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Method for preparing dietