Many people have long remembered the phrase "eat donkey-hide gelatin to replenish blood". However, this is just a "beautiful misunderstanding".
Ejiao is basically a product made of donkey skin, and its main component is collagen, which is not much different from the pigskin jelly we usually eat. From the point of view of nutrition, the nutritional value of collagen itself is not high, and it will be decomposed into amino acids after entering the body. Moreover, collagen itself is a kind of "inferior protein", which lacks tryptophan necessary for human body and contains a lot of nonessential amino acids, so it is not a high-quality protein source.
The matter of "Colla Corii Asini replenishing blood" is not established in itself, and the amount of mineral iron and vitamin C contained in it is very small, which does not have much effect on iron supplementation. The essence of "enriching blood" is actually "promoting hemoglobin synthesis by supplementing nutrition", but the main substance in Ejiao-"collagen" has no miraculous effect of enriching blood, and its ability to promote hemoglobin synthesis can be completely ignored; Donkey skin is not magical, Ejiao will not become magical because it comes from donkey skin, and its actual function is not as good as that of eggs (quality and protein absorption rate, etc. ); Giving gifts with Ejiao has low practical value. Don't be fooled by outside propaganda. There is no tax on holiday today, and milk and eggs are better (the key is material welfare).
Looking at the essence through the phenomenon, Ejiao is just "boiled donkey skin".
The Bird's Nest, as can be seen from the text, was built by Jin Siyan.
Said that Jin Siyan is actually a bird; "Bird's Nest" is generally abundant in Southeast Asia. It is a nest built by Jin Siyan and other Yuyan after eating small fish and seaweed in the sea and digesting digestive gland secretions and down feathers. Because it is often built on the cliffs of islands, it looks like a bird's nest on land, so it is called the "Bird's Nest".
The nutritional value of bird's nest has been "praised" by various businesses and advertisements. When it comes to supplements, many people will think of them. However, according to the "food composition" analysis of bird's nest, every 100g of dry bird's nest contains 49g of protein, 30g of carbohydrate, 0/0g of moisture and a few minerals of calcium and iron.
It can be seen from its simple nutritional ratio that there is nothing "unusual" between bird's nest and the food we usually eat. Most foods contain these nutrients. In contrast, the "quality" of some ordinary foods is higher than that of bird's nest. Carbohydrate is actually what we usually call "sugar". Basically, it is found in all kinds of food, and there are many. It can provide basic energy (heat) for the human body, and there are not many nutritional functions worth promoting; Let's talk about protein, a bird's nest with large nutrients. The content is indeed quite a lot, but the quality of protein is mainly based on the composition of amino acids in protein, and the proportion of amino acids in bird's nest protein is incomplete; Moreover, in comparison, the number of "Bird's Nest" is very small at a time, so there is nothing to show off about its protein. In other words, protein, who eats bird's nest supplements, is not as reliable as eating eggs. That is to say, most people who want to rely on bird's nest to "supplement" might as well eat more "fish, meat, poultry, eggs and milk" in their lives. Not only is protein particularly rich,
One more thing. People who sell bird's nest often say that bird's nest contains a substance that is extremely magical, detoxifying and beautifying, scavenging free radicals, fighting cancer and enhancing immunity. He is called sialic acid.
The chemical name of sialic acid is "N- acetylneuraminic acid", which can indeed be extracted from the protein complex of bird's nest, and sialic acid accounts for 3% 15% of the dry matter of bird's nest. It does have a certain health care function, but there is a problem that needs everyone's attention. The amount of bird's nest that people eat in daily life is completely different from the amount that scientists put into mice when they do experiments, so one truth prevails. : sialic acid is just one for us.
In other words, "bird's nest" is not magical, and its intake will not bring any "magical supplement" to the body; Giving gifts with bird's nest may just be "beautiful".
Propolis refers to "a colloidal mixture of resins collected by honey from flower buds of various plants, secretions of mandibular glands of bees and beeswax". It is mainly used by bees to fill the gaps in the hive and narrow the door of the hive, which plays a certain protective role.
Propolis is a very magical substance. There are many health legends, such as anti-bacterial, anti-inflammatory, anti-oxidation and anti-cancer. There are many studies on various effects, but some results are inconsistent, such as some are effective and some are ineffective.
For "anti-cancer", this is a "comprehensive state", including diet, exercise, living habits, chronic disease treatment, environment and other aspects; Propolis is not magical, and simply eating propolis has no magical anti-cancer effect.
Although cancer is difficult to cure, we still need scientific treatment; Not afraid, not blind; Food and health products are not medicines and have no "therapeutic" effect.
Any substance has its "unique nutrients", so does propolis. Propolis contains a variety of nutrients, such as fat, amino acids, vitamins, minerals and other substances, of course, including phenolic acids, flavonoids and volatile oil and other "effective substances."
In 2002, the former Ministry of Health issued the Notice on Further Standardizing the Management of Raw Materials for Health Food, which made it clear that propolis belongs to the category of commodities that can be used for health food, not ordinary food.
At present, there are only three approved functions of propolis in China: assisting in lowering blood fat, assisting in lowering blood sugar and enhancing immunity; Propolis is not a "medicine for treating diseases". Please have a correct attitude and read the instructions carefully when buying.
Please make it clear that ordinary people do not recommend taking propolis casually; Not ordinary food, please choose according to the doctor's advice.
For "propolis", it is not a magical "tonic", and the "nutrients" contained in it are also found in ordinary vegetables and other foods; What needs to be more careful is that although the toxicity of propolis extract is very low at present, it may still contain some allergic substances, so people with allergies should choose carefully.
On the whole, the research on propolis is generally animal or cell experiments, and it is impossible to draw a conclusion in medicine; People are different from animals and cannot be directly replaced. I hope everyone can treat it scientifically.
In fact, whether it is donkey-hide gelatin or bird's nest, or so-called "high-end gifts" such as shark's fin and cordyceps, although it has a lofty position in the hearts of the people, it is not excellent in essence.
First, according to the evaluation standard of food nutrition, they can even be classified as "inferior food".
Secondly, from the perspective of empirical science, these substances do not contain "ingredients with special effects".
Third, their popularity is the result of "traditional ideas" and "marketing", but whether they are healthy or not lacks scientific basis, it is better not to pay "IQ tax".
Adhering to the principle of being healthy, affordable and refusing to pay IQ tax, I suggest you give these gifts to your elders:
1. Dairy foods such as milk and egg foods such as eggs and nuts are "fresh, hygienic and healthy foods".
2 "comprehensive medical appointment form" or "reasonable medical insurance".
3. A safe and healthy "thermos cup (pot)".
4. "Practical health appliances" such as air purifiers and air humidifiers that are suitable for home life of the elderly.
5. "Big-screen smart phone" or "tablet computer" suitable for middle-aged and elderly people (mental health is also an important part of health).
6. More companies ...
On holidays, "giving gifts" is always an important part, not to mention such an important Spring Festival. For a series of common "high-end gifts" such as Ejiao, bird's nest and propolis, please polish your eyes and treat them scientifically; Send sincere, effective and practical "health gifts" to add a trace of happiness to the elders, and wish everyone "healthy and happy, happy New Year" in advance.