Yam extract 's pharmacological effects

1. Hypoglycemic effect of yam mucilage and polysaccharides can stimulate and regulate the human immune system, lower blood sugar, enhance human resistance. Research results show that yam has a certain anti-diabetic effect, may be related to increase insulin secretion, improve the function of damaged pancreatic beta cells.

2. anti-aging, antioxidant effect of research found that Huaiyang yam anti-free radical activity and the content of polyphenolic components in the extract has a certain correlation. The study also found that yam saponin has a strong ability to scavenge hydroxyl radicals: has a strong Fe3+ reducing ability, with the increase in concentration of reducing ability is also enhanced, but not as much as the same concentration of vitamin C reducing ability.

3. immunomodulatory effect of yam extract immunomodulatory effect is mainly related to polysaccharides.

4.Regulate the function of spleen and stomach yam has the effect of tonifying the middle and benefiting the qi, and has the effect of regulating the function of spleen and stomach. Shen Jingen et al. found that the anti-ulcer effect of fresh yam extract may be related by improving the quality of mucus layer and increasing the serum EGF content.

5.Anti-tumor and anti-mutagenic effects proved that the anti-mutagenic effects of yam active polysaccharides were mainly achieved by inhibiting the mutagenic effects of mutagens on strains.

6.Lipid-lowering effect of yam purified starch fed to atherosclerotic mice can reduce their lipid concentration, and to mice fed free cholesterol and cholesterol-containing food, yam can reduce their cholesterol concentration.

7. other effects in addition, research shows that yam also has the prevention of liver damage, antibacterial other effects.

Third, the efficacy and combination of yam extract

The main varieties of yam are Dioscorea opposita, Ginseng yam, Brown yam, Yam, Wild yam, Japanese yam, Japanese Yamato Nagayo, alias: Yam, Wai yam, Huai yam, Tu yam, Yam, Yu yan. Those who plant it are called home yam, wild white yam is called wild yam; Chinese herbs are called Huaiyama, Huaiyam, Huaiyam, etc.

Because of its rich nutrition, it has been regarded as a good and inexpensive tonic for the weak since ancient times, and can be used as a staple food and a vegetable, and can also be made into a snack such as sugar gourd.

It is also a good way to get the most out of your life. It belongs to the spleen, lung and kidney meridians.

Functions and Indications: Nourishes the spleen and stomach, generates fluid and benefits the lung, tonifies the kidney and astringent essence. Used for spleen deficiency, diarrhea, lung deficiency, asthma and cough, kidney deficiency, spermatorrhea, dysmenorrhea, urinary frequency, deficiency heat and thirst. Bran fried yam tonifies the spleen and strengthens the stomach. It is used for spleen deficiency, diarrhea, loose stools and excessive leucorrhea.

The two main types of yam cultivated in China are common yam and field yam. The tubers of common yam are small, among which the yam produced in the ancient Huaiqing Province (present-day Jiaozuo, Henan Province, including Mengzhou, Boai, Qingyang, Wuzhi, Wenxian and other counties) is particularly famous and valuable, and is customarily called "Huai yam", which is known as "Huai ginseng" and is the most famous in China.

Now there are three places in China that have applied for national geographical indication protection, one is "Iron Stick Yam" which is produced in Jiaozuo, Wen County and Mengzhou, Henan Province; one is "Chenji Yam" which is produced in Chenji Town, Heze City, Shandong Province, including "Chicken skin brown yam" and "Xishi seed yam".

The effect of yam is to strengthen the spleen and lung, benefit the stomach and kidneys, strengthen the kidneys and sperm, clear the ears and eyes, help the five organs, strengthen the muscles and bones, long will and tranquilize the mind, prolong life, used for weakness of the spleen and stomach, reduced diet, loose stools and diarrhea; women with spleen deficiency and hypochondria; lung deficiency and dry throat.

