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Saccharomyces cerevisiae fermented high-protein corn straw feed and preparation method thereof

A technology of corn stalks and Saccharomyces cerevisiae, which is applied in animal feed, animal feed, application and other directions, can solve problems such as affecting the health and production performance of livestock and poultry, chronic poisoning of livestock and poultry, and increasing the cost of feed, etc. The effect of short cycle and few strains

Inactive Publication Date: 2014-06-25
NORTHEAST AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are corn steep liquor dry powder and sprayed feed in the domestic market. Making corn steep liquor into dry powder feed not only increases the feed cost, but also causes a great loss of nutrition during the drying process. Corn steep liquor is obtained by soaking corn kernels in sulfurous acid solution. Corn steep liquor Containing 0.2%-0.35% sulfurous acid, long-term feeding of livestock and poultry often causes chronic poisoning of livestock and poultry due to the accumulation of sulfite, which directly affects the health and production performance of livestock and poultry. Therefore, the application of corn spray feed is greatly affected. limits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Strain selection: Saccharomyces cerevisiae;

[0030] Preparation of corn steep liquor nutrient additive: add calcium hydroxide to corn steep liquor, adjust pH to 4.5, calcium hydroxide dosage per 1.5g / 100g corn steep liquor, stir for 15 minutes, let stand for more than 30 minutes, brew yeast liquid by mass 1: Add 10 proportions to corn steep liquor and stir (the content of Saccharomyces cerevisiae in corn steep liquor is greater than 10 6 CFU / g), placed at room temperature for at least 24 hours, stirring once every 3 hours;

[0031] Corn stalks collection: use corn stalks placed in storage;

[0032] Preparation of fermented feed: Cut the corn stalks to 3-5cm, the calculation of the proportion of corn steep liquor is based on the total mass of corn steep liquor and straw, add 20% corn steep liquor, the protein content of the finished product is ≥8%, according to the required To achieve the target protein content of fermented feed, the proportion of corn steep liquor ad...

Embodiment 2

[0036] Strain selection: Saccharomyces cerevisiae;

[0037] Preparation of corn steep liquor nutrient additive: add calcium hydroxide to corn steep liquor, adjust pH to 4.7, calcium hydroxide dosage per 1.6g / 100g corn steep liquor, stir for 15 minutes, let stand for more than 30 minutes, brew yeast liquid by mass 1: Add 10 proportions to corn steep liquor and stir (the content of Saccharomyces cerevisiae in corn steep liquor is greater than 10 6 CFU / g), placed at room temperature for at least 48 hours, stirring once every 3 hours;

[0038] Corn stalk collection: corn stalks can be collected before snowfall, or placed in storage after collection to prevent mold and deterioration;

[0039] Preparation of fermented feed: Cut the corn stalks to 3-5cm, the calculation of the addition ratio of corn steep liquor is calculated according to the total mass of corn steep liquor and corn steep liquor, add 25% corn steep liquor, the protein content of the finished product is ≥12%, accordi...

Embodiment 3

[0043] Strain selection: Saccharomyces cerevisiae;

[0044] Preparation of corn steep liquor nutritional additives: add calcium hydroxide to corn steep liquor, adjust the pH to 4.8, the amount of calcium hydroxide per 2g / 100g corn steep liquor, stir for 15 minutes, let it stand for more than 30 minutes, and mix the Saccharomyces cerevisiae liquid by mass 1:10 Add the ratio to corn steep liquor and stir (the content of Saccharomyces cerevisiae in corn steep liquor is greater than 10 6 CFU / g), placed at room temperature for at least 72 hours, stirring once every 3 hours;

[0045] Corn stalk collection: corn stalks can be collected before snowfall, or placed in storage after collection to prevent mold and deterioration;

[0046] Preparation of fermented feed: Cut the corn stalks to 3-5cm, the calculation of the proportion of corn steep liquor is based on the total mass of corn steep liquor and straw, add 30% corn steep liquor, the protein content of the finished product is ≥13%,...

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Abstract

The invention discloses a saccharomyces cerevisiae fermented high-protein corn straw feed and a preparation method thereof. The feed is obtained by performing desulfurization treatment on corn steep liquor by saccharomyces cerevisiae, dissolving a proper proportion of desulfurized corn steep liquor into water, uniformly spraying the mixture to chopped corn straws, uniformly stirring the desulfurized corn steep liquor and the chopped corn straws and pressing and fermenting the desulfurized corn steep liquor. According to the method, sulfite in the desulfurized corn steep liquor is converted into inorganic sulfur by the saccharomyces cerevisiae, so that the sulfite content is reduced to below 30 percent; the potential threat of the corn steep liquor serving as a fermented feed nutritious additive to the health of livestock is eliminated; and moreover, the corn straw fermented feed produced by the method is high in nutrition value; the number of required strains is small; the operation is easy; the cost is low; the production period is short; and the feed application range is wide.

Description

technical field [0001] The invention relates to a high-protein corn straw feed fermented by Saccharomyces cerevisiae and a preparation method thereof, belonging to the technical field of fermented feed. Background technique [0002] Corn stalk is one of the main food crops and economic by-products. It is an unconventional and non-competitive feed resource with many sources, large quantity, low price and great potential for development and utilization. [0003] The development and utilization of corn stalk feed has become one of the current development trends of the feed industry. At present, corn stalk processing methods include physical methods, chemical methods and microbial methods. Physical treatment (cutting short, crushing and soaking) can change the palatability of straw feed, but can not improve the nutritional value of straw; chemical treatment (alkalinization, ammoniation and oxidation) can improve the nutritional value of straw to a certain extent, but has no effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/00A23K1/14A23K1/175
CPCY02P60/87
Inventor 许丽李红宇金慧然
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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