Yeast-derived bio-feeds are a series of yeast-related natural, safe feed and feed additive products with specific nutrients or functions obtained by using yeast as a biological feed or carrier, using modern biotechnology and combined with microbial fermentation. It mainly includes high-activity dry yeast for feeding, yeast cell wall, yeast hydrolysate and trace element yeast (such as yeast selenium). As a kind of natural green biological feed, it has good application prospects in stabilizing feed quality, improving animal digestive health, strengthening animal immunity, reducing animal stress, improving animal growth performance, etc., and is widely used in livestock and poultry. Animal husbandry, aquatic products, ruminants, special breeding, etc.
As early as 2300 BC, humans began to make bread from the "old leaven" containing yeast. In 1680, A.van Levinhog used a microscope to find yeast cells from a drop of beer. Soon, humans began to consciously use yeast (beer yeast) to make faces. The importance of yeast has gradually caught the attention of industry. Shortly after the outbreak of the First World War, Germany began to study the use of modern methods to produce yeast to solve the problem of food shortage and high production costs. The outbreak of the Second World War objectively promoted the development of yeast production. Due to the high water content of the pressed yeast, it is easy to be corrupted, and the transportation of the refrigerated truck is required, which cannot meet the requirements of the special environment during wartime, resulting in large-scale production of active dry yeast. In 1945, some military agencies and factories in the United States and Europe produced more than 4 million pounds of active dry yeast for urgent needs in wartime.
Yeast as a feed product has been researched and developed very early in foreign countries. In 1910, Germany M. Delbrück first used yeast sludge in beer production as a supplementary feed and named it as feed yeast. In 1967, at the first International Single Cell Protein Conference in the United States, it was decided that all proteins produced by single-celled microorganisms are collectively referred to as single-cell proteins. The former Soviet Union was a large producer of yeast protein. In 1982, the Soviet Union’s single-cell protein production reached 1.1 million tons, and the number of production plants reached 86. In addition, Brazil, Japan, causality, Germany, the Czech Republic, Bulgaria and other countries have used various raw materials. Fermentative yeast produces single cell proteins. Developed countries such as Europe and the United States have begun to actively use yeast-derived biological feed products in animal feed, especially some newly developed products, such as active yeast, yeast cell wall polysaccharide, yeast selenium, etc., which have achieved good application in the international market. Apply the effect and have a tendency to gradually expand the scope of application.
In China, yeast production started late, starting in the 1920s and still less than a hundred years old. In the 1950s, China's yeast production had a great development, dozens of production plants were established, and an independent industrial system was formed. In the 1970s, China concentrated on the development of feed yeast, but it was interrupted due to technical constraints, limited resources and high costs. Until the 1980s, domestic companies such as Angel Yeast were put into production, and they accumulated a lot of valuable experience in the production of feed yeast using alcohol, beer by-products, and molasses. Only then did they gradually produce on a large scale, and industrialized production of yeast reached an international level. In the past 10 years, with the concept of green healthy feed deeply rooted in the hearts of the people, yeast has gradually gained market recognition as a non-toxic, residue-free and drug-free feed additive (feed material). Feed yeast plays a role in animal nutrition development. The more important the role.
At present, Chinese enterprises have made great progress in the research and production of yeast-derived biological feed. In the process of continuous development of Chinese yeast, some well-known yeast brands and yeast production enterprises have emerged to promote the Chinese national yeast industry. Great efforts have been made to develop and improve the quality of life of the people. Among them, the development of Angel Yeast is particularly rapid. Since its establishment in 1986, Angel Yeast has a comprehensive production capacity of 165,000 tons. The active dry yeast, yeast extract, zymosan and yeast selenium have the highest production capacity in the world. In more than 140 countries and regions, the subsidiary of Angel Yeast has already gone abroad, the Egyptian factory has been put into production, and the Russian project has already started. Angel Yeast has become one of the three major yeast giants with global influence. Since the company first introduced the concept of “yeast source biological feed†in 2000, its company has developed into the leading influence brand of R&D, production and application in China. The development of the source biological feed industry.
Along with the state's conscious development of the benign development of yeast-derived bio-feeds, in April 2010, the Ministry of Agriculture held a seminar on “Support Program for SMEsâ€, once again confirming the support for yeast micro-ecological products is thirty. The year remains unchanged. Subsequently, the Ministry of Agriculture of the People's Republic of China (No. 2038) announced that four varieties of Saccharomyces cerevisiae culture, Saccharomyces cerevisiae extract, yeast hydrolysate and Saccharomyces cerevisiae cell wall were added to the Feed Material List. On the other hand, some domestic yeast manufacturers are limited by the scale and technology, the product quality is uneven, and the use effect is also unstable, which affects the application and promotion of yeast source biological feed to a certain extent. Therefore, China urgently needs to develop high-quality and low-priced brand products, relying on enterprises with independent research and development capabilities and national scientific research institutions and related departments to invest heavily in the systematic research and application of yeast products, and to develop quality standards for related products. Enterprises are strictly required to carry out quality control on the products, and the competent departments of the industry strengthen supervision and prevent non-standard products from entering the circulation link. The implementation of this series of measures can effectively protect the healthy and rapid development of the industry.
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