A process for engineering fermented biomass feed

Abstract

The invention discloses a process for engineering fermentation of biomass feed and solves the problem that existing biomass feed is long i92n fermentation time. The process includes: (1), preparing to obtain powder of 20-30% in water content; (2), adopting a physical method to treat the powder to obtain a semi-finished product A; (3), adding a mixed material composed of the semi-finished product A and a compound strain A into a solid-state fermentation device for solid-state aerobic fermentation, and after viable count in a matrix of solid-state aerobic fermentation is greater than 109 per g, discharging to obtain a semi-finished product B; (4), adding the semi-finished product B, a compound strain B and sterile water into a liquid-state fermentation device for liquid-state anaerobic fermentation, and after viable count in a matrix of liquid-state anaerobic fermentation is greater than 109 per ml and pH is 4.0-5.0, fully discharging to obtain biomass fermentation feed. The process has the advantages that cost is lowered, and fermentation time is shortened.

Description

technical field [0001] The invention relates to a production process of feed, in particular to a process of engineering fermented biomass feed. Background technique [0002] Biomass feed refers to the use of animal, vegetable or microbial raw materials as feed. Generally speaking, the digestibility of feed determines the wide range of uses of feed. For general animals, the digestibility of feed is animal > microbial > Plant-based feed; however, the digestibility of animal and plant-based feed can be increased by microbial fermentation. At present, due to the rapid development of my country's animal husbandry, the requirements for feed are increasing day by day. With the rapid increase in the prices of feed raw materials such as fish meal, whey powder, meat and bone meal, corn, soybean meal, bran, and wheat worldwide, the prices of fish meal, whey powder, corn, and soybean meal have risen sharply in the past ten years More than 20%, the rapidly rising feed cost has re...

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Problems solved by technology

Second, it is also sealed in bags or stored in cellars, which consumes labor and has no solution to the problem of mildew and rot.

[0005] The current technology to shorten the fermentation time is to add enzyme preparations to the process, such as CN200710116422.5-feather products and its processing technology and use, which adopts activated H bacteria to ferment fresh blood feathers, through enzymolysis, hydrolysis treatment, and then with compound microorganisms Oxygen fermentation to produce finished products; the problems in the practical application of the above patents are mainly: although the fermentation time is shortened by using enzyme preparations, the fermented products need to be dried and crushed and the cost of adding enzyme preparations is high

[0006] At present, the relatively mature biomass feed process is as follows: pretreatment, enzymatic hydrolysis, and fermentation are completed in three steps, but the toxic substances (such as acetic acid, furfural, phenol, etc.) produced during the physical and chemical pretreatment process are serious. Inhibition of fermentation is not conducive to shortening the fermentation time, such as CN200910066018.0-protein feed rich in small peptides and multi-enzyme bacteria and its preparation method, which adopts high-pressure steam explosion to release the mixed feed in the steam explosion pot instantly, and then mix The feed is sent to the solid-state fermentation bin to cool down, inoculate and ferment for 72 hours, and bag it to obtain the finished product

The problems in the practical application of the above-mentioned patents are mainly as follows: first, the air pressure rises to 1-2 MPa, the temperature rises to 140-200°C, and the pressure is kept for 4-6 minutes, which consumes a lot of energy; Fermentation time, fermentation still needs 3 days; third, the product after solid state fermentation needs to be dried and crushed and high-pressure steam steam explosion consumes high energy costs

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