Nutritional components of bird's nest The main nutritional components of bird's nest
Modern medical research has found that the main components of bird's nest are water-soluble protein, carbohydrates, calcium, phosphorus, iron, sodium, potassium and other trace elements, and amino acids (lysine, cystine and arginine) which play an important role in promoting human vitality.
1000g dried bird's nest contains: protein 499g, calcium 429g, carbohydrate 306g, phosphorus 30mg, moisture 104g and iron 49g.
Analysis of Nutritional Components of Bird's Nest
1. protein-specific bioactive molecules in bird's nest contribute to the growth, development and recovery of human tissues after illness;
2. Carbohydrate is the main source of human body heat, which complements protein, so that protein can provide heat and promote fat metabolism;
3. Epidermal growth factors and water-soluble substances contained in bird's nest can directly divide, regenerate and rebuild tissues, so that bird's nest plays a great role in nourishing and repairing human body;
4. Calcium can enhance the blood coagulation ability when the skin is damaged, and also help the human body absorb vitamin B12;
5. Bird's nest is rich in minerals, active proteins and collagen, among which epidermal growth factor and water extract can strongly regenerate, divide and rebuild cells.
Biochemical analysis of bird's nest
Dictionary of Traditional Chinese Medicine (Shanghai Science and Technology Publishing House): Natural bird's nest contains water 10.40%, nitrogen-containing substances 57.40%, a little fat, nitrogen-free extract 22.00%, fiber 1.40% and ash 8.40%. Hairless bird's nest: its ash content is 2.52%, which can be completely dissolved in hydrochloric acid, with phosphorus content of 0.035% and sulfur1.10%; The reducing sugar obtained from the hydrolysis of bird's nest is at least 17.36% (calculated by glucose); There are several species in protein, and their nitrogen distribution is: amide (*** ide) nitrogen 10.08%, humin nitrogen 6.68, arginine nitrogen 19.35%, lysine nitrogen 3.39% and histidine. Bird's nest also contains hexosamine and mucin-like substances. Calcium, phosphorus, potassium and sulfur are the most common in ash.
What is the nutritional value of bird's nest?
Bird's nest is extremely rich in nutrition, including protein 49.9%, carbohydrate 365,438+0.5%, amino acids such as arginine, cystine and lysine, and a small amount of elements such as fat, phosphorus, sulfur, calcium and iron. It is a valuable high-grade tonic.
Bird's nest is sweet in taste, invigorating qi and nourishing lung yin, and is suitable for treating tuberculosis, hemoptysis, cough, esophageal cancer and other diseases.
1. Tuberculosis: 6-9g of bird's nest, 3-6g of American ginseng, stewed in water. Or 6-9g of bird's nest and 0/0g of tremella fuciformis/kloc, stir-fry together with water, and drink with appropriate amount of rock sugar.
2. Chronic bronchitis: 6 grams of bird's nest, 9 grams of tremella, and 0/5 grams of rock sugar/kloc-. First, soak the bird's nest and tremella, add rock sugar and stew in water.
3. Bronchial asthma: 65,438+02g of bird's nest and 65,438+02g of bletilla striata, simmered in a pot, filtered to remove residues, and flavored with crystal sugar.
4. Nausea and vomiting: 6 grams of bird's nest, blisters and water stew. After 250g of milk is boiled, take a proper amount.
How high is the nutritional value of bird's nest?
Experts say that the value of bird's nest is not as high as advertised in the market. In traditional Chinese medicine, bird's nest is no longer among Chinese herbal medicines. Wang Donglan, a professor at the Nutrition Research Office of the Academy of Military Medical Sciences, also believes that bird's nest food is rich in nutritional value. Long-term use can improve the body's immunity and balance endocrine, but eating it once or twice occasionally has no practical health care effect. Moreover, compared with its high price, the cost performance is not high, and it is the curiosity of the public that exaggerates its nutritional value. And if you really eat bird's nest with excessive nitrite content, it will not only be harmful to your health, but also harm your health.
Bird's Nest contains 50% protein, 30% carbohydrate, 5% iron, 3% other minerals and 0/.4% cellulose. Protein of bird's nest is mainly mucin secreted by epithelial cells (in other words, saliva), which only contains 1 essential amino acid (lysine) and 3 conditionally essential amino acids (some people lack it).
