Question 1: What are the raw materials of donkey-hide gelatin? Dong'e County, Shandong Province has a long history of boiling donkey-hide gelatin. By the late Qing Dynasty, the gelatin boiling industry developed rapidly and the gelatin-making technology gradually matured. During the off-farm season, almost every village in Dong'a County sets fires and every household boils glue. They set up tents and workshops, and used large pots and mulberry wood to boil glue. From raw material processing to glue boiling, glue cutting, glue drying, and glue rubbing, more than 50 processes were all done by hand. There are many mysteries involved in the impact of raw materials from different seasons and different origins on the finished glue, how to use the fire at different times to boil the skin and boil the glue, how to control the temperature of adding water, and how to control the temperature of the glue.

Many people know that donkey hide gelatin is made from donkey skin as the main raw material. The main component of donkey skin is collagen. Collagen is the most abundant and widely distributed protein in animals. The unique hydroxylysine of this functional protein is an essential material basis for human bones and connective tissues. However, the original raw material used to brew donkey hide gelatin was not donkey skin. According to the "Famous Doctors" in the Wei, Jin, Southern and Northern Dynasties, it was named " Boiled cowhide is the most popular, followed by donkey, camel and mule skins. "Why did donkey skin replace cowhide later?"

After the Tang and Song Dynasties, there were frequent wars. Cowhide was mainly used for military supplies. Therefore, there was a saying at that time that the official ban on cowhide meant that cowhide was controlled by the ***, which meant that civilians were not allowed to use cowhide. During the war, some saddle boots and armor were made of cowhide, so the use of cowhide was no longer allowed. Gradually, the transition was made to using donkey skin. Later, it was discovered that donkey skin was better. The practice of more than two thousand years of history has proven that donkey skin is indeed the best. And it is recorded in ancient medicinal books that donkey hide gelatin is better than other glues. It is called donkey hide glue better than other glues

Generally speaking, as long as you have donkey skin, you can boil the gelatin. But why is the donkey-hide gelatin produced in Dong'e the most famous among the donkey-hide gelatin recorded in ancient books? This is not just because the areas around Dong'a produce Texas donkeys with shiny black fur, large bodies and high glue production rates, which are most suitable for refining donkey-hide gelatin. It is also not entirely because the locals in Dong'e have a tradition of refining donkey-hide gelatin since ancient times. Mastering the technology of boiling gelatin, there is one thing that is lacking in many places. This is another main reason why donkey-hide gelatin is most famous as being produced in Dong'a, and that is water. What is the difference between the local water in Dong'a and the water in other places? Regarding Dong'a water, Li Daoyuan's "Shui Jing Zhu" records: "There is a well in Dong'a as big as a wheel, which is used to boil glue every year to pay tribute to the heaven." It was also determined that the Dong'e groundwater is an underground underflow in Jihe River, Jiyuan County, Henan Province, and the water is filtered through underground rocks and gravel layers.

Dong'a's groundwater is different from others. Its relative density is 1.0038. The relative density of 1.0038 can be said to be much heavier than other water. If you think about it, pure water is 1 and other water is 1.01. In this case, Dong'a's groundwater is 1.0038. One cubic meter of water is more than three kilograms heavier than other water

Let's do an experiment. The water in this cup comes from the groundwater 300 meters underground in Dong'a, but if we put a If a coin is placed on the water, the coin will float, but on the water filled with pure water, no matter how careful the staff is when placing it, it will never float. Why can the local groundwater in Dong'a float coins?

Why is this water heavy? The main reason is that it contains a large amount of mineral elements and trace elements. These mineral elements and trace elements make the water relatively dense. What are the benefits of this water for boiling glue? It is The process of boiling is conducive to the separation of impurities because the process of boiling gelatin is a process of separation of collagen and non-collagen proteins. We have also done experiments in this area. Boiling donkey-hide gelatin with pure water is a mess when it is not separated.

In fact, as early as Li Shizhen's "Compendium of Materia Medica", the benefits of boiling donkey-hide gelatin with Dong'e water were elaborated: "The water is clear and heavy, and its nature tends to be downward, so it can cure turbidity and reverse symptoms." Phlegm."

