1, the appearance of the difference

Green heart black beans: green heart black beans are divided into two kinds of large black beans and small black beans, the general shape of the beans are round, and not very uniform.

Yellow hearted black beans: yellow hearted black beans only small grain varieties, the shape of the flat, slightly oval.

2, the specific role of the difference

Black beans are divided into two kinds of medicinal and edible, medicinal black beans are yellow heart, edible black beans are green heart.

Yellow heart is our ancestors planted a long time ago, called the male small beans, mainly used in medicine.

The green heart is the introduction of new varieties, mainly used for food.

3, nourishing effect difference

green heart black beans: green heart black beans are improved varieties, its nourishing effect is slightly weaker.

Yellow hearted black beans: yellow hearted black beans are old varieties, before the medicinal black beans are yellow hearted small black beans, the role of its nourishment is stronger, especially the role of the spleen and the kidneys is stronger.

The five effects of black beans:

1, high protein and low calorie: the protein content of black beans is as high as 36% -40%, equivalent to the meat content of two times, three times the egg, 12 times the milk. Black beans are rich in amino acid content, especially the human body must be 8 kinds of amino acid content.

Black beans contain 19% fat, of which *** high limit fatty acids 80%, the absorption rate of up to 95% or more, in addition to meet the human body's need for fat, there is to reduce blood cholesterol.

Cholesterol is the bane of many diseases of the elderly, and black beans do not contain cholesterol, only contains a plant sterols, with the body to inhibit the absorption of cholesterol, with the role of lowering the level of cholesterol in the blood.

2, enhance vitality: beans are kidney grain, black is water, water goes to the kidney, so black beans into the kidney function more. The aging of people often start from the kidney function, to get rid of disease, anti-aging, enhance vitality, must pay attention to the kidney.

3, to prevent brain aging: black beans contain about two percent of methionine, can be brain-boosting, to prevent the brain from aging and sluggish. Japanese scientists have found that there is a black bean can improve the strengthening of brain cell function of things.

Black beans are rich in trace elements, each one hundred grams of black beans, containing calcium three hundred and seventy milligrams, phosphorus five hundred and seventy-seven milligrams, twelve milligrams of iron, and others such as zinc, copper, magnesium, molybdenum, selenium, fluorine and other content are not low. These elements can meet the needs of the brain and slow down the aging of the brain organism. It can reduce blood viscosity and maintain the integrity of body functions.

4, beautiful appearance: many important ancient pharmacopoeias have recorded black beans can face, eyesight, hair, so that the skin texture becomes white and tender; Song Dynasty writer Su Dongpo, once described the capital city of Bianliang inside and outside the court, the young girls in order to make the appearance of beautiful and eat black beans.

Black beans are rich in vitamins, especially vitamin E and B vitamins content is very high, of which the content of vitamin E is 5 to 7 times higher than meat.

5, to prevent constipation: black beans in the crude fiber content of 4%, more than soybeans a lot. Crude fiber has a good laxative effect, constipation is a common problem in the elderly, modern people's diet is too much to pay attention to fine, so that the intake of crude fiber is too little, aggravating the intestinal tract, easy to constipation, leading to hemorrhoids and intestinal cancer.

Reference:

Baidu Encyclopedia - Black Beans