Homemade Yogurt

First, I will sort out two questions that everyone will ask. 1. What is lactic acid bacteria? Lactic acid bacteria are a group of Gram-positive bacteria (without spores) that can produce large amounts of lactic acid from fermentable carbohydrates (mainly sugars). Bacteria that can produce lactic acid from the fermentation of glucose or lactose are collectively referred to as lactic acid bacteria. This is a rather complex group of bacteria, which can be divided into at least 18 genera, with a total of more than 200 species. Except for a few, most of them are the indispensable flora in the human body and have important physiological functions, which are widely present in the human intestinal tract. It has been confirmed by biologists at home and abroad that intestinal lactic acid bacteria have a very close and direct relationship with health and longevity. At the same time, lactic acid bacteria are also widely present in the intestines of livestock and poultry, many foods, materials and a few clinical samples. Lactic acid bacteria can not only improve the nutritional value of food, improve food flavor, increase food preservation and added value, but also the special physiological activity and nutritional function of lactic acid bacteria are attracting more and more attention. A large number of studies have shown that lactic acid bacteria can regulate the normal flora of the body’s gastrointestinal tract, maintain microecological balance, improve food digestibility and biological value, reduce serum cholesterol, control endotoxins, and inhibit the growth and reproduction of spoilage bacteria in the intestine and the production of spoilage products. Nutrients stimulate tissue development, thereby having an effect on the body's nutritional status, physiological functions, cell infections, drug effects, toxic reactions, immune reactions, tumorigenesis, aging processes and sudden emergency responses. It can be seen that the physiological functions of lactic acid bacteria are closely related to the life activities of the body. It can be said that if lactic acid bacteria stop growing, it will be difficult for humans and animals to survive healthy. Because of this, lactic acid bacteria are widely used in many industries such as light industry, food, medicine and feed industry [1]. Lactic acid bacteria are a kind of probiotic bacteria that exist in the human body. Lactic acid bacteria can ferment carbohydrates into lactic acid, hence the name. Probiotics can help digestion and contribute to the health of the human intestines, so they are often regarded as healthy foods and added to yogurt. Hundreds of species of bacteria live in the human intestines, the number of which exceeds one hundred billion. Among them, those beneficial to human health are called probiotics, represented by bifidobacteria and Enterococcus faecium, and those harmful to human health are called harmful bacteria, represented by Escherichia coli and Clostridium perfringens. Probiotics are a huge flora, and harmful bacteria are also not small. When probiotics dominate (more than 80% of the total), the human body remains healthy, otherwise it is in a sub-healthy or unhealthy state. Long-term scientific research results show that probiotics, represented by lactic acid bacteria, are beneficial bacteria that are indispensable to the human body and have important physiological functions. Their large and small numbers directly affect human health and life span. The length of time, the results of long-term research by scientists have proved that lactic acid bacteria are very important to human health and longevity. The number of lactic acid bacteria in the human intestine will gradually decrease as people age. When a person reaches old age or becomes sick, the number of lactic acid bacteria may decrease by 100 to 1,000 times until the elderly completely disappear at the end of life. In normal times, there are 50 times more healthy people than sick people, and 60 times more long-lived elderly people than ordinary elderly people. Therefore, the actual status of the number of lactic acid bacteria in the human body has become an important indicator of whether people are healthy and long-lived. Due to the widespread application of broad-spectrum and powerful antibiotics, the probiotics in the human intestines, mainly lactic acid bacteria, have been severely damaged, and their resistance has gradually decreased, leading to more and more diseases and a great threat to health. Therefore, it is very important to deliberately increase the number of lactic acid bacteria in the human intestinal tract. The internationally recognized lactic acid bacteria are considered to be the safest strains and the most representative intestinal probiotics. The more probiotics represented by lactic acid bacteria in the human intestines, the better. It is also fully in line with the conclusion drawn by the Nobel Prize-winning biologist Mechnikov's "Longevity Theory" that lactic acid bacteria = probiotics = longevity bacteria. Faced with the increasingly powerless status of antibiotics, human beings are constantly seeking new and more effective bio-antibacterial products. The developed countries in the world first recognized and initiated the immunotherapy revolution represented by the use of lactic acid bacteria. The results of a study published by Swedish scientists are that it is better to drink lactic acid bacteria directly than antibiotics when treating inflammation of the stomach and large intestine, and the risk is almost zero. In Japan, lactic acid bacteria products have accounted for more than 85% of the Japanese dairy market. In the past two decades, the average height of Japanese youth has increased by 15 cm, and the average life expectancy of the population has reached 85 years, ranking first in the world. These are the direct health effects brought by lactic acid