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Parts utilized
Tops, leaves and edible roots.
Constituents and properties
• Source of polyphenolic antioxidants.
• Leaves have a high content of polyphenolics – anthocyanins and phenolic acids, with at least 15 biologically active anthocyanins with medicinal value.
• Polyphenols have physiologic funtions, radical scavenging activity, antimutagenic, anticancer, antidiabetes and antibacterial activity in vitro and vivo.
• Considered hemostatic, spleen invigorating.
Uses
Nutritional
Edible: Leaves and roots.
Has a higher nutritional value than the common potato.
Good source of vitamins A, B and C, iron, calcium and phosphorus.
High in complex carbohydrates and dietary fiber; deficient in protein.
Leafy tops eaten as vegetables.
A component of many traditional cuisines.
A staple food crop in some countries.
Industrial
Starch and industrial alcohol production.
Folkloric
Tops, especially purplish ones, used for diabetes.
Crushed leaves applied to boils and acne.
For diarrhea: Boiled or boiled roots.
Studies
• Dengue – Like gatas-gatas (Euphorbia hirta), there have been anecdotal reports of the use of Ipomoea batatas in dengue, with improvement in platelet counts being attributed to decoctions of kamote tops.
Preparation: kamote tops are boiled in wate for 5 minutesr to extract the juice
• Diabetes – Despite its “sweet” name, it may be beneficial for diabetes as some studies suggest it may stabilize blood sugars and lower insulin resistance.
• Purple Sweet Potato anthocyanins have antioxidative activity in vivo as well as in vitro.
• Hemostatic mistura of ipomoea balatas leaves, methods of preparation and use thereof — a Jinshuye styptic plant preparation, an invention made from the extracts of leaf and stems of Ipomoea batatas has qi and spleen invigorating effects, cooling the blood and stopping bleeding. Such a composition has the potential of use for ITP (idiopathic thrombocytopenic purpura), radiotherapy- and chemotherapy-induced thrombocytopenia.
• Local Root Crops as Antioxidant: A 2006 study of commonly consumed roots crops in the Philippines (Kamote, Ipomoea batata; ubi, purple yam, Dioscorea alata; cassava, Manihot esculenta; taro or gabi, Colocasia esculenta; carrot, Daucus carota; yacon (Smallanthus sonchifolius) showed them to be rich sources of phenolic compounds with antioxidant acitivity, highest in sweet potato, followed by taro, potato, purple yam and lowest in the carrot.
• BIOACTIVE COMPOUNDS IN IPOMOEA BATATAS LEAVES: Results suggest the total phenolic content was positively correlated with radical scavenging activities of the sweet potato leaves.
• Antidiabetic activity of white skinned sweet potato (Ipomoea batatas L.) in obese Zucker fatty rats: Results suggest the white skinned sweet potato has antidiabetic activity and and improves glucose and lipid metabolism by reducing insulin resistance.
• Sweet potato (Ipomoea batatas [L.] Lam ‘Tainong 57’) storage root mucilage with antioxidant activities in vitro: Mucilage might contribute its antioxidant activities against both hydoxyl and peroxyl radicals.
• Flavonoids: Leaf extract study isolated five news compounds: tiliroside, astragalin, rhamnocitrin, rhamnetin and kaempferol.
• Chitinases: Study identified new chitinolytic enzymes in sweet potato leaves. Chitinases catalyze the hydrolysis of chitin, the main structural component of fungal walls and arthropod integuments. Studies suggest it has other functions and has been proposed to play a role in the defense against pathogens. Chitinases are also useful in the production of biomedical and biotech products; used in the production of chitooligosaccharides, glucosamines and GlcNAc. Other applications are found in mosquito control and pathogenic plant fungi control.
• Antioxidant / Antiproliferative: Study demonstrated that the phytochemicals in sweet potato may have significant antioxidant and anticancer activities. The antioxidant activity was directly related to the total amount of phenolics and flavonoids in the extracts. The additive roles of phytochemicals may contribute to its ability in inhibiting tumor cell proliferation in vitro.
