CN102599342A - Preparation method and application for potato residue feed ingredient - Google Patents

Abstract

The invention relates to a preparation method and an application for a potato residue feed ingredient and belongs to the technical field of comprehensive utilization of potato residue. The preparation method comprises the following steps of: taking the waste byproduct, namely, wet potato residue obtained after potato starch processing, as a raw material; utilizing cellulose to moderately hydrolyze potato residue; performing high-temperature thermal treatment; and cooling, thereby obtaining a feed ingredient with excellent property. The ingredient for supplying cellulose, such as bran, can be replaced by the feed ingredient which is widely applied to the feed industry. The preparation method provided by the invention is simple and easy in treating process; the problem that the potato residue is easy to rot and deteriorate and is difficult to be treated is effectively solved; the feed having an enzymolysis effect on the potato residue is added, so that the microorganism environment in an organism is improved and the healthy growth of animals is boosted; and the application value is higher.

Description

A kind of preparation method of potato dreg fodder component and application

Technical field

The present invention relates to a kind of preparation method and application of potato dreg fodder component, belong to potato residues comprehensive utilization technique field.

Background technology

Potato residues is in the farina production process, and a kind of main component of generation is the accessory substance of water, cell fragment and remaining starch granules.Bright potato slag water content is high, and it is many to carry disease germs certainly, is difficult for storing, transporting, and putrid and deteriorated back produces stench, causes environmental pollution; Then cost is too high if dry, and increases business burden, handles as feed usually or buries as waste residue, can cause soil and phreatic pollution but bury in a large number.Contain compositions capable of using such as a large amount of celluloses, pectin in the potato slag, contain partial starch and a small amount of protein simultaneously, have very high value of exploiting and utilizing.

The comprehensive utilization of potato residues at present mainly comprises solid-state or semi-solid method fermenting and producing single cell protein (SCP), extracts the dietary fiber (DF) in the potato slag, or utilizes the potato slag as nutrient source, the various organic matters of fermenting and producing.But above-mentioned application mode can't be handled the potato slag continuously fast, and the treatment process cost is higher, can't realize large-scale promotion and application.Improving cellulose through the cellulose hydrolyzation potato residues forms and quality; When going out enzyme, high-temperature process further destroys the remaining cell membrane in the potato residues; Macromolecular substances such as cellulose, pectin, starch are come out; And starch ingredients has been improved the nutritive value of potato slag by gelatinization and stripping part soluble dietary fiber and some small molecular sugars in processing procedure.In application,, significantly improve solid content, reduce energy consumption for drying and cost, can realize the quick integral comprehensive utilization of potato residues discarded object through with enzymolysis potato residues and other feed ingredient blend.

Summary of the invention:

It is simple to the purpose of this invention is to provide a kind of production operation, with low cost, can realize the method for continuous fast processing potato residues, with its component as a kind of good feed, is widely used in the feed industry then.

For realizing above-mentioned purpose, the present invention is a raw material with the fresh potato slag, with cellulase appropriateness hydrolysis potato residues, after high-temperature heat treatment, cooling, makes a kind of enzymolysis potato dreg fodder component, and its concrete production technology comprises the steps:

(1) is raw material with the potato wet slag, adds water to mass concentration 4g/100g～12g/100g;

(2) cellulase degradation is handled: regulate pH to 3.5～6.0, and 40 ℃～60 ℃ of temperature, cellulase hydrolysis is handled 40min～100min,

(3) high-temperature heat treatment: 80 ℃～95 ℃ high-temperature process 20min～40min, cool off, obtain the potato residues enzymolysis product.

The application of enzymolysis potato dreg fodder component according to the invention can be added in the feed by the proportioning of 2g/100g～20g/100g (in dry) and go.

Beneficial effect of the present invention:

1. the present invention directly handles on the basis of bright potato slag, can in time handle the accessory substance that produces in the starch industry production, not only gives potato residues starch producer considerable economic benefit, can avoid again because the problem of environmental pollution that the potato slag brings.

