Blood Swallow is a kind of cave swallow. Jin Siyan nests on the rock wall of the cave. The minerals in the rock wall slowly penetrate into the bird's nest through the contact surface between the bird's nest and the rock wall or through the dripping water from the rock wall. When the iron element is in the majority, it will show some irregular and smudged rust red. We call this blood swallow. There is no such thing as a "blood swallow" in bird's nest products. If the swallow vomits blood, it will definitely get sick, and it will not bring any nutrition or nourishing effect to consumers at all. China's CCTV also quoted Su Zhixiong, acting president of Perak Bird's Nest Association, as saying, "There are no blood swallows at all, and the' blood swallows' 100% on the market now are fake". "Blood Swallow" is a red bird's nest, and Southeast Asia has always been called Red Swallow. Blood swallow is not the result of Jin Siyan vomiting blood, because red hemoglobin will only be oxidized to dark brown methemoglobin. Blood Swallow is related to food and minerals in Jin Siyan, which contains more and less minerals, so its price is high. Bird's nest is a kind of precious food, which is divided into blood swallow, yellow swallow and Bai Yan according to color. Blood swallow is sought after as a treasure in bird's nest because of its bright red color, rich nutrition and low yield. The formation of true blood swallows needs the combination of various conditions, which is extremely accidental, and it is rich in nutrients such as iron and minerals. Its main functions are nourishing yin, moistening lung, tonifying deficiency, beauty beauty, regulating disorder of viscera and meridians, relieving stress, supplementing physical strength and so on. At present, it is more reliable to say that the bird's nest containing minerals is oxidized by hot air and turned into orange-red color after the meeting. According to people who have climbed the Bird's Nest Mountain, the nests outside the cave are all pearly white. The deeper you go inside, the bird's nest on the rock wall begins to turn yellow, and then you can see the orange-red bird's nest in the deepest cave belly. This is very different from the bright red blood swallow in the market. The formation of true blood swallows needs the combination of various conditions, which is extremely accidental, so the yield is extremely rare. The probability that ordinary consumers can buy real blood swallows is really slim. On August 20 1 1 year 16, Zhejiang Industrial and Commercial Bureau sampled and detected 30,000 blood swallows, and all the nitrite exceeded the standard seriously, with the highest exceeding standard of 350 times! The internet is crazy about "poisonous blood swallow!" At present, there are many theories about the causes of blood swallows. The first theory is that Jin Siyan builds nests three times a year, and the first nest is thick and white. Because Jin Siyan has a long winter and has a long time to recuperate, it has stored enough nutrients in its body, and its saliva quality is excellent, so the nest built is better and thicker, and its shape is especially good, so it is called Yanzhan, which is the best in bird's nest. In June, Jin Siyan built a nest again. Due to the short distance, his physique could not be fully recovered, so the quality of the nest was poor, and it was thin and hairy, which was obviously slightly worse than the first time. In September, Jin Siyan made a nest for the third time. It was said that because Jin Siyan was on the verge of production and time was pressing, her physical strength and saliva could not be fully supplemented, and she needed to feed the young swallows urgently. Therefore, the nest for the third time was definitely worse than the previous two times. Therefore, it was not credible to choose more feathers and impurities to mix, and because of insufficient saliva, even blood was spit out and became blood swallows. There is another saying about the blood swallow. In order to learn from the previous two experiences, Jin Siyan built his nest on a rocky cliff for the third time. Due to the climate, the bird's nest was moistened by the red liquid oozing from the attached red rock wall, and the bird's nest was completely red, so it was called "blood swallow". However, this theory was overthrown around April 2009, and Jin Siyan, who lives in a house with swallows, was only gray-white, whether it was the first nesting or the twentieth nesting. This lie was first spread by some Indonesian Chinese and businessmen from Hong Kong and Taiwan. Only Dongyan can produce blood swallows, and the output is extremely rare. Nowadays, it is popular to eat pregnant women's blood swallows in Jiangsu and Zhejiang provinces, but I don't know that 99% of the blood bird's nest eaten is fake or added. The third way of saying that there is a kind of bird's nest called "blood swallow", many people mistakenly think that it is called "blood swallow" because the swallow lacks saliva and spits out blood to build a nest. In fact, the blood swallow is built by a kind of "Jin Siyan with brown tail", and the nests built by other kinds of Jin Siyan may also change to blood red due