The human body needs 8 kinds of essential amino acids, 13 kinds of conditionally essential amino acid. Therefore, the protein nutritional value of bird's nest is extremely low, which has been confirmed by animal experiments. Feeding mice with bird's nest and another single food will lead to protein malnutrition. In other words, the nutritional value of bird's nest protein lies in quantity, not quality. However, people usually only eat occasionally. Therefore, the nutritional value of bird's nest in protein is far less than that of meat, soybeans and other high-protein foods.
Carbohydrate has no nutritional significance for people who are not short of nutrition. Erliang bird's nest can provide 345 calories, which is equivalent to Erliang rice cake or bread, but the price difference is 10 thousand times.
When it comes to the content of iron and minerals, bird's nest is really the best. The minerals in bird's nest, especially blood swallow, come from the infiltration of natural minerals or impurities brought in when bird's nest is built. These minerals are inorganic substances, which are absorbed little or no by human body, and their nutritional value can be ignored.
The last nutrient is cellulose, which is common in content. Eating an apple is worth four taels of cellulose contained in bird's nest.
In a word, bird's nest has a single function, unlike other foods we eat, which are mostly whole-cell foods and rich in all kinds of raw materials needed for organic life. In terms of nutritional value, bird's nest is just a low-grade food with limited nutrition.
Common reference books list eight functions of bird's nest: 1, nourishing yin and tonifying lung; 2. Tonifying deficiency and nourishing stomach; 3. Make up for the deficiency and comfort; 4. Strengthening spleen and benefiting qi; 5, beauty and skin care; 6, puzzle and brain; 7. Safe motherhood; 8. Prevention and treatment of tumors.
One of the efficacy principles of bird's nest is to believe that bird's nest contains egf (epidermal growth factor), and some people advocate that egf is a key component of bird's nest beauty. There are three reasons why this statement cannot be established. First, egf itself is a protein macromolecule (only small molecules such as iron will be directly attracted). If it enters the digestive tract, it will eventually be completely digested like other foods without any influence; Second, the egf content in bird's nest is very low, not as high as that in milk; Third, if egf can really grow, it is one of the causes of cancer, but it is afraid to eat it.
Many studies have proved that bird's nest extract can be combined with pathogens such as influenza virus, thus protecting cells from viruses. This kind of research is not enough to provide evidence to prove that bird's nest has corresponding functions as food, because the mechanism of action of bird's nest in vitro is completely different from that of human digestion, and the mechanism of human resistance to virus in vivo is also completely different.
Other propaganda functions, such as anti-aging, anti-fatigue, anti-radiation and cholesterol reduction, are basically nonsense, with no experimental evidence and no logical self-consistency in mechanism. It is said that bird's nest is naturally far away from pollution, with good environment, clean air and no radiation, so it can have these functions. For this reason, using natural selection factors, it can be said that natural bird's nest lacks resistance to these factors.
You know, no food is allowed to enter our body freely, and any ingredient must have a certain content to achieve a certain effect. Generally speaking, bird's nest can't provide most essential amino acids, and no substance can play those eight roles.
It should be noted that if bird's nest is regarded as a panacea, it will still be risky to recommend it regardless of people and occasions, especially to take it for granted that newborn babies and children can supplement the brain. Eating bird's nest in these people may cause allergic reactions, and even life-threatening in severe cases. In 2000, the journal of pediatrics summarized 39 reported cases with an average age of 6.5 years. Chinese mainland did not report these cases, not because China did not happen, but because doctors lacked knowledge or the ability to report cases. At present, the possibility of bird's nest allergy is generally underestimated
How high is the nutritional value of bird's nest?
Modern medical research has found that the main components of bird's nest are: water-soluble protein and carbohydrates; Trace elements: calcium, phosphorus, iron, sodium, potassium and amino acids (lysine, cystine and arginine) play an important role in promoting human vitality.
1000g dried bird's nest contains 499g of protein, 429g of calcium, 306g of carbohydrate, 30mg of phosphorus, 0/04g of water and 49g of iron. The unique protein content of bioactive molecules in bird's nest contributes to the growth, development and recovery of human tissues after illness. Carbohydrate is the main source of human body's heat, which complements protein, so that protein can not only provide heat, but also promote fat metabolism. Epidermal growth factors and water-soluble substances contained in bird's nest can directly divide, regenerate and rebuild tissues. Bird's nest has great nutrition and recovery effects on human body. Calcium can enhance the coagulation ability of blood when the skin is damaged, and also help the human body absorb vitamin B 12. Bird's nest is rich in minerals, active proteins and collagen, among which epidermal growth factor and water extract can strongly promote cell regeneration, division and tissue reconstruction.