Source: http://www.stuartxchange.org/Kamote.html
Health Benefits
Sweet potatoes are excellent sources of plant proteins with very low calories. Unlike other starchy root vegetables, it is very low in sugar, and in fact is a good blood sugar regulator.
As an anti-oxidant: Sweet potatoes have been found to contain a high amount of anti-oxidant, making it suitable in combating inflammatory problems like asthma, arthritis, gout, etc.
Diabetes: This fibrous root is suitable for diabetics’ consumption as it is a very good blood sugar regulator, helps to stabilize and lower insulin resistance.
Digestive tract, healthy: The significant amount of dietary fiber, especially when eaten with the skin, helps to promote a healthy digestive tract, relieving constipation and also helps prevent colon cancer.
Emphysema: Smokers and people who inhale second-hand smoke should regularly consume foods high in vitamin A as smoke has been found to induce vitamin A deficiency, causing a host of other health problems to the lungs.
Fetal Development: The high folate content is important and necessary for healthy fetal cell and tissue development.
Immune System: Regular consumption of sweet potatoes strengthens the body’s immune system and develop resistance to infection.
Heart diseases: Consumption of this high potassium root helps to prevent heart attack and stroke. It helps maintain fluid and electrolyte balance in the body cells, as well as normal heart function and blood pressure.
Muscle Cramps: A deficiency in potassium can cause muscular cramps and greater susceptibility to injury. Make sweet potatoes a regular part of your diet if you exercise a lot, both for an energy boost and to prevent cramps and injuries.
Stress: When we are stressed, our metabolic rate rises, causing the body potassium levels to be reduced. By snacking on the potassium-packed sweet potato, it helps to rebalance the vital mineral, and helps normalize the heartbeat. This in turn sends oxygen to the brain and regulates the body’s water balance.
http://www.juicing-for-health.com/sweet-potato-health-benefits.html
Sweet Potato Ranks Number One In Nutrition
According to nutritionists at the Center for Science in the Public Interest (CSPI), the single most important dietary change for most people, including children, would be to replace fatty foods with foods rich in complex carbohydrates, such as sweet potatoes.
CSPI ranked the sweet potato number one in nutrition of all vegetables. With a score of 184, the sweet potato outscored the next highest vegetable by more than 100 points. Points were given for content of dietary fiber, naturally occurring sugars and complex carbohydrates, protein, vitamins A and C, iron and calcium. Points were deducted for fat content (especially saturated fat), sodium, cholesterol, added refined sugars and caffeine. The higher the score, the more nutritious the food.
http://www.foodreference.com/html/sweet-pot-nutrition.html
See also:
http://www.elements4health.com/sweet-potatoes.html
http://hubpages.com/hub/Health_Benefits_of_Sweet_Potato
http://www.whfoods.com/genpage.php?tname=foodspice&dbid=64
http://food-facts.suite101.com/article.cfm/nutritional_benefits_of_sweet_potatoes
http://www.ehow.com/facts_4797224_health-benefits-sweet-potatoes.html
Chemical constituents and properties
• The dried leaves contain 0.21–1% essential oil, the major compounds of which are linalool and methyclaviol.
• Some of the other compounds are: caffeic acid, p-coumaric acid, p-cymene, limonene, 1,8-cineole, methyl cinnamate, myrcene, quercetin, rutin, tryptophan, safrole.
• Study yielded 14 different anthocyanins: 11 cyanidin-based pigments and 3 peonidin-based pigments.
• Carminative, stimulant, diaphoretic, expectorant, febrifuge, diuretic, demulcent, mucilaginous, cooling.
Parts utilized
Leaves, seeds.
Mature fresh leaves are harvested 2 to 3 months after planting. Leaves are picked leaving the branches on the plant to allow it to flower and produce seeds for the next season.
The leaves are air-dried until they crumble when crushed with the fingers. Store in amber colored bottles in a cool, dry place.