to the influence of food or external environment. This swallow may drink different water quality, or its saliva may be red due to factors such as minerals, so it builds a "blood swallow" nest. There is another folk saying about Jin Siyan's nesting three times, that is, because the nest was taken away by people, he had to nest again in desperation. A more reliable statement: In fact, blood swallows are all from nests built on the rock wall of caves in Jin Siyan. Generally, they are shaped like a palm half closed to hold water samples, but they will also change due to different attached environments. Most of them are spherical or triangular in shape of 1/4. There are three main reasons for the color of the swallow nest: first, Jin Siyan eats food such as coastal algae and insects flying ants in the mountains, so its saliva contains more minerals, and the swallow nest is easily oxidized to red; Second, the minerals contained in the rock wall of Wannian gradually penetrate into the nest through the contact surface between the nest and the rock wall, and the natural minerals in the cave drop into the bird's nest, resulting in color changes; Third, the air in the cave is very sultry, and the deeper it goes into the cave belly, the more sultry it is. The bird's nest containing minerals is oxidized by the sultry air and turned into gray-red or orange-red color. According to people who have climbed the Bird's Nest Mountain, the nests on the periphery of the cave are all pearly white. The further you go inside, the bird's nest on the rock wall begins to be pearly yellow and orange (yellow swallow), and then you reach the deepest and most sultry cave belly before you see the orange-red bird's nest. Note that it is not bright red, but orange red or gray red. Now the bright red blood swallows on the market are all smoked. Natural blood swallows are not so bright red, and they are reddish brown when dried, and they also have the unique smell of Jin Siyan (there are hundreds of thousands of caves producing bird's nest, and only a few caves in Sabah have blood swallows). Blood swallows are mainly produced in Luolanyan Mountain, Kangshi Mountain and Songkhla Mountain in Thailand. Nutritional value blood swallow is the top grade with maroon intact, and its iron, minerals and other nutrients are the most abundant. The longer the blood swallow is stored, the deeper its maroon will become. Blood swallow has good nutrition and dietotherapy effect, which is regarded as a treasure by doctors. Because of its low output, the price of blood swallow is higher than that of Gong Yan. The main nutritional values of Xueyan are: nourishing yin, moistening lung, tonifying deficiency, beauty beauty, regulating disorder of viscera and meridians, relieving stress, supplementing physical strength and so on. These have a big premise, that is, to take them for a long time. Let's take a look at the special effects of blood bird's nest. It is rich in active glycoprotein, calcium, iron, phosphorus, iodine, vitamins and other natural nutrients and minerals, which are easily absorbed by the human body. It is indeed a very precious natural tonic, which has the functions of nourishing yin and tonifying kidney, clearing heat and invigorating spleen, moistening lung and caring skin and prolonging life. Because of its cold and dry characteristics, it is a fine product for men, women and children, suitable for all seasons. Efficacy A, therapeutic effect on respiratory diseases B, cardiotonic and hypotensive effects C, antioxidant and antiaging D, the best product of maternal health care E, anti-aging, improving blood circulation F, enriching blood and promoting blood circulation, removing blood stasis and promoting tissue regeneration G, angina pectoris, chest tightness and shortness of breath caused by hypertension and cerebrovascular occlusion have good preventive and therapeutic effects. H, other effects: strengthening the waist and strengthening the kidney, treating soreness of the waist and joints of limbs, rheumatoid arthritis, hand and foot paralysis and floaters. I, in addition to fatigue caused by stress, enhance memory. J, strengthen the body's resistance, prevent colds, and treat weakness, phlegm and cough. K, has certain curative effect on hepatitis B and liver cirrhosis. The nitrate of fake blood swallows seriously exceeded the standard by 20 1 1 in August, 2008. The Zhejiang Provincial Administration for Industry and Commerce revealed that the relevant departments found that the proportion of problem blood swallows was as high as 90%, including major brands such as "Eagle Brand" and "House of Swallows". Among these blood swallows, the content of toxic substance nitrite is the highest, which exceeds the limit standard by 350 times. It is reported that most of these problems come from Malaysia. After analyzing its raw materials, it is not difficult to find that the blood swallow is fumigated with glue, additives and bird droppings. Industry experts pointed out that such "poisonous blood swallow" will cause great harm to human health and even cause serious diseases such as gastric cancer and esophageal cancer. The source and essence of these problems have been exposed by people in the industry before. For example, Cai Zhiyong, deputy minister of agriculture and agro-based industries in Malaysia, once said that "there is no blood bird's nest in the market at all", and most of the so-called blood swallows sold by those merchants are "dyed with pigments". In addition, Ma Xingsong, chairman of the Malaysian Bird's Nest Merchants Association, also expressed the same view. He also pointed out that the reason why problem blood swallows are repeatedly banned in the market is caused by merchants chasing profiteering. In the past two months, the industrial and commercial authorities in Zhejiang Province have carried out a special inventory of blood swallow products in the bird's nest market, * * * sampling 49 blood swallow dealers and 537 batches of blood swallow. The results showed that the nitrite content in blood swallows seriously exceeded the standard. Black-hearted bird's nest is endangering national health. On August 15, Zhejiang Provincial Administration for Industry and Commerce announced the results of this law enforcement inspection: the number of blood swallows involved in retail stores in the province reached 200,000 grams, about 30,000, with an average nitrite content of 4,400 mg/kg and the highest nitrite content of 1 1000 mg/kg. Zheng Yumin, director of Zhejiang Administration for Industry and Commerce, said that these "artificial blood swallows" containing extremely high nitrite will do harm to human body after being eaten. Excessive intake will cause poisoning and even death, and long-term intake will increase the risk of cancer. Relevant law enforcement officials said that the "problem blood swallow" of this sampling inspection mainly originated from Malaysia. What is a blood swallow? Jin Siyan vomited blood, which is worth a thousand dollars. In the rivers and lakes of advanced nutrition, expensive blood swallows have always been accompanied by such beautiful legends. According to preliminary statistics, this sampling involves the problem of blood swallows in retail stores in Zhejiang Province. Among them, the highest nitrite content detected in 1 1 batch of blood swallow products such as Yinghuang brand blood swallow from Guangdong Yinghuang Ginseng Products Co., Ltd., Yanzhiwu brand blood swallow from Xiamen Sinong Food Co., Ltd., Zhengji brand blood swallow from Guangzhou Tongkang Pharmaceutical Co., Ltd. and Qinghetang brand from Beijing Qinghetang Ginseng Products Co., Ltd. According to Zheng Yumin, there are no blood swallows in the swallow-attracting room, and the so-called artificial blood swallows are inevitably related to the serious excess of nitrite detected by them. The national mandatory standard "National Standard for Food Safety-Standard for the Use of Food Additives" (GB2760-20 1 1) strictly restricts the addition of nitrite, and only the products such as cured bacon are allowed to have trace residues, with a limit of 30 mg/kg, and the maximum residue of smoked ham should not exceed 70 mg/kg. According to the limited standard, the highest nitrite content in the problem bird's nest in this sampling has exceeded 350 times. The large-scale investigation and punishment of fake blood swallows in Zhejiang Province was also resisted by counterfeiters. On July 26th, an association held an "official press conference in Malaysia" in Hangzhou. Two people who claimed to be from Malaysia Endangered Species Import and Export Administration and other institutions made a so-called "clarification" on the problem of nitrite exceeding the standard in Xueyan. It was verified that the identities of the two Malaysian officials were suspected of fraud. In this regard, Zheng Yumin said that they are not trying to dispel rumors, but to spread rumors. The identity of its officials is suspected of fraud, and none of the 35 items in the blood swallow inspection report issued by them involves nitrite content. Zheng Yumin stressed: "As long as blood swallows are exported to China for sale, they must abide by the mandatory basic food safety standards, and the content of toxic substances should be below China's national standards." Zheng Yumin said that bird's nest introduction is a big industry in Malaysia, with an annual output of 20 billion yuan and more than 50,000 bird's nest introduction houses, 95% of which are sold to China. "Therefore, when there is trouble in the China market, they are anxious, especially some stakeholders are anxious, and when they are anxious, they will make a fool of themselves." Experts said that fake blood swallows are not only sold in Zhejiang. Reporter/KLOC-learned from the State Administration for Industry and Commerce on 0/6 that the State Administration for Industry and Commerce has informed all localities to concentrate time and law enforcement forces and increase the inspection, inspection and investigation of the bird's nest market; For the bird's nest found not meeting the food safety standards, all operators shall be ordered to stop selling, take it off the shelves and withdraw from the market, investigate and deal with it according to law, and resolutely destroy the destroyed bird's nest to prevent it from flowing into the market again.