In the past, people only thought based on clinical practice that the efficacy of donkey-hide gelatin produced in Dong'e may be better than that produced in other places. However, it is difficult to explain why. Today, after scientific testing of local groundwater, Only then did we have the answer.

Question 2: What materials are used to make donkey-hide gelatin? Donkey-hide gelatin is also known as basin glue and donkey hide glue. It is a glue block made from donkey skin. The production method is: first scrape the donkey skin to remove the hair, cut it into small pieces, add water and simmer for 3 days and nights. When the juice is thickened, take out the donkey skin pieces and add water to simmer. How to identify donkey hide gelatin: Donkey hide gelatin is also known as donkey hide gelatin. It is a glue block made from the skin of an equid donkey after removing its hair. Donkey-hide gelatin is a special medicine. Stir-fried donkey-hide gelatin with clam powder can improve the effects of clearing away heat and moistening the lungs, resolving phlegm, and dispersing stagnation. Stir-fried donkey-hide gelatin with puhuang can enhance the blood-enriching effect. Drug identification: Donkey-hide gelatin is in the shape of a neat square block, usually about 3 cm long, 3 cm wide and 0.5~0.7 cm thick. The surface is brown-black or brown-red, smooth and shiny, with weak odor and slightly sweet taste. It is transparent to light, hard and brittle, and the color of the cross section is the same as the surface. The best ones are those that are straight-drying, brown-black in color, bright, transparent, have no fishy odor, and do not soften over the summer. Empirical identification: ① Those that are transparent to light, pure and free of impurities, and have a dark brown-red or tan color like amber are genuine. ② The material is hard and fragile, and the cross section has a brown glass-like luster. ③ Those with weak odor, slightly sweet taste, and no fishy odor are genuine products.

Question 3: Who knows what raw materials Dong’e donkey-hide gelatin is made of? Donkey-hide gelatin, ginseng and velvet antler are also known as the "Three Treasures of Traditional Chinese Medicine" and are precious traditional Chinese medicines. It is also known as donkey skin gelatin and fuzhijiao. It has obvious blood-enhancing and fitness-building effects and is known as the "holy medicine" of blood-enriching. It has been a treasure paid tribute to the imperial court since the Northern Wei Dynasty or earlier. 1 Source and place of production 1.1 The source is the gelatin block made from the skin of the equid donkey (Eguns asinus L.). A long time ago, our ancestors discovered that the juice of long-cooked animal skins can be concentrated into a viscous substance. It is used to stick objects and is strong and difficult to break after drying, so people discovered the substance "glue". After eating glue, it became a kind of medicine to treat certain diseases. Ancient doctors wrote "Fifty-two Prescriptions for Diseases." "Shen Nong's Materia Medica" lists it as top grade, and has been discussed in subsequent generations of Materia Medica. The "Compendium of Materia Medica" of the Ming Dynasty gave a more detailed description: "Donkey-hide gelatin is used to treat vomiting blood, epistaxis, bloody stranguria, hematuria, intestinal wind and dysentery, women with painful blood and dry blood, irregular menstruation, childlessness, metrorrhagia, vaginal discharge, and miscarriage." It is also a holy medicine for prenatal and postpartum diseases. "Before the Tang Dynasty, the raw material of donkey-hide gelatin was mainly cowhide, and pig, donkey, horse and other skins were also used. In the Song Dynasty, the main material was changed from cowhide to donkey skin. "Compendium of Materia Medica" calls donkey hide gelatin "donkey-hide gelatin" and cowhide gelatin "yellow gelatin", which are clearly divided into two types of medicines. The Pharmacopoeia of various editions of the People's Republic of China and the People's Republic of China use donkey hide gelatin as "donkey-hide gelatin". 1.2 Place of Origin "Shen Nong's Materia Medica" of the Western Han Dynasty records that "donkey-hide gelatin" was produced in Dongping County, boiled cowhide, and came out of Dong'e, which was listed as top grade. Liang Dai Tao Hongjing said: It came out of Dong'e, so it was named "Donkey-hide gelatin", which shows that the origin of donkey-hide gelatin is in Dong'e. Records about Dong'e County date back to the Qin Dynasty for more than two thousand years. In the long history, due to wars, floods and administrative needs, there have been several changes. Now Dong'a Town in Pingyin County and Acheng Town in Yanggu County were once the residences of Dong'a County. Today's Dong'a County is Established in 1948. Langxi River, Shi'er Mountain, Liulijing, Ajing, etc. that are said to be related to donkey-hide gelatin are located in this area. Therefore, from a historical perspective, the origin of donkey-hide gelatin should be in this area. Dong'e Ejiao Group, the largest domestic donkey-hide gelatin production enterprise, and Dong'e Ejiao Co., Ltd. of Shandong Fukiao Group are also located here. There are currently more than 50 donkey-hide gelatin production plants in the country. They are produced in Shandong, Hebei, Henan, Beijing, Jilin, Hunan, Anhui, Heilongjiang, Gansu, Inner Mongolia, Liaoning and other provinces, cities and districts. Shandong has the largest output, accounting for approximately 10% of the total output. of 80 and above. Shandong donkey-hide gelatin is famous for its authenticity. It not only has exquisite selection of materials and exquisite craftsmanship, but is also closely related to the local water quality. According to legend, the ancient method of making glue is to select pure black healthy donkeys every spring, feed them with grass from Shier Mountain, drink water from Langxi River, slaughter them in winter and take the skins, boil them in a silver pot with Ajing water and Langxi River water, stir with a gold shovel, and add ginseng. , Qi, Gui, Xiong, licorice and other concoctions are decoctioned with mulberry wood and firewood for three days and three nights, condensed and cut into pieces and dried in the shade.