Uses
Culinary
The leafy and flowering tops are used as condiment; eaten sparingly in salads.
Folkloric
Cough: Expectorant properties – Take infusion or decoction of herb (9-15 gm of dried herb) or tops as tea.
Leaf juice helpful for expectoration of mucus.
Decoction of leaves also used for hiccups, vomiting and nausea.
Gas pains: Decoction of herb as tea helps to expel wind from bowels.
Snake bites: Crush fresh plant and poultice the bitten wound.
Gonorrhea, using a decoction of the roots and leaves of plants.
Decoction of leaves used as a wash for ulcers.
External contusions.
Used in baths for rheumatic pains.
Ringworm and insect bites: Apply juice of crushed leaves.
Skin ulcers: Decoction of herb as wash.
For delayed menstruation: take the juice of the leaves with water.
Seeds are used in treatment of several eye diseases.
Toothache: Wet small piece of cotton with juice of crushed leaves and insert into tooth cavity.
Postpartum: Decoction of seeds used to decrease postpartum pains; the seeds are mucilaginous.
Poultice of seeds used for buccal sores.
Decoction of seeds also used for constipation.
Acne: Infusion of 3 tsp of dried leaves in 1 cup of boiling water for 20-30 minutes. Apply externally or drink decoction of tea or infusion 3 times daily.
Others
• Oils repel insects (limonene, myrcene, camphor, thymol) and have larvicidal (eugenol and methylclaviol) activity against houseflies and mosquitoes.
Recent uses
Dizziness: crush enough fresh leaves with your fingers and sniff them.
Cough: As decoction boil eight tablespoons of fresh leaves in two glasses of water for 15 minutes or until the liquid is reduced to half. Divide the decoction into eight parts and take one part, three times a day.
Studies
• Aqueous extracts of Ocimum basilicum L. (sweet basil) decrease platelet aggregation induced by ADP and thrombin in vitro and rats arterio–venous shunt thrombosis in vivo: Results showed Ocimum basilicum to possess an inhibitory effect on platelet aggregation induced by ADP and thrombin resulting in an anti-thrombotic effect in vivo.
• Cardiac stimulant activity of Ocimum basilicum Linn. extracts: The study evaluated the cardiac effects of extracts derived from the aerial parts of Ocimum basilicum. Results showed the alcoholic extracts exhibited a cardiotonic effect and the aqueous extract produced a B-adrenergic effect.
• Antimicrobial Effects of Ocimum basilicum (Labiatae) Extract: Results suggest that O. basilicum extracts possess compounds with antimicrobial properties against C. albicans and some bacterial pathogens.
• Anti-dyspepsia: A Double-Blind Placebo-Controlled study showed Ocimum basilicum seems to relieve functional dyspepsia in female and young patients with dysmotility.
• Anthocyanins in Basil : Purple basils are an abundant source of acylated and glycosylated anthocyanins, a potential source of stable red pigments to the food industry.
• Antioxidant: In a study of plants in the Lamiaceae family, the leaves and stems of Ocimum basilicum displayed the highest antioxidant activity.
• Antiulcer: Study showed the seed extracts of OB to possess significant anti-ulcer activity against ethanol-induced ulceration in animal models.
• Wound-Healing Activity: Wounds treated with honey in combination with OB alcoholic leaf extract and solcoseryl-jelly showed accelerated wound healing compared to honey alone.
• Antiproliferative / Anticancer: A study on the antiproliferative activity of essential oil from 17 thai medicinal plants on human mouth epidermal carcioma (KB) and murine leukemia (P388) cell lines. In the KB cell line, Sweet Basil (Ocimum basilicum) oil showed the highest anti-proliferative activity in the P388 cell line. The results suggested the potential of Thai medicinal plants for cancer treatment.
Toxicity
Although known for its medicinal benefits, it contains some potentially dangerous compounds: safrole, rutin, caffeic acid, tryptophan and quercetin.(See: Medicinal Plants for Livestock / Cornell University)