Yam has a long history of edible food. It is one of the earliest edible plants. In the Tang Dynasty Du Fu's "Qinzhou", there are yam mentioned in the verse. The verse is "filling the sweet potato, and the cliff honey is also easy to find." ". In the "Shen Nong's Herbal Classic", "Compendium of Materia Medica" has mentioned yam, so yam can not only be used as food, but also as a drug, with certain drug effects.
Yam is rich in nutrients, and there are many effects. Yam has the medicine in the mountains. The medicine in the food has certain medicinal value, and the yam is still guilty of Dihuang Pill, Liuwei Dihuang Pill, and Bawei Dihuang Pill. What are the specific effects and functions of yam?
The efficacy and role of yam
1. Promote digestion
Yam contains a saccharifying enzyme that promotes the decomposition of starch. It is also called glucoamylase, which promotes the decomposition of starch into low-molecular dextrin. Therefore, eating yam can promote the digestion of starchy foods.
2, raise lung and cough
Yam contains a substance called saponin, and saponin has the effect of relieving cough and phlegm, so eating yam has the effect of nourishing the lungs and relieving cough.
3. Prevention of cardiovascular diseases
The yam has a very low fat content, and the yam also contains saponin. The saponin naturally present in the plant is not only non-toxic to the human body, but also beneficial to the body, can lower the blood cholesterol content, prevent atherosclerosis, thereby preventing Cardiovascular diseases.
4, enhance immunity
Yam is rich in protein. When cutting yam, it will produce mucus. The mucus is formed by globulin and mannan in yam. Globulin has immune function, so it is often called immunoglobulin, so the edible yam has enhanced. The efficacy of immunity.
5, lowering blood fat and lowering cholesterol
As mentioned earlier, saponins contained in yam have the effect of lowering blood cholesterol, while yam also contains a nutrient called choline, which inhibits the deposition of fat in the liver and inhibits cholesterol in the blood vessel wall. Deposition, so eating yam has the effect of lowering blood fat and cholesterol.
6, promote brain development and improve memory
Yam contains a substance called choline, which has a promoting effect on the developing brain, so eating yam can promote brain development.
7, slimming
Yam has a low calorie content and is rich in dietary fiber. Dietary fiber can promote gastrointestinal motility, promote the discharge of waste in the intestines, promote bowel movements, and the potassium content in yam is also high. Potassium can promote excess body excretion. Moisture, so eating yam has the effect of slimming down.
The efficacy of yam is many, but people with diabetes should pay attention. Because the starch content in yam is relatively high, diabetic patients should eat less yam. If diabetic patients eat yam, they should reduce the starch intake in other foods.
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