Preparation method of fermented feed rich in probiotics

Abstract

The invention discloses a probiotics-enriched fermented feed and a production method thereof. The product is made from corn gluten meal, bran and bean cake as raw materials by high-concentration mash fermentation using Bacillus natto as fermentation strain. The optimization of production condition and process flow is based on the index of protein content of fermentation broth. The invention has the advantages that: the invention realizes the application of high-concentration mash fermentation technique to feed production, efficiently overcomes the problems of solid-state fermentation and liquid-state fermentation, realizes the accurate control of process conditions during the fermentation process, ensures the complete fermentation, and increases probiotics content and viable bacteria count as compared with solid-state fermentation; the production method greatly increases the yield of target products and the utilization rate of production equipment, as compared with solid-state fermentation even high-concentration mash fermentation; and the invention reduces the discharge of water waste and energy consumption, thereby protecting the environment.

Description

technical field [0001] The invention relates to a preparation method of fermented feed rich in probiotics. Background technique [0002] The annual output of my country's feed industry ranks second in the world after the United States, and its output value ranks 20th among the 41 major industries of my country's national economy. It is one of the basic industries of the national economy. Nevertheless, the existing domestic feed industry level and product quality still cannot keep up with the rapid development of the aquaculture industry. According to expert estimates, at present, my country's feed industry is short of 10 million tons of protein feed and 30 million tons of energy feed. New protein sources must therefore be extensively developed. my country's plant protein resources are abundant and cheap, and it is the best choice to solve the problem of insufficient animal feed protein sources. The specific problems that need to be solved urgently are one is to make full u...

AI Technical Summary

Problems solved by technology

However, the raw material has not been effectively used for a long time due to the low quality of direct use, and even many places discard it as waste, which constitutes a waste of resources and also causes environmental pollution.

This status quo must be changed as soon as possible, but so far there is no good solution

[0003] In addition, compared with the alcohol industry, my country's existing fermented feed production technology is still very backward

As we all know, due to the large investment in liquid fermentation process equipment, the production cost, especially the high energy consumption, and the environmental pollution caused by it is not easy to solve, so most of the domestic fermented feed adopts solid-state fermentation method

Although solid-state fermentation has the advantages of simple process and low cost, it also has the following disadvantages: firstly, it occupies a large area and the output per unit processing area is small, so its production capacity is limited; secondly, during solid-state fermentation, if raw materials If the layer is too thick, it will not only affect ventilation and heat dissipation, but also cause process conditions such as PH value, temperature, substrate water content, and bacterial growth to be out of control. It will also cause quality problems such as burning material and ammonia odor due to uneven mass transfer. This phenomenon is often impossible to prevent with the addition of stirring equipment

Third, the labor intensity is high. In recent years, domestic labor costs have been rising continuously, which will also lead to an increase in product costs.

Thick mash fermentation is a high-intensity fermentation method, which has the advantages of high equipment utilization rate, low energy consumption, and low production cost. However, its domestic application is still limited to the alcohol fermentation industry, and it is used for the processing of fermented feed Application not yet reported

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