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Potato slag comprehensive utilization processing method for combined production of starch and meal fiber

A technology of potato residue and dietary fiber, applied in the field of joint production of starch and dietary fiber, can solve problems such as increasing pollution sources, save water consumption, realize microcrystallization, good physical properties and physiological activity.

Inactive Publication Date: 2015-02-11
CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reported methods for preparing dietary fiber products from potato residues mainly use acid or enzyme treatment to hydrolyze the starch and protein in the residues and discharge them into waste water, and recover the remaining solids to obtain insoluble dietary fiber products. The valuable components in the slag are fully utilized, and a large amount of acidic organic wastewater is produced, which increases a new source of pollution

Method used

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  • Potato slag comprehensive utilization processing method for combined production of starch and meal fiber
  • Potato slag comprehensive utilization processing method for combined production of starch and meal fiber
  • Potato slag comprehensive utilization processing method for combined production of starch and meal fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) In the mixing tank, 50kg of potato residues are mixed with water evenly, the mass ratio of water and raw materials is 3: 1, and the resulting feed liquid is pumped into a filter and a cyclone desander to remove impurities such as sand grains;

[0024] (2) Treat the feed liquid with a colloid mill for 2 minutes after removing impurities to obtain a homogeneous feed liquid;

[0025] (3) Adjusting the pH of the homogeneous feed solution to 4.5, adding a mixture consisting of cellulase, pectinase, acid protease, xylanase, and mannanase in a mass ratio of 5:2:1:1:1 Compound enzyme, the enzyme concentration is 2g / L, carry out enzymatic conversion at 45 ℃ for 1h, filter through a filter press, and obtain the filtrate after enzymolysis and the filter cake after enzymolysis respectively (that is, filter residue, obtained after filtering by a filter press) Filter residue can also be referred to as filter cake, the same below).

[0026] (4) The filtrate after the enzymolysis ...

Embodiment 2

[0030] (1) In the mixing tank, 25kg of potato residues are mixed with water evenly, the mass ratio of water and raw materials is 4: 1, and the resulting feed liquid is pumped into a filter and a cyclone desander to remove impurities such as sand grains;

[0031] (2) Treat the feed liquid with a colloid mill for 2 minutes after removing impurities to obtain a homogeneous feed liquid;

[0032] (3) Adjust the pH of the homogeneous feed solution to 4.5, add cellulase, pectinase, acid protease, xylanase, and mannanase in a mass ratio of 8:3:1:2:2 The complex enzyme, the enzyme concentration is 0.5g / L, the enzymatic conversion is carried out at 50°C for 1h, and the filtrate and filter cake are respectively obtained after being filtered through a filter press;

[0033] (4) separating the filtrate obtained in step (3) through a cyclone to obtain a precipitate and a supernatant;

[0034] (5) Return 1 / 2 of the supernatant obtained in step (4) to the mixing tank of step (1), add 50L of ...

Embodiment 3

[0038] (1) In the mixing tank, 50kg of potato residues are mixed with water evenly, the mass ratio of water and raw materials is 3: 1, and the resulting feed liquid is pumped into a filter and a cyclone desander to remove impurities such as sand grains;

[0039] (2) Treat the feed liquid with a colloid mill for 2 minutes after removing impurities to obtain a homogeneous feed liquid;

[0040] (3) adjusting the pH of the homogeneous material liquid obtained in step (2) to be 4.5, adding cellulase, pectinase, acid protease, xylanase, mannanase in a mass ratio of 9:3:1:2 : the composite enzyme of 2 compositions, enzyme concentration is 1.5g / L, carries out enzymatic conversion 2h at 45 ℃, obtains filtrate and filter cake respectively after press filtration by filter press; (4) step (3) gained filtrate is passed through Cyclone separation to obtain precipitate and supernatant, the resulting precipitate was dried by a vacuum drum dryer to obtain 1.1kg of starch;

[0041] (5) Concent...

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Abstract

The invention discloses a potato slag comprehensive utilization processing method for combined production of starch and meal fiber. Mechanical crushing and enzyme degradation method are used for processing potato slag, so as to significantly improve the processing properties of materials, and effectively promote the release of target and generation of high active components. At the same time, medium recycling utilization process is utilized, so as to not only save water consumption but also simplify the subsequent concentration process, and effectively realize enrichment of target object. The obtained starch product has good transparency, swelling power and retrogradation property compared with other starch; and the obtained dietary fiber product has high proportion of soluble dietary fiber, strong sodium cholate, and especially obvious advantages in the aspects of adsorption ability of cholesterol adsorption compared with similar products, which shows that the dietary fiber product has good physical property and physiological activity. The invention has the advantages of simple operation, convenience, mild conditions, low equipment requirement, high utilization rate of raw materials, energy saving and benefit for environmental protection.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of potato starch processing by-products, and relates to a method for jointly producing starch and dietary fiber by using potato dregs as raw materials. Background technique [0002] Dietary Fiber (DF for short) refers to the sum of plant cells, polysaccharides, lignin and other substances in food that cannot be digested and absorbed by human endogenous enzymes. According to the solubility in water, it is divided into insoluble dietary fiber (Insoluble Dietary Fiber referred to as IDF) and soluble dietary fiber (Soluble Dietary Fiber referred to as SDF). Insoluble dietary fiber has the effect of preventing obesity, constipation, and colon cancer, and soluble dietary fiber can lower serum cholesterol, inhibit postprandial blood sugar, and improve intestinal flora. After more than 30 years of research and development, dietary fiber has become a widely popular health food in developed countri...

Claims

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Application Information

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IPC IPC(8): C08B30/04A23L1/308A23L33/21
Inventor 刘凌孙慧周明吴娜李国明姜忠杰
Owner CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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