Why fiber is called the seventh nutrient .

In the daily diet, it is necessary to eat more high-fiber foods. This is of course because it has the effect of preventing and treating a variety of diseases, but also because with the improvement of living standards, people's dietary structure has been transformed in the direction of refinement and refinement, so that the fiber content in food is getting less and less, which affects the normal physiological function of the intestines. So, which foods are rich in fiber?

Cereals, especially wheat bran and rice bran, contain a lot of cellulose, and coarse grains are more than fine grains. Therefore, the staple food is not as fine and fine as possible, and coarse grains and fine grains should be matched, and some coarse grains should be added appropriately. Vegetables such as celery, leeks, cabbage, and radishes, as well as some fruits and fresh legumes, also contain a lot of fiber.

Therefore, it is beneficial to increase the vegetarian diet and eat more fresh vegetables. It is important to know that even the same plant contains different amounts of fiber in different parts.

There are six major nutrients in the human body. Sugars, proteins, fats, inorganic salts, water, vitamins. These are inherent in humans, while fiber can only be ingested through food, but it is necessary for humans.

From the chemical composition of cellulose, it is a polysaccharide.

Cellulose is a macromolecular polysaccharide composed of glucose. Insoluble in water and general organic solvents. It is the main component of the plant cell wall.

Cellulose is the most widely distributed and abundant polysaccharide in nature, accounting for more than 50% of the carbon content of the plant kingdom. Cotton has a cellulose content of nearly 100%, which is the purest cellulose in nature**. In general wood, cellulose accounts for 40 50%, as well as 10 30% hemicellulose and 20 30% lignin.

Because the fiber of food is very nutritious, it is very helpful to the body, and it will also be easy to digest, and it will also enhance the body's resistance, so it will be the 7th nutrient in the body.

Because dietary fiber exists in a large number of foods, and can play a very good role, although dietary fiber is not nutritious, but it can promote intestinal peristalsis, help the human body to discharge toxins, help the human body improve metabolism, is an element that the human body can not do without.

Because it still has a lot of effects on the human body, but it is not easy to digest and absorb, so it is ranked relatively low.

Because the fiber content in food is also very high, it also plays a very important role in the body, and it can also prevent many diseases.

Dietary fiber refers to the plant material that food is not digested in the human intestines. It includes cellulose, hemicellulose, pectin, algin, xyterin, and other polysaccharide substances that were previously thought to be unusable by the body. Modern scientific research has confirmed that dietary fiber is not just a food residue as people traditionally believe, but an indispensable nutrient for human beings to cure diseases and increase life, which is called the seventh nutrient.

Although humans cannot digest dietary fiber like herbivores, they can break down some of the fiber with gut bacteria. For example, E. coli can synthesize fiber into vitamin B pantothenic acid, Huisen inositol and vitamin K and absorb them by the body.

Dietary fiber has the effect of making feces swell, absorbing pure water, promoting intestinal function, accelerating the propulsion of feces in the intestines, making defecation timely, reducing the contact time between the intestinal lumen wall and ingested carcinogens, and reducing the risk of intestinal cancer. The fiber intake of Europeans and Americans is only 1 6 of Africans, and 42 out of 100,000 people in the United States have colorectal cancer, while only 8 people in Africa have colorectal cancer. Dietary fiber can also reduce the prevalence of gastric cancer and lung cancer, and has a preventive and advanced effect on constipation, hemorrhoids, diabetes, etc.

In addition, dietary fiber has a good effect on preventing coronary heart disease and gallstones.

Too much dietary fiber may affect the absorption of calcium, iron, and some vitamins. However, if it is mastered in moderation, there are more advantages and fewer disadvantages. As long as we have a reasonable mix of coarse and fine grains and eat more vegetables and fruits, dietary fiber will make a miracle for your health and longevity.

I think it's because fiber is the digestion of food.

Dietary fiber is a food nutrient that is generally not easily digested, mainly from the cell wall of plants, including cellulose, hemicellulose, resin, pectin and lignin. Dietary fiber is essential for a healthy diet, it plays an important role in maintaining digestive health, and adequate fiber intake can also prevent cardiovascular disease, cancer, diabetes and other diseases. Fiber cleanses the digestive wall and enhances digestive function, while fiber dilutes and accelerates the removal of carcinogens and toxins from food, protecting the delicate digestive tract and preventing colon cancer.

Fiber slows digestion and excretes cholesterol the fastest, so blood sugar and cholesterol levels are kept at optimal levels.

Fiber is an important dietary fiber. Dietary fiber can promote peristalsis and emptying of the gastrointestinal tract. It is conducive to maintaining cardiovascular and cerebrovascular health, preventing diabetes, and maintaining normal weight. Some scientists refer to him as the body's "seventh group of nutrients."

Vitamin is a polysaccharide.

The reason why cellulose is listed as one of the 7 major nutrients is because it is different from general polysaccharides, which cannot be digested and utilized, but it has special effects

1. Promote gastrointestinal peristalsis and facilitate the digestion of other foods;

2. The role of preventing constipation, hemorrhoids, colon cancer and other diseases.

Therefore, fruit and vegetable cellulose is also known as "dietary fiber".

Cellulose is a polysaccharide, and one of the 7 major nutrients is correct.

Because it can not be synthesized in the human body, human beings can only obtain it through food, if it is missing, it will get a series of dietary fiber deficiency syndromes, such as constipation, hemorrhoids, intestinal cancer and other intestinal diseases, it plays an important role in maintaining human intestinal health, in the nineteenth century, people thought that dietary fiber was excreted by people as garbage, dispensable, so it has been excluded from the six major nutrients, but, with the rise of nutrition, nutritionists have found that there are now many sub-health diseases, Rich diseases are caused by the lack of dietary fiber, such as, diabetes, three highs, constipation and other diseases that were rarely there before, now with the improvement of living standards are becoming more and more common, through years of research, scientists have found that originally, with the improvement of living standards, the diet of modern people has undergone earth-shaking changes, the proportion of dietary fiber in our diet is getting less and less, is dietary fiber useful to the human body? This caught the attention of scientists, and finally, it was discovered that, yes, dietary fiber is essential for humans! After nearly ten years of research, scientists have found that dietary fiber plays an important role in maintaining intestinal health, it can eliminate intestinal garbage in the body, remove intestinal toxins, inhibit the growth of intestinal harmful bacteria, promote the reproduction of beneficial bacteria in the body, delay gastric emptying time, prevent obesity, inhibit the rapid rise of blood sugar, and prevent the symptoms of three highs. The 7th most important nutrient after protein, fat, water, vitamins, minerals!

a. Cellulose is a polysaccharide, not a disaccharide, and a is wrong;

b. Cellulose is a unique polysaccharide of plant cells, and human cells have no cellulose or cell wall.

c. Cellulose is a multimer formed by the polymerization of monosaccharides, which contains energy, but cannot be used as an energy substance for the human body.

d. The human body does not have the enzyme to consume cellulose, so the human body cannot digest and absorb cellulose

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