Efficacy Bird's Nest is a silky substance secreted by Jin Siyan. It contains sialic acid, also known as bird's nest acid, which can enhance immunity and prevent bacteria from attaching to respiratory mucosa. Bird's nest is a healthy and nutritious food, which can be eaten by both men and women. Bird's nest contains three different nutrients, among which sialic acid (n- acetylpantothenic acid), epidermal growth factor (EGF) and colony forming factor (CSF) are the most special.
Bird's nest is a pure natural nourishing health food. Its main function is that sialic acid contained in bird's nest, also known as bird's nest acid, can enhance immunity, make bacteria not easy to attach to respiratory mucosa, and heal and repair damaged cells. The unique substance in bird's nest can repair the living cells of the body.
Bird's nest can repair living cells of skin and nourish dermis. There are two kinds of protein in the dermis of the skin: collagen and elastin, which support the skin and make it full and firm.
The effective substances in bird's nest can really make the skin tender and smooth, and have the effect of lifting and firming. Traditional Chinese medicine believes that bird's nest: "nourishing yin and moistening dryness, benefiting qi and tonifying the middle warmer, treating physical weakness, expectoration and asthma, hemoptysis and chronic dysentery, suitable for patients with physical weakness, malnutrition, chronic dysentery, cough with excessive phlegm, chronic bronchitis, bronchiectasis, emphysema, tuberculosis, hemoptysis and vomiting blood, stomachache, etc."
Modern medicine has found that bird's nest can promote immune function, delay human aging and prolong life. Generally speaking, bird's nest has the effect of health care: nourishing yin and moistening lung without dryness; Beauty care makes skin smooth, elastic and shiny; Supplementing qi and invigorating middle energizer, promoting blood circulation, improving digestion of stomach and absorption of intestine.
Treat lung yin deficiency, cough, night sweats, hemoptysis, etc. Treating nausea and retching caused by deficiency of stomach qi and stomach yin; Treat qi deficiency, hyperhidrosis and polyuria. As a natural nourishing food, bird's nest can be eaten by men, women and children.
In terms of sexual taste, bird's nest is flat and sweet. Judging from the meridian tropism, bird's nest belongs to lung, stomach and kidney.
From the efficacy point of view, bird's nest has five major effects: nourishing yin and moistening dryness, benefiting qi and tonifying the middle warmer, and caring skin. Bird's nest can promote cell division (not cancer cells), lymphocytes, promote kidney development, have immune and antibacterial effects, and maintain youthful vitality.
Bird's nest has the same effect regardless of origin and grade. Bird's nest is best stewed with peeled old chicken.
Bird's nest also has "domestic swallow" and "house swallow", which are made by living in a big ancient house and nesting. Bird's nest was only used as medicine in the Yuan Dynasty, and it can nourish the skin. Bird's nest is rich in protein, carbohydrates, ash, phosphorus, calcium, iron, potassium and other nutrients, which is a good product for nourishing human body.
What is the nutritional value of bird's nest?
The Bird's Nest is a nest made of saliva, feathers, etc. by Jin Siyan, an animal of Swift family, and many other swallows of the same kind. It looks like an ingot. The outer wall of the nest is made up of dense filaments, which are irregular prismatic protrusions, and the inner wall of the nest is woven into an irregular mesh by filaments, but the root of the nest bowl is solid, with a small drop angle at both ends, generally 6-7 cm in diameter and 3-4 cm in depth.
Mainly produced in South China Sea Islands of China and Southeast Asian countries. Bird's nest can be divided into three types due to different collection time.
The nutritional value of bird's nest is 1. Bai Yan: The first nest made in Jin Siyan for laying eggs and brooding was made entirely of saliva. White and transparent, with large wall thickness and high rising rate, it is the top grade of bird's nest, which was listed as a tribute in ancient times, so it is also called Gong Yan.
Mao Yan: The second nest was made in Jin Siyan, because saliva was consumed so much that Jin Siyan had to use fluff and saliva to build a nest. There are more black hairs mixed in the nest wall, and the quality is inferior.