bacteria products. Hundreds of species of bacteria live in the human intestines, the number of which exceeds one hundred billion. Among them, those beneficial to human health are called probiotics, represented by bifidobacteria and Enterococcus faecium, and those harmful to human health are called harmful bacteria, represented by Escherichia coli and Clostridium perfringens. Probiotics are a huge flora, and harmful bacteria are also not small. When probiotics dominate (more than 80% of the total), the human body remains healthy, otherwise it is in a sub-healthy or unhealthy state. Long-term scientific research results show that probiotics, represented by lactic acid bacteria, are beneficial bacteria that are indispensable to the human body and have important physiological functions. Their large and small numbers directly affect human health and life span. The length of time, the results of long-term research by scientists have proved that lactic acid bacteria are very important to human health and longevity. The number of lactic acid bacteria in the human intestine will gradually decrease as people age. When a person reaches old age or becomes sick, the number of lactic acid bacteria may decrease by 100 to 1,000 times until the elderly completely disappear at the end of life. In normal times, there are 50 times more healthy people than sick people, and 60 times more long-lived elderly people than ordinary elderly people. Therefore, the actual status of the number of lactic acid bacteria in the human body has become an important indicator of whether people are healthy and long-lived. Due to the widespread application of broad-spectrum and powerful antibiotics, the probiotics in the human intestines, mainly lactic acid bacteria, have been severely damaged, and their resistance has gradually decreased, leading to more and more diseases and a great threat to health. Therefore, it is very important to deliberately increase the number of lactic acid bacteria in the human intestinal tract. The internationally recognized lactic acid bacteria are considered to be the safest strains and the most representative intestinal probiotics. The more probiotics represented by lactic acid bacteria in the human intestines, the better. It is also fully in line with the conclusion drawn by the Nobel Prize-winning biologist Mechnikov's "Longevity Theory" that lactic acid bacteria = probiotics = longevity bacteria. Faced with the increasingly powerless status of antibiotics, human beings are constantly seeking new and more effective bio-antibacterial products. The developed countries in the world first recognized and initiated the immunotherapy revolution represented by the use of lactic acid bacteria. The results of a study published by Swedish scientists are that it is better to drink lactic acid bacteria directly than antibiotics when treating inflammation of the stomach and large intestine, and the risk is almost zero. In Japan, lactic acid bacteria products have accounted for more than 85% of the Japanese dairy market. In the past two decades, the average height of Japanese youth has increased by 15 cm, and the average life expectancy of the population has reached 85 years, ranking first in the world. These are the direct health effects brought by lactic acid bacteria products. The physiological functions of lactic acid bacteria: 1. Prevention and treatment of lactose intolerance (abdominal bloating, diarrhea and other symptoms that occur when drinking fresh milk) commonly suffered by some races. 2. Promote the absorption of protein, monosaccharides, calcium, magnesium and other nutrients, and produce a large number of beneficial substances such as vitamin B family. 3. Increase the beneficial intestinal flora, improve the function of the human gastrointestinal tract, restore the balance of the human intestinal flora, form an antibacterial biological barrier, and maintain human health. 4. Inhibit the reproduction of spoilage bacteria, eliminate toxins produced by spoilage bacteria, and remove intestinal garbage. 5. Inhibit cholesterol absorption, lower blood fat and blood pressure. 6. Immune regulation, enhance human immunity and resistance. 7. Anti-tumor and cancer prevention effects. 8. Improve the activity of SOD enzyme, eliminate free radicals in human body, have anti-aging, longevity effects. 9. Effectively prevent bacterial infections in the female genitourinary system. 10. Control the level of toxins in the human body, protect the liver and enhance the liver's detoxification and detoxification functions. A few are heterogeneous fermentations, such as Leuconostocmesenteroides (Leuconostocmesenteroides) is an important strain for the production of dextran (that is, plasma) in the pharmaceutical industry, but it is also a harmful bacteria in the sugar industry, which often makes the sugar juice thick and thick Unable to process. Lactobacillus family, rod-shaped bacteria, single or chain, sometimes filamentous, producing pseudo-branches. According to the different products after using glucose, it is divided into homotype fermentation group and heterotype fermentation group. Most species can ferment lactose without using lactic acid, and can lower the pH to below 6.0 after fermentation. Lactobacillus (Lactobacillus) is the most important in this family, most of which are commonly used in industry, especially in food industry. It is found in dairy products, fermented plant foods such as kimchi, sauerkraut, silage, and human intestinal tract, especially in the intestinal tract of infants. High temperature fermentation bacteria are commonly used in industrial production of lactic acid. For example, Lactobacillus delbrueckii (L. delbrueckii), the optimum growth temperature is 45 ℃, this bacteria is widely used in the manufacture of lactic acid and calcium lactate manufacturing industry. 2. Where can I buy lactic acid bacteria? Taobao"