According to investigations, the water used for local donkey-hide gelatin processing contains a certain amount of certain inorganic ions, which is beneficial to the hydrolysis of proteins and the removal of impurities during the processing. There are too many inorganic ions and the specific gravity of water is large, which can easily cause the ash content of donkey-hide gelatin to exceed the standard. If the specific gravity is too small, impurities are difficult to remove. In 1980, someone tested the water used in donkey-hide gelatin production in Shandong, Beijing, Tianjin, Shanghai, Zhejiang and other places. It was found that the proportion of water used in gelatin production in Shandong was between 1.0028 and 1.0038, while that in other producing areas was between 1.0011 and 1.0018. The difference between the two was obvious. 2 Functions and ingredients of donkey-hide gelatin 2.1 Functions of donkey-hide gelatin Ejiao is sweet in taste and neutral in nature. It enters the lung, liver and kidney meridian and has the functions of nourishing yin and blood, moistening dryness, hemostasis, and preventing miscarriage. It is used to treat blood deficiency and chlorosis, dizziness and palpitations, muscle weakness, restlessness and insomnia, internal movement of wind due to deficiency, dryness of the lungs and cough, hemoptysis and vomiting of blood, hematuria and bloody stools, metrorrhagia, irregular menstruation in women, and fetal leakage in pregnancy. 2.2 Composition of donkey-hide gelatin 2.2.1 Basic component The basic component of donkey-hide gelatin is the degradation product of procollagen contained in donkey skin. Lu Zixian et al. used SDS-polyacrylamide gel electrophoresis to determine the molecular weight of donkey-hide gelatin to be 80,000 to 200,000. After hydrolysis of donkey-hide gelatin, more than 18 kinds of amino acids have been measured, 8 of which are essential for the human body. 2.2.2 Measurement of trace element atomic absorption and emission spectra. There are 27 kinds of trace elements in donkey-hide gelatin, 9 of which are necessary for the human body. Among them, the contents of iron, copper, magnesium, zinc and strontium are relatively high. 2.2.3 Other ingredients Recently it was discovered that donkey-hide gelatin contains dermatan sulfate. This ingredient is mainly used to treat cardiovascular diseases, and there are already manufacturers producing such drugs. 3 Pharmacological effects of donkey-hide gelatin 3.1 Nourishing blood and nourishing donkey-hide gelatin The effect of donkey-hide gelatin on nourishing blood and blood is obvious...gt;gt;

Question 4: What are the main raw materials of donkey-hide gelatin? The main raw materials of Dong'e donkey-hide gelatin are donkey skin, rice wine, soybean oil, rock sugar, etc. Its main ingredients are collagen, which can be absorbed by the human body, and some vitamins that the human body cannot produce!

