Liu Changting: let microbes come back from space to common people’s table

In the future, we can not only drink space beer and eat space yogurt, but also use space probiotics to produce cosmetics, antibacterial lotion and other daily necessities, and use space microbial breeding technology to develop drugs, health products, biological feed, and various new materials < / P > < p > “let’s have a taste. This is space beer and space yogurt brewed by microbes from space. What’s the difference between them?” Recently, at a gathering among friends, Liu Changting, a Chinese space microbiologist and professor of the General Hospital of the Chinese people’s Liberation Army, excitedly invited everyone to taste the delicious food transformed by space technology. “I have studied space microbes all my life, and my greatest wish after retirement is to apply the research results of space microbes to the daily life of the people and go to the dining tables of thousands of families,” he said As the “king of the earth”, microorganisms have existed on the earth for 3.5 billion years. They are the largest group of organisms on the earth. They widely exist in the air, water, soil and other ecosystems, and play an important role in the biosphere and the earth’s material cycle. In nature, microorganisms participate in the element cycle and promote material transformation, which is closely related to human beings. The normal microbial flora on the surface and inside of human body is beneficial to human health, while infectious diseases caused by various pathogenic microorganisms are the most common and frequent diseases of human beings. With the continuous development of space technology, space has become a new space for human activities. Originally only living on the earth, microorganisms also went to space with human beings. At the space station peace, for example, 234 species of microbes have been detected. According to Liu Changting, there are two ways for microbes to enter space, one of which is carried by astronauts. Generally speaking, healthy people carry at least one billion microorganisms, which exist in the skin, mouth, nasopharynx, gastrointestinal tract and other parts of the human body. These microorganisms will enter space with the astronauts. < / P > < p > another way is carried by various kinds of space equipment. Although all kinds of space equipment and equipment, such as manned spacecraft, spacesuits, and shipping products, are subject to very strict vacuum disinfection before they enter space, due to the fact that the microorganisms are too small, there will always be “fish that leak through the net” to be carried into space together. The special environment in space, such as strong radiation, microgravity, weak magnetic field, high vacuum, extreme temperature difference and particle radiation, will inevitably induce gene mutation of microorganisms from the earth, and then affect the biological characteristics and functions of microorganisms. Mutated microorganisms not only pose a potential threat to the health of astronauts, but also form microbial corrosion in a closed environment, which affects the normal operation of various precision Aerospace instruments. < / P > < p > “studies at home and abroad have shown that the extremely special environment in space can accelerate the changes of microbial variation, virulence and drug resistance. In the space environment, the immunity of human body is decreased, but the virulence of pathogenic bacteria is enhanced. Therefore, once the astronauts are infected, the treatment will be more difficult. In the international space station, there have been many cases of astronauts respiratory tract, skin, conjunctiva and other infections Liu Changting said. In order to ensure the healthy development of spaceflight, space microbiology is in the ascendant. The original intention of scientists is to solve the problem of microbial infection in space activities. However, with the deepening of research, how to use space resources to carry out microbial research and serve human beings on earth has become the main content of space microbiology. According to Liu Changting, at present, space microbiology research mainly includes three categories: first, pathogenic microorganisms, including prevention and control of astronauts’ space infection and ground refractory infection; second, corrosive microorganisms, including anti-corrosion research of space station equipment and development of new antibacterial materials; third, industrial microorganisms, including space microbial pharmaceutical industry and space industry Mutation breeding of microorganism. According to the plan, China will build a space station around 2022. At that time, there will be astronauts stationed for a long time, which is of great significance for the in-depth study of space microbiology in China. As early as 1997, Liu Changting led his team to carry out space biomedical research, and successively completed the microbial loading tasks of Shenzhou 8, 9, 10, 11, Tiangong-1 and tiangong-2 space laboratory, and carried out many pioneering researches. For example, he led the research team to carry recombinant artificial interferon (IFN) α 1b strain on China Shenzhou 8, and obtained 5 strains of high-yield bacteria, the highest yield of which can be increased by 3 times. After 50 generations of transmission, it is still stable. The results showed that the production of enzymolytic bacteria on board Shenzhou 10 spacecraft increased by 3.5 times and had good stability. Its metabolites could be used for industrial production of recombinant protein, with high specificity, efficiency and stability. On the basis of a lot of scientific research, Liu Changting also put forward the theory of “molecular effect of space microorganism”. There are three theories in this theory: space microbial virulence mutation and human mutualism theory; space microbial mutation and metabolism related space pharmaceutical theory; space microbial corrosion and decontamination material technology theory. He proposed three application directions of space microbiology in China: protection of astronauts and human health and treatment of infectious diseases; research and development of drugs and functional food; and extension of spacecraft operation time. Up to now, he has led his team to obtain 23 national patents, 7 utility model and design patents in the field of space microbiology, and established the only space microbiology data center in the world. It is Liu Changting’s unremitting pursuit to make space microbes benefit mankind. He led the team to cooperate with Beijing fulaton space biology research institute. Through screening and breeding of space yeasts, he successfully obtained a number of mutant strains with excellent performance, which can ferment at high temperature and low temperature, and can be used in beer, wine and fruit wine brewing industry. Among them, a kind of wine fermentation yeast which can make beer has been put into production. This is the “space beer” Liu Changting brought to you at the Party of friends. In the beer unique refreshing, contains the lilac fragrance, as expected is different. According to the introduction, “space beer” produced by “space beer yeast” is currently in the early stage of industrial production, and is expected to be on the table of ordinary people soon. In addition, for a single pure yogurt starter, the company has also successfully screened out “Lactobacillus reuteri in space” and is preparing for industrialization. Liu Changting also promoted the transformation and industrialization of a series of space microbiology research achievements. For example, the use of efficient composite microbial technology, inorganic plate ceramic membrane microfiltration plus activated carbon technology, greatly improve the bacterial removal rate of drinking water, provide protection for the astronauts’ drinking water and domestic water. This advanced water purification technology can directly purify astronauts’ bath water and domestic water into drinking water standards. Through the efficient composite microbial technology, the astronaut’s urine and feces are purified, so that the astronauts can live and work normally in the limited space of the aircraft. < / P > < p > “space microbial technology is widely used. In the future, we can not only drink space beer and eat space yogurt, but also use space probiotics to produce cosmetics, antibacterial lotion and other daily necessities, and use space microbial breeding technology to develop drugs, health products, biological feed, and various new materials. I would like to do my best for the early arrival of this day. ” Liu Changting said. < p > < p > < p > becoming a popular person ﹣ armless guy opens an online shop with his feet, & quot; big brother back Basket & quot; builds seven big rooms, and a signed singer becomes a cowherd sister= target=_ blank>Xiaomi new machine real machine exposure center dig hole screen design or high color thousand yuan machine

Author: zmhuaxia