonoids coumarins, triterpenes (including sitgmasterol, spinasterol); also cyanogenic glycosides (corresponding to less than 80 mg HCN/ 100 g); pro-vitamins A, B6, B12, D, K, E and P; calcium, phosphorus, iron, potassium, magnesium, choline, sodium, silicon and essential enzymes.The seeds contain 33.2% protein and 4.4% mineral matter; saponins with the aglycones, soyasapogenol B and E and polymines, diaminopropane and norspermine. Two storage globulins, alfin and medicagin are found in the seeds.The flowers contain flavonoids, kaempferol, quercetin, myricetin and laricytrin. The fruits contain beta- amyrin, alpha- and beta-spinasterol, beta-sitosterol, stigmasterol, myrselli- nol, scopoletin and esculetin.The saponin, medicagenic acid, is found in leaves and roots (leaves 1.49%, roots 2.43% of dry matter).Alfalfa seed extracts prevented hy- percholesterolemia, triglyceridaemia and atherogenesis in cholesterol-fed rabbits and cynomologus monkeys. The saponins in the extract reduce intestinal absorption of cholesterol in rabbits.Human trials have indicated the use of the herb in menopause. (Sharon M. Herr.)... medicago sativa