Question 5: What is donkey-hide gelatin? It is a solid glue made by boiling and concentrating donkey skin

Soak the donkey skin in water for about 2 to 3 days to soften it, then take it out Scrape off the donkey hair, cut it into small pieces, wash it with clean water, put it into boiling water and simmer for about a quarter of an hour. When the skin is rolled up, take it out, put it in another covered pot, add water until the donkey skin is submerged, and simmer for about three days. Three nights, when the juice is thick, take it out, add water and cook again, repeat this 5 to 6 times, until most of the colloid has dissolved. Filter the resulting juice through a fine copper wire sieve, add a small amount of alum powder to the filtrate, stir, and let it sit for several hours. After the impurities precipitate, collect the upper solution and heat and concentrate. Add flavoring and flavoring agents (1,000 kilograms of donkey skin plus 7.5 kilograms of rice wine and 15 kilograms of sugar) 2 hours before glue is produced. Add soybean oil (1,000 kilograms of donkey skin and 15 kilograms of sugar) half an hour before glue is produced to reduce the glue content. The stickiness. Use a spatula to pick up the glue and stick it together until it no longer falls into the pot. Put it into a wooden plate lined with lead skin. Apply soybean oil on the lead skin in advance to avoid adhesion. When the glue solidifies, take it out and cut it into small pieces. The piece is 10 cm long, 4 to 4.5 cm wide, and 1.6 cm or 0.8 cm thick. Put it on a wire rack to dry, turn it every 2 to 3 days to avoid unevenness on both sides. After 7 to 8 days, place it neatly in a wooden box, seal the box and flatten it. After the skin softens, take it out and spread it out to dry. Stuff it again and then dry it (you can also use blast drying method). Before packaging, wipe off the outer surface with a damp cloth, and you have the finished product.

Question 6: What material is donkey-hide gelatin made of? Donkey-hide gelatin is made from donkey skin as the main raw material, boiled with water from Ajing (the glue cooked without adding water from Ajing is called donkey skin glue, donkey gelatin ). Ejiao collagen is produced in Gudong'a County, Shandong Province, using water from ancient Ajing (ancient Ajing is in Acheng Town, Yanggu County, Shandong Province today). The best ones are amber in color, transparent and odorless.

Question 7: What are the raw materials of donkey-hide gelatin? Does anyone know? Donkey hide donkey water

Question 8: The raw materials used in donkey-hide gelatin cake are donkey-hide gelatin, red dates, wolfberry, walnut kernels, and longan Meat, sesame seeds, rock sugar, rice wine.

Question 9: Which dynasty does donkey-hide gelatin come from? Donkey-hide gelatin has a long history in China. It has a production history of two thousand years. It was first recorded in the "Shen Nong's Materia Medica" and was listed as top grade. According to records in many ancient books, it is known that the raw materials of ancient donkey hide gelatin were cowhide, donkey skin and various other animal skins.

In the Tang Dynasty, people gradually discovered that using donkey skin to brew donkey hide gelatin had better medicinal effects, so they switched to donkey skin and it is still used today.

Donkey-hide gelatin is a solid glue made from the skin of equids and donkeys. It is produced in Dong'e County, Shandong Province and has a history of nearly three thousand years. Donkey-hide gelatin is a traditional top-grade nourishing and blood-tonifying elixir. It has a sweet and mild taste and enters the lung, liver and kidney meridian. It has the functions of nourishing blood and stopping bleeding, nourishing yin and moisturizing dryness. It can be used as medicine and food. Long-term use can nourish blood, whiten and nourish skin, and resist aging. , resist fatigue, improve immunity, and is suitable for a wide range of people. Li Shizhen's "Compendium of Materia Medica" records: "Donkey-hide gelatin is the top grade in the "Benjing". Hongjing said: 'It came out of Dong'e, so it was named donkey-hide gelatin'". Donkey-hide gelatin is a typical traditional Chinese medicinal material that emphasizes "authenticity". Authentic donkey-hide gelatin must be refined by absorbing the water of Dong'e and inheriting the secret skills of the inheritors. The surface of authentic donkey-hide gelatin is smooth, without oil pores, hard and brittle, and the cross-section is bright and delicate. The fragments appear brown and translucent when viewed in the light. Li Shizhen praised that it is as yellow as amber and as black as paint."