3. Blood Swallow: The third nest made by Jin Siyan. At this time, the saliva was almost exhausted, so we had to make a nest with small fish and seaweed that had just been eaten and had not been digested. The nest is mixed with bloodshot, and a small wall is thin and hairy, with the worst texture.
Bird's Nest is nutritious, containing 50% protein, 30% sugar and some minerals. The prepared bird's nest can be steamed and made into soup, such as steamed bird's nest, clear soup bird's nest, rock sugar bird's nest, or pigeon eggs soup.
Bird's nest is the top grade with large bowl wall, small roots and feet, few feathers, thick tendons and bright white color. The main component of bird's nest is a variety of high-grade protein necessary for human body, which contains nitrogen, dietary fiber, minerals, vitamins and unique epidermal growth factor, and has a good nourishing and health-care function.
The edible effects of bird's nest are nourishing yin, moistening dryness, beauty beauty, delaying aging, clearing away deficiency heat and treating deficiency of bird's nest. 1. Older people, people with weak constitution, postpartum or lactating women and women who love beauty are more suitable.
2. Children should be careful when eating; Deficiency of both lung and stomach, cold and dampness blocking phlegm, and mourning evil spirits are contraindicated.
Is the nutritional value of bird's nest really that high?
The nutritional value of bird's nest is very low, and the high nutritional value is attributed to commercial speculation.
The nutritional value of protein is far less than that of meat, soybeans and other high-protein foods. Unlike other foods we eat, bird's nest is mostly whole-cell food, which is rich in all kinds of raw materials needed for organic life. In terms of nutritional value, bird's nest is just a low-grade food with limited nutrition.
Bird's Nest contains 50% protein, 30% carbohydrate, 5% iron, 3% other minerals and 0/.4% cellulose. Protein of bird's nest is mainly mucin secreted by epithelial cells (in other words, saliva), which only contains 1 essential amino acid (lysine) and 3 conditionally essential amino acids (some people lack it).
The human body needs 8 kinds of essential amino acids, 13 kinds of conditionally essential amino acid. Therefore, the protein nutritional value of bird's nest is extremely low, which has been confirmed by animal experiments. Feeding mice with bird's nest and another single food will lead to protein malnutrition.
In other words, the nutritional value of bird's nest protein lies in quantity, not quality. However, people usually only eat occasionally. Therefore, the nutritional value of bird's nest in protein is far less than that of meat, soybeans and other high-protein foods.
What are the nutritional components of bird's nest?
First of all, bird's nest is Jin Siyan's nest, which is Jin Siyan's saliva. The main components of bird's nest are water-soluble protein, carbohydrates, trace elements such as calcium, phosphorus, iron, sodium and potassium, and amino acids which are very useful to human body. Dried bird's nest contains protein, calcium, carbohydrates, phosphorus, water, iron or other nutrients, which plays an important role in human vitality and can participate in the growth and development of human tissues. According to industry data, the quality of bird's nest in Tongrentang and Fulinmen is very good, among which Fulinmen is famous for its high cost performance. The best way to cook bird's nest is to boil it in water, but there are some troublesome jobs to do before eating bird's nest. First put a bird's nest in a bowl, and then add boiling water, the amount of water should completely cover the bird's nest. After 2 hours, change the water once, then continue to soak for 3 hours, and then put it into a filter screen to wash away impurities. Be careful not to pour the water all at once, just pour about half at a time, and repeat it many times until it is clean.
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Is bird's nest that nutritious?
Bird's nest is really not that nutritious. Most of the other foods we eat are whole-cell foods, which are rich in all kinds of raw materials needed by the human body.
The components and functions of bird's nest are single, and the nutritional components of bird's nest are limited in terms of nutritional value. "Bird's Nest" is an excellent beauty tonic in Chinese medicine, but from the perspective of western medicine nutrition, its protein content is 49.9%, which is not as good as the same amount of crab meat, and its protein is mainly collagen, which belongs to incomplete protein. In this sense, the nutritional value of bird's nest is not as good as that of eggs and meat.
The sugar content is 30.6%, which is not as good as the same amount of grain; Its fat content is 0.3%, which is not as good as the same amount of meat and soybeans, so bird's nest has no particularly high nutritional value. Extended data:
Bird's Nest contains 50% protein, 30% carbohydrate, 5% iron, 3% other minerals and 0/.4% cellulose.
Protein of bird's nest is mainly mucin secreted by epithelial cells (in other words, saliva), which only contains 1 essential amino acid (lysine) and 3 conditionally essential amino acids (some people lack it). The human body needs 8 kinds of essential amino acids, 13 kinds of conditionally essential amino acid. Therefore, the protein nutritional value of bird's nest is extremely low, which has been confirmed by animal experiments.
The nutritional value of bird's nest protein lies in quantity, not quality. Therefore, the nutritional value of bird's nest in protein is far less than that of meat, soybeans and other high-protein foods.
References:
People's Network-Is the nutritional value of bird's nest low? Reveal the health lies of the three "noble" supplements.
What is the nutritional value of bird's nest? How many dishes are higher than it?
The average content of nutrients in Bai Yan and Xueyan, the nutrients in Xueyan in Bai Yan are water (%) 9.25 8.67 crude ash (%) 8.22 1 1.43 crude protein (%) 58.62 56.34 total sugar (%) 24.62 22.75 calories (kcal//. Constitute and repair human tissues II. Composition 3 of enzymes and hormones. Constitute antibodies against bacteria and viruses. Adjust osmotic pressure by 5. Supply energy. Bai Yan and Xueyan average amino acid content (%) Amino acid type Bai Yan Xueyan aspartic acid 5.33 4.94 threonine 4.22 4.438+. 0 serine 3.53 3.64 glutamic acid 4.28 3.7 1 glycine 2. 12 1.97 alanine 1.6 1.45 methionine 4.00 3.75 methionine 0.320.28 * * leucine 2.55. 2 tyrosine 4.655 acid 0.84 0.77 cystine 1.59 1.45 sum 56.6 1.54.36 amino acids are the basic units of protein, and essential amino acids must be obtained from food, and lysine, tyrosine, methionine, leucine, phenylalanine, threonine and tryptophan are essential amino acids.
Lysine synthesis can promote the synthesis of fatty acids in cells; Tyrosine can be converted into norepinephrine and epinephrine secreted by adrenal medulla in human body; Sulfur composed of methionine is essential for the formation of coenzyme A and taurine. Leucine is a branched-chain amino acid, which has special significance for the synthesis and decomposition of muscle protein under stress conditions such as surgery and trauma, and has been paid full attention to in surgery and sports nutrition. Histidine must be obtained from food and cannot be synthesized for babies. The histidine formed has a strong vasodilating effect, which can inhibit a variety of allergic reactions and inflammation.
Alanine, glutamic acid, glutamic acid, aspartic acid, glycine, serine, proline and cystine can be synthesized in human body. Glutamate is a compound related to the function of nervous system.
Daily requirement of amino acids (amino acids contained in bird's nest) (mg/kg body weight/day)-1983 FAO/WHO World Health Organization standard infant 2-year-old child1kloc-0/2-year-old adult leucine 17345 14 lysine/kloc. 2 methionine+cystine 58 27 6543825 69 27 14 threonine 87 37 35 7 tryptophan 17 12.5 4 3.5 The average content of various elements in Bai Yan and Xueyan is Bai Yan Xueyan sodium (%)1.381. 438+08 0.24 phosphorus (%) 0.0 1.03 potassium (ppm) 208 297 copper (ppm) 8.3 8.9 zinc (ppm) 38 25 iron (ppm) 1 14 47 Physiological functions of minerals:/kloc- Constitute the body. An important part of extracellular fluid. 2. Its buffering function can maintain the acid-base balance of the body. 3. Keeping a certain proportion of inorganic ions in the tissue fluid is a necessary condition to maintain the excitability of nerves and muscles, the permeability of cell membrane and the normal function of cells. 4. It is an important part of some special functional substances. Here is a comparison: The authoritative chinese national geography pointed out in the special issue of Spring Festival in 2004 that the fat content of bird's nest (0.35) is the lowest. It's1/4 for tremella,1.4 for tofu,114 (4.8) for eggs,118 (6.4); The total amount of essential amino acids in bird's nest (18.64) is the highest, which is 8.3 times (2.22) of tremella, 5.4 times (3.47) of tofu and 4 times (4.6 1) of eggs. Essential amino acids must be obtained from food and cannot be synthesized by human body.
According to the preliminary identification of bird's nest in the laboratory, most researchers have realized that pure bird's nest mainly contains water-soluble protein, fat, eight essential amino acids, sodium, iodine and other elements. Compared with eggs, tofu and tremella, the contents of protein and eight essential amino acids in bird's nest are much higher.