2. contain rich dietary fiber in the potato residues, but be mostly soluble dietary fiber, through the cellulose treatment potato residues; Make the soluble dietary fiber of its part be converted into soluble dietary fiber; Soluble dietary fiber can not be digested under one's belt, can be after getting into enteron aisle by enteron aisle in the beneficial microbe fermentation produce SCFA, reduce enteron aisle pH value; Suppress some harmful bacteria growing and produce poison, thereby improve the microecological balance of enteron aisle.In addition, can also improve the palatability of potato residues through enzymolysis, and the efficient that absorbs of the material that can have additional nutrients.

3. in this process high-temperature heat treatment process; Further destroyed the remaining cell wall structure in the potato residues; Active principles such as cellulose, pectin, starch are fully come out, improved the nutritive value of potato slag, high temperature has not only played the effect of the enzyme that goes out simultaneously; Also kill the microorganism in the potato slag, helped the storage of feed.

4. this technological process is not only simple to operate, and cost is low, but also has good popularization value, in process, has realized the integral body utilization to potato residues, does not produce secondary pollution, has also improved the effect of feed.

Specific embodiments:

Embodiment one:

The material potato slag adds water to mass concentration 5g/100g, then pH is transferred to 4.0, and cellulase adds in the screenings with dilute solution, stirring reaction 1.5 hours, 80 ℃ of high-temperature heat treatment 35min.Products obtained therefrom is a potato residues enzymolysis feed component,

Its cellulose composition is compared with the brighter potato slag of physical application performance and has been obtained tangible improvement, and the result is shown in table 1, table 2.

SDF and IDF content are relatively in bright potato slag of table 1 and the enzymolysis potato slag

Embodiment two:

Bright potato slag adds water to mass concentration 6g/100g, then pH is transferred to 4.5, and cellulase adds in the screenings with dilute solution, stirring reaction 1 hour, 85 ℃ of high-temperature heat treatment 30min.Gained potato residues enzymolysis feed component and mix with other feed ingredients by the prescription that table 3 provided and be prepared as the raising that finished product feedstuff is applied to piglet through the same terms heat treated potato residues; The result shows that the feed that adds the enzymolysis potato residues obtained effect preferably; Average daily gain is only added and has been improved 15.9% through the piglet of heat treated potato residues; The material anharmonic ratio has descended 13.6%, and the quantity of lactic acid bacteria and Bifidobacterium significantly increases, and Escherichia coli and enterococcal quantity significantly reduce; Played the effect that improves gut flora, concrete outcome is shown in table 4, table 5.

Table 3 feed formula

Table 4 animal (pig) experiment weightening finish situation

Table 5 animal (pig) gut flora situation

Annotate: the result representes with 1g.

Claims (4)

1. the preparation method of a potato dreg fodder component and application.It is characterized in that with the fresh potato slag be raw material; With cellulase appropriateness hydrolysis potato residues; High-temperature heat treatment makes a kind of enzymolysis potato dreg fodder component after the cooling, can make the good feed of a kind of effect by a certain percentage with after other feed ingredients mix.

2. potato residues according to claim 1 prepares the feed ingredient preparation method, it is characterized in that the wet potato residues of raw materials used direct accessory substance for farina processing.

3. potato residues according to claim 1 prepares the feed ingredient preparation method, it is characterized in that comprising following concrete steps:

(1) is raw material with the potato wet slag, adds water to mass concentration 4g/100g～12g/100g;

(2) cellulase degradation is handled: regulate pH to 3.5～6.0, and 40 ℃～60 ℃ of temperature, cellulase hydrolysis is handled 40min～100min,

(3) high-temperature heat treatment: 80 ℃～95 ℃ high-temperature process 20min～40min, cool off, obtain the potato residues enzymolysis product.

4. the application of enzymolysis potato dreg fodder component according to claim 1 is characterized in that addition is the 2g/100g～20g/100g in dry feed formula mass percent.