[Fubon College·Yeast Class] Screening of Yeast Species and Liquid Pure Culture
Yeast strain is one of the important production raw materials for yeast source biological feed. Its collection, breeding and liquid pure culture have a very important impact on the quality and function of yeast source biological feed.
As a leading company in the domestic yeast industry, Anqi has carried out research for many years in the breeding and cultivation of yeast strains and has achieved outstanding results. This article will share the results of Anqi's research on yeast species from the four aspects of strain collection, breeding, strain collection and liquid pure culture, to help you better understand the yeast source biological feed.
Source of the strain:
(1) The company its own breeding strains;
(2) collecting natural strains in the wild;
(3) Cooperate with scientific research units to breed strains.
Each year, Anqi collects 200-300 strains (about 30-40 strains of animal-specific strains) through the above channels, and screens the dominant strains.
Breeding of strains:
The selection of yeast strains uses high-quality sugar sources. Under closed and sterile conditions, after repeated screening and careful cultivation, the company's R&D engineers are treated like babies in the superior environment provided by digital production equipment. Carefully cultivate the yeast to make each cell grow rich and full.
Breeding high-quality yeast species through the CNAS laboratory accreditation platform
Yeast strain breeding
Strain library:
According to the function and research and development direction, Anqi has divided the yeast strains into more than 20 strains for storage, including yeast strains for fermenting pasta, wine and animal feed.
The animal-specific strain library, including special yeast strains suitable for different animals and having specific effects against diarrhea, provides users with high-quality organic selenium source high-selenium methionine content, providing users with new functional proteins. Yeast species of raw materials, etc. And according to the various needs of users, we can provide products that can enhance the value of feed for users.
At present, there are more than 1000 yeast strains preserved in Anqi's strain bank, which provides a source of dominant bacteria for product development and production.
Liquid nitrogen preservation of yeast species
Pure liquid culture:
Angel Yeast source of biological feed from liquid pure culture technology
(1) Nutrients required for pure culture of yeast
1 Nitrogen source: The nitrogen source available for yeast is ammonia, ammonium salt, urea, and amino acid.
2 carbon source: the main source of carbon source is sugar raw materials, such as molasses, brown sugar, etc., molasses is a relatively high quality and commonly used carbon source raw materials.
3 inorganic ions and trace elements.
(2) Main raw materials - pretreatment of molasses
Molasses is the crystallization mother liquor of the sugar factory, a dark brown viscous liquid. There are two kinds of sugar cane molasses and beet molasses. In addition to the main component of sucrose in molasses, molasses also contains inorganic salts, non-fermentable sugars and organic non-sugars.
Molasses contain pigments, pectins, soils in sugar cane, and various harmful substances brought in during the treatment process, which need to be comprehensively treated to provide fermentation. The main processes of pre-treatment of molasses include ventilation, heating, sedimentation, separation, flash cooling and the like.
(3) Advantages of pure liquid culture
1 low cost and high efficiency;
2 high purity, fast growth;
3 reduce pollution: due to the rapid growth rate of inoculated yeast, its growth rate exceeds the rate of growth of bacteria, can ensure the quality of yeast products.
In Anqi, with the selection and application of a series of yeasts with specific functions such as high temperature resistance and anti-diarrhea, it will help reduce the dependence on traditional protein materials and the amount of antibiotics in aquaculture production, and promote the animal husbandry industry. Sustainable development.
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