Black beans:

Black bean is the black seed of soybean (scientific name: Glycinemax(L.)merr). The protein content of black beans is 36%, which is easy to digest, and it is of great significance to meet the needs of human body for protein. The fat content is 16%, mainly containing unsaturated fatty acids, and the absorption rate is as high as 95%, which not only meets the human body's demand for fat, but also has the function of lowering blood cholesterol;

Black beans are rich in vitamins, egg yolk, melanin, lecithin and other substances, among which B vitamins and vitamin E are high in content, which have nutritional and health-care functions. Black beans are also rich in trace elements, which are very important to maintain the functional integrity of the body, delay the aging of the body, reduce the blood viscosity and meet the needs of the brain for trace substances.

Chinese medicine believes that black beans are sweet, flat and non-toxic. Has the effects of relieving exterior syndrome, clearing away heat, nourishing blood, calming the liver, tonifying kidney, nourishing yin, and tonifying deficiency and black hair.

Soybean:

Soybean is commonly known as soybean. Soybean is rich in nutrition and content. The content of protein is twice that of pork and 2.5 times that of eggs. The content of protein is not only high, but also of good quality. The amino acid composition of soybean protein is similar to that of animal protein, in which the proportion of amino acids is close to the needs of human body and easy to digest and absorb.

If soybean is eaten with meat and eggs, its nutrition can be comparable to that of eggs and milk, even more than that of eggs and milk.

According to modern medical research, soybean contains no cholesterol, which can reduce human cholesterol, reduce the occurrence of arteriosclerosis and prevent heart disease. Soybean also contains a substance that inhibits pancreatic enzyme, which has certain curative effect on diabetes. Therefore, soybean is recommended by nutritionists as an ideal health care product to prevent and treat coronary heart disease, hypertension and atherosclerosis.

Soft phospholipids contained in soybeans are an important part of brain cells. Eating soybeans regularly plays an important role in increasing and improving brain skills. Chinese medicine believes that taking soybeans can make people grow skin, benefit color, replenish essence, strengthen strength, replenish deficiency and stimulate appetite. It is a nourishing food suitable for the weak, and has the functions of benefiting qi and nourishing blood. Has the effects of invigorating spleen, widening middle energizer, strengthening body, calming heart, benefiting large intestine, moistening dryness and promoting diuresis.

Characteristics of soybean:

Features:

Pods are fat, rectangular, slightly curved, drooping, yellow-green, 4-7.5 cm long, 8- 15 mm wide, densely covered with brown long hair; 2-5 seeds, oval, subglobose, ovoid to oblong, about 65438 0 cm long,

The width is about 5-8 mm, and the seed coat is smooth, with light green, yellow, brown and black. The hilum is obvious and oval, which varies with varieties. The flowering period is from June to July, and the fruiting period is from July to September.

The efficacy of soybean:

1. Soybean contains protein and is known as "vegetable meat". Eating soy protein supplements can avoid the problem of rising cholesterol in meat. Protein in soybean can increase the excitement and inhibition function of cerebral cortex, improve the efficiency of study and work, and help to relieve depression.

2. Soybean is rich in soybean lecithin, which is one of the important components of the brain. Eating more soybeans can help prevent Alzheimer's disease. In addition, sterols in soybean lecithin can increase nerve function and vitality. Soybean lecithin can also promote the absorption of fat-soluble vitamins and strengthen various tissues and organs of human body. In addition, it can reduce cholesterol, improve lipid metabolism and prevent coronary atherosclerosis.

3. Soybean is rich in soybean isoflavones, which can improve skin aging and relieve menopausal syndrome. In addition, Japanese researchers found that linoleic acid contained in soybeans can effectively prevent the synthesis of melanin in skin cells. Soybeans contain protease inhibitors. Researchers at new york University in the United States have found that it can inhibit a variety of cancers, especially breast cancer.

4. Phytosterols in beans can lower blood cholesterol. It can compete with the cholesterol in the intestine and reduce the absorption of cholesterol. It can reduce the "bad cholesterol" in the blood of patients with hyperlipidemia without affecting the "good cholesterol" in the blood, and has a good lipid-lowering effect.

American scientists have found that patients with hypertension consume too much sodium and too little potassium in their diet. Intake of high-potassium food can promote the discharge of excessive sodium salt in the body, which has the effect of assisting blood pressure reduction. Soybean is rich in potassium, and the potassium content per100g of soybean is as high as1503mg. Patients with hypertension often eat soybeans, which is very helpful to supplement potassium in the body in time.

For food, if you make soybean milk, you can mix two kinds of soybeans into soybean milk, which is more nutritious and comprehensive.

Extended data:

Who shouldn't eat soybeans:

1, patients with acute gastritis and chronic superficial gastritis should not eat soy products, so as not to stimulate excessive gastric acid secretion to aggravate the condition or cause flatulence.

2, beans contain a certain amount of oligosaccharides, which will cause belching, bowel sounds, bloating and other symptoms, so friends with gastric ulcers had better eat less.

3. Patients with gastritis and renal failure need a low-protein diet, while beans and their products are rich in protein, and their metabolites will increase the burden on the kidneys, so they should be fasted.

4. Oxalate in beans can combine with calcium in kidney, which is easy to form stones, which will aggravate the symptoms of kidney calculi, so kidney calculi patients should not eat it.

5. Gout is a disease caused by purine metabolic disorder. Soybean is rich in purine, which is a hydrophilic substance. Therefore, after soybean is ground into pulp, the purine content is several times higher than that of other bean products. So soybean milk is not suitable for gout patients.

6. People with cold soybeans and stomach and those who are prone to diarrhea, bloating, spleen deficiency and kidney deficiency and frequent nocturnal emission should not eat more.

Don't eat it raw, it's poisonous. Eating incompletely cooked soybean milk may cause different degrees of food poisoning symptoms, including abdominal distension, diarrhea, vomiting, fever and so on.

References:

Soybean-Baidu Encyclopedia

Black beans-Baidu encyclopedia