Dioscorine is an alkaloid toxin isolated from the tubers of tropical yam on several continents.
Dioscorine.
| Names | |
|---|---|
| CAS Number | 3329-91-7 |
| 3D model (JSmol) | Interactive image |
| ChEBI | CHEBI:4628 |
| ChemSpider | 10194088 |
How toxic are yams?
This tuber crop can however be toxic if consumed in the unprocessed state. Patients with bitter yam toxicity can pre- sent with neurologic manifesta- tions such as convulsions and coma; digestive system problems such as vomiting; or allergic reac- tions such as itching.
Are yam leaves toxic?
Some Dioscorea species produce edible leaves, but these leaves are localized to specific regions of the world, mainly in India, Africa, and some parts of Asia. Many Dioscorea species can also be toxic, so care and research should be taken before foraging leaves from wild plants.
What is the alkaloid present in wild yams?
The active constituents of wild yam include the steroidal saponins dioscin and gracilin and soquinuclidine alkaloids such as dioscorine and tannins.
Is Chinese yam poisonous?
While the tuber and bulbs of Chinese yam are edible, generally only the tuber is consumed as food.
Who should not take yam?
Children, women who are pregnant or breastfeeding, and people with protein S deficiency — a genetic disorder that increases your risk of blood clots — are also encouraged to steer clear of wild yam root because of insufficient safety information (22, 23 ).
Does yam contain cyanide?
The cyanide content of the fresh tubers of wild yam ranged from 0.02 to 0.33 mg/kg dry matter (DM) (Table 1). Precooking the tubers in their skins, as is generally done in areas where some of these yams are consumed, reduces the cyanide content by about 50%.
Which part of potato plant is toxic?
Potato plant poisoning occurs when someone eats the green tubers or new sprouts of the potato plant.
Is raw sweet potato poisonous?
Turns out a lot of people think you have to cook sweet potatoes before you eat them. But unlike regular potatoes, which contain the dangerous enzyme solanine in their raw state, sweet potatoes can actually be consumed raw.
What vegetable leaf is poisonous?
Rhubarb leaves are very high in oxalic acid, which quickly causes kidney failure in humans. About 25 grams of pure oxalic acid is the average amount needed to kill a human.
What is the difference between wild yam and yam?
True yams are actually a completely different category of vegetable and have no relation to potatoes or sweet potatoes. Let’s learn more about what actual yams are. When you see the term “Chinese yam” or “wild yam,” these are actually referring to this different type of yam which is in the Dioscoreae family.
Does wild yam increase estrogen or progesterone?
In fact, several studies have found that wild yam does not reduce the symptoms of menopause, such as hot flashes, or raise levels of estrogen or progesterone in the body.
What does wild yam do for the body?
Potential medicinal uses for wild yam include the treatment of menopause symptoms, rheumatoid arthritis, diabetes, and muscular cramps. There are various other names for wild yam, such as colic root, devil’s bones, rheumatism root, or China root. While there are over 600 species of wild yam, only 12 are edible.
Are yams toxic raw?
Unlike sweet potatoes, yams are toxic if they’re eaten raw, but they’re perfectly safe when cooked.
Is purple yam toxic?
It is perennial, fast growing, and climbing plant that grows up to 15 m long. The tubers are cooked ? used in variety of desserts and as flavouring. It can be toxic if eaten raw.
Is taro and yam the same?
Taro is grown from the tropical taro plant and is not one of the nearly 600 types of yams. Summary Taro root grows from the taro plant, and unlike purple yams, they are not a species of yam.
Is yam high in estrogen?
Eating sweet potatoes or yams will provide nutrients, but, as they contain neither progesterone nor estrogen, they won’t affect a woman’s hormonal balance.
Which is healthier potato or yam?
Yams have a lower GI than white potatoes, but both fall in the low category. An average-sized boiled white potato has a GI of 50, while an average-sized yam ranks at 37. Different preparations will affect the glycemic index. Mashed potatoes, for example, have a considerably higher GI than boiled.
Does yam affect blood pressure?
Being a good source of potassium(a mineral that helps to control blood pressure), eating yams can help make up for the low amount of fruits and vegetables we consume. Dioscorin, a storage protein contained in yam, may also be of benefit to certain individuals with hypertension.
Are yams toxic to humans?
While sweet potatoes can safely be eaten raw, certain types of yams are only safe to eat when cooked. Naturally occurring plant proteins found in yams can be toxic and cause illness if consumed raw. Peeling and cooking yams thoroughly will remove any harmful substances ( 17 ).
Which vegetable has cyanide?
Cyanide is released from natural substances in some foods and in certain plants such as cassava, lima beans and almonds.