Spermatorrhea due to kidney deficiency. It is used for treating weakness of the spleen and stomach, tiredness and weakness, loss of appetite, prolonged dysentery, deficiency of lung qi and dryness, phlegm and cough, deficiency of kidney qi, soreness and weakness of the waist and knees, impotence of the lower limbs, thirst and frequent urination, whitish cloudiness in the belt, red and swollen skin, and obesity.

Weakness of the spleen and stomach, not thinking of eating. Use Dioscorea opposita and Atractylodes macrocephala, one tael each, ginseng seven and a half coins, grind them together and make a pill with water and paste, as big as a small bean. Take forty to fifty pills per dose in rice soup.

Damp-heat deficiency discharge. Use Dioscorea opposita and Atractylodes macrocephala, add rice to make pills and take in rice soup.

Swelling and poisoning at the beginning. Use Dioscorea opposita, castor seeds and glutinous rice, etc., soaked in water and applied finely to disperse.

Frostbite on hands and feet. Use a cut of Dioscorea opposita, grind the mud and put it on.

Yam for the treatment of weakness of the spleen and stomach, do not want to eat: 50 grams each of yam and atractylodes Ginseng 1.5 grams. The above three flavors pounded into a fine powder. Boil white flour paste into a pill as big as a small bean. 30 pills per dose, warm rice drink before eating in the empty heart. (Sheng Ji General Record, Yam Pill)

Yam to treat damp-heat diarrhea: Yam, Atractylodes, etc. Rice pill, rice drink. ("near lake experience formula")

Yam to treat silent dysentery: dried yam half fried yellow half raw with. Grind it into fine powder and mix it with water. ("Hundred One Selected Formula")

The yam is rich in 18 kinds of amino acids and more than 10 kinds of trace elements, and other minerals, so it has a spleen and stomach, lung and kidneys, the middle of the benefit of qi, the spleen and deficiency, the kidneys and essence, the heart and mind, etc., Li Shizhen "Compendium of Materia Medica" has "spleen, nourish the essence of the kidneys, cure all diseases, cure the five strains and seven injuries" said.

Thirst and thirst: the yam has the effect of thirst and thirst: Chinese medicine treatment of deficiency labor thirst (diabetes) prescription often yam single taste, or with other drugs, the effect is better.

Health care: Because fresh yam is rich in a variety of vitamins, amino acids and minerals, it can prevent abnormalities in human lipid metabolism, as well as atherosclerosis, and also has a role in maintaining the normal function of insulin, enhance human immunity, benefit the heart and tranquilize the mind, tranquilize the cough and asthma, delay aging and other health effects.

staherb18@staherb.cn

Nourish the face: Yuan Dynasty spleen and stomach expert Li Jing said: "cure dry skin to this material to moisten the. "Li Shizhen wrote:" yam can moisten the skin. "Yam has a unique therapeutic effect on nourishing the skin and improving beauty.

Regulation of the body's responsiveness to non-specific stimuli effect: it has an effect on immune function and improves the immunity of livestock and poultry.

Effect on small intestinal motility in mice: 20 mice of Kunming breed, divided into 2 groups, fasted for 24 h. The experimental group was treated with 10 ml of aqueous decoction of yam (containing 1 g/ml of raw herbs) + 0.5 g of activated charcoal (commercially available), and the control group was treated with 10 ml of saline + 0.5 g of activated charcoal, respectively ig.

After 20 minutes, the small intestine was immediately executed by spinal dislocation method, the small intestine was removed and laid flat, and the distance (cm) of the carbon powder pushed from the pyloric sphincter to the end of the small intestine was measured, and the percentage of this distance to the whole length of the small intestine was calculated. The results showed that yam has the effect of stimulating small intestinal motility and promoting the emptying of intestinal contents.

Others: The nutrients contained are related to mucilage and amylase, which have a tonic effect and can help digestion. Anti-diarrheal. Expectorant.

Compendium of Materia Medica: benefits kidney energy, strengthens the spleen and stomach, stops dysentery, resolves phlegm and saliva, moistens the skin and hair. Yam contains more nutrients, but also easy to digest and absorb, and is food, very suitable for long-term consumption.