Eleocharis dulcis, also known as water chestnut, peony, water chestnut, black taro, bodhisattva and pear, belongs to monocotyledonous Cyperaceae and is a perennial herb with oblate shape. Because it is shaped like a horseshoe, people also call it a horseshoe. It looks like chestnut, not only in shape, but also in taste, composition and function. Because it is produced in mud, it is also called "chestnut".

The specific shape is shown in the figure:

Nutritional value:

Water chestnut is rich in nutrition. According to the analysis, every 100 g fresh bulb contains 0. 8 ~1.5g protein, 12. 9~ 2 1.8 g carbohydrate, 0. 3 grams of fat and 0. 3 grams of crude fiber.

The phosphorus contained in water chestnut is high in root vegetables, which can promote the growth and development of human body and maintain the needs of physiological function, and is of great benefit to the development of teeth and bones. At the same time, it can promote the metabolism of sugar, fat and protein in the body and adjust the acid-base balance, so water chestnut is suitable for children.

In the study of water chestnut in Britain, a kind of water chestnut was found, which has certain inhibitory effect on Staphylococcus aureus, Escherichia coli, aerogenes and Pseudomonas aeruginosa, and also has certain effect on lowering blood pressure. This substance also has preventive and therapeutic effects on cancer. Eleocharis tuberosa has tender meat and sufficient body fluid, which can be used to treat fever, body fluid injury, thirst and other symptoms, and has a certain auxiliary treatment effect on diabetic polyuria. Lingjiao decoction can induce diuresis and relieve stranguria, which has a certain therapeutic effect on patients with urinary incontinence and can be used as a good diet for patients with urinary tract infection. It is found that water chestnut contains an antiviral substance, which can inhibit epidemic cerebrospinal meningitis and influenza virus and can be used to prevent the spread of epidemic cerebrospinal meningitis and influenza.