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Method for extracting dietary fiber from potato residues

A technology of potato dregs and dietary fiber, which is applied in food preparation, food science, application, etc., can solve the problems of insignificant improvement in the quality of dietary fiber products, decrease in water holding capacity and expansion force, and high processing costs, so as to reduce the pressure , The proportion of hydrophilic groups is large, and the effect of reducing production costs

Inactive Publication Date: 2010-06-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses the enzyme treatment and separation method to prepare potato residue dietary fiber, solves the problem of potato residue processing for many starch production enterprises, greatly increases the added value of the enterprise, and reduces the pressure on environmental pollution at the same time; avoids rough separation method, chemical Soaking in hot alkali and repeated rinsing with water in the separation method not only reduces the yield of dietary fiber, but also significantly reduces the water holding capacity and swelling power of the product, and does not significantly improve the quality of dietary fiber products. It also contains a small amount of protein and starch and discharges a large amount of sewage. The environment causes serious pollution, and the disadvantage of expensive treatment costs

Method used

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  • Method for extracting dietary fiber from potato residues
  • Method for extracting dietary fiber from potato residues
  • Method for extracting dietary fiber from potato residues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]After the potato residue is dried, crush it through a 40-mesh sieve, take 100g of potato residue powder with a particle size of less than 40 mesh (450μm), add 600ml of water, add 10ul of mixed enzyme at pH 5.0 and temperature 50°C, enzymatically hydrolyze for 0.5h, and then boil 30min, cooled to a temperature of 50°C, at pH 5.0, 10ul of neutral protease was added at a temperature of 50°C, enzymatically hydrolyzed for 1h, then boiled for 30min, cooled to a temperature of 40°C. Filter the potato pulp and separate into filtrate and filter residue. The filter residue was dried at a temperature of 40°C, crushed, and sieved to obtain dietary fiber products of 80 μm, 100 μm, 150 μm, 200 μm, and 450 μm, and the product properties were measured.

Embodiment 2

[0035] After the potato residue is dried, crush it through a 40-mesh sieve, take 100g of potato residue powder with a particle size of less than 40 mesh (450μm), add 1000ml of water, add 50ul of mixed enzyme at pH 7.0 and temperature 60°C, enzymatically hydrolyze for 2h, and then boil for 60min , cooled to a temperature of 60°C, at pH 7.0, 50ul of neutral protease was added at a temperature of 60°C, enzymatically hydrolyzed for 2h, then boiled for 60min, and cooled to a temperature of 60°C. Filter the potato pulp and separate into filtrate and filter residue. The filter residue was dried at a temperature of 60°C, crushed, and sieved to obtain dietary fiber products of 80 μm, 100 μm, 150 μm, 200 μm, and 450 μm, and the product properties were measured.

Embodiment 3

[0037] After the potato dregs are dried, they are pulverized into 80 μm, 100 μm, 150 μm, 200 μm, and 450 μm. The water holding power, oil holding power and swelling property of the five kinds of potato dreg powders are measured respectively, and the obtained results are as follows: Figure 1-3 The raw material curve in is shown.

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Abstract

The invention discloses a method for extracting a dietary fiber from potato residues, which comprises the following steps of: drying potato residues, pulverizing and screening to prepare potato residue powder; adding water into the potato residue powder, uniformly mixing to form a potato residue pulp, carrying out enzymolysis processing by using mixed enzyme, boiling and cooling; adding neutral proteinase to carry out enzymolysis processing, boiling and cooling, wherein the activity of the neutral proteinase is 1,600AU; filtering to form filter liquid and filter residues; and drying, pulverizing and screening the filter residues to obtain the dietary fiber. The invention improves the water-holding capacity and the oil-holding capacity of the potato dietary fiber by bio-enzyme processing and obtains a production process of the dietary fiber with optimal grain diameter simultaneously.

Description

technical field [0001] The invention relates to the technical field of dietary fiber production, in particular to a production process for extracting dietary fiber from potato residues. The dietary fiber is a non-starch polysaccharide substance that cannot be utilized by the human body, that is, cannot be digested by human digestive enzymes, and cannot be absorbed by the human body. Background technique [0002] Potato pulp is a by-product of the potato starch production process, where the main components are water, cell debris and residual starch granules. The water content of fresh potato dregs is as high as 80%, and there are as many as 33 kinds of bacteria. It is not easy to store and transport. After spoilage, it will produce stench and cause environmental pollution; if it is dried, the cost will be too high, which will increase the burden on enterprises. It is usually used as feed or as waste residue for landfill treatment, but it will cause soil and groundwater pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/216A23L1/308A23L33/105A23L33/22
Inventor 盖春慧林炜创钟振声
Owner SOUTH CHINA UNIV OF TECH
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