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Yeast culture and preparation method thereof

A yeast culture, yeast technology, applied in the direction of animal feed, animal feed, application, etc., to achieve the effect of promoting development, simple and stable process, and low price

Active Publication Date: 2012-12-19
JIANGSU GOSIGN BIO FEED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing technology has the disadvantages of complex preparation process, expensive raw materials and high cost, which greatly hinders the wide use of yeast culture products and affects the new development of feed breeding industry. develop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: A yeast culture, using distiller's grains as the base material, through high-density fermentation of yeast cells to obtain yeast high-density fermented distiller's grains, and adjust the pH value of yeast high-density fermented distiller's grains, then add yeast self-solvent to mix and add water to adjust the humidity , then insulated and cultivated, and finally dried to make a yeast culture of a conventional shape; the amino nitrogen content of the prepared yeast culture is 0.3-1.2%.

Embodiment 2

[0043] Example 2: The difference from Example 1 is that the selected value range of the amino nitrogen content of the yeast culture is 0.5-1%.

Embodiment 3

[0044] Example 3: A preparation method of yeast culture. The amino nitrogen content of the yeast culture made from distiller's grains is 0.3-1.2%, and in this embodiment it is 0.7-0.9%. The specific preparation steps are as follows:

[0045] A. Preparation of yeast high-density fermented distiller's grains:

[0046] 1) Weighing distiller's grains: take 1250 kg of fresh distiller's grains, measure its water content to 20%, and calculate the weight of dry distiller's grains to be 1000 kg; distiller's grains can also be fresh distiller's grains or fresh distiller's grains from fresh distiller's grains and distiller's grains from fresh Daqu. mixed distiller's grains;

[0047] 2) The enzyme preparation for fermentation of distiller's grains is determined according to the range of 0.1% to 5% of the weight of dry distiller's grains. In this embodiment, the amount of 4% is selected, that is, 40 kg, and added to fresh distiller's grains, and then mixed evenly to obtain a culture medi...

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Abstract

The invention relates to a yeast culture and a preparation method thereof. The preparation method comprises the following steps: carrying out high-density fermentation on white spirit lees used as a base material through yeast strains to obtain yeast high-density fermented white spirit lees, and regulating the pH value of the yeast high-density fermented white spirit lees; adding a yeast autolysis agent for mixing, and adding water for regulating the humidity; then, carrying out heat-insulating cultivation; and finally, drying to obtain the yeast culture with a conventional shape, wherein thecontent of amino nitrogen in the yeast culture is 0.3-1.2%. In the invention, the yeast culture prepared by using the white spirit lees as the base material has the advantages of high amino nitrogen content, low price and wide application range, enables waste materials to be used as resources, and belongs to an energy-saving and environment-friendly advanced industrial feed product. The preparation method of the yeast culture of the invention has the advantages of simple and stable processes, easy operation and control and low cost and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a yeast culture and a preparation method thereof, in particular to a yeast culture based on distiller's grains and a preparation method thereof, and belongs to the technical field of yeast cell solid-state fermentation. Background technique [0002] In recent years, products such as yeast cultures have been paid more and more attention by the breeding industry at home and abroad. A large number of studies have shown that under the same nutritional conditions and feed levels, adding an appropriate amount of yeast culture to the feed can effectively promote the increase of the total microbial count in the rumen of dairy cows, especially the growth of cellulolytic bacteria and lactic acid utilization bacteria in the rumen. Concentration, in order to speed up the fiber digestion rate and promote the pH stability in the rumen, improve the conversion of feed and the feed intake of dairy cows, improve the ratio of volatile fatty acid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/00
Inventor 梁运祥张轩赵述淼王赟周瑜璇徐倩
Owner JIANGSU GOSIGN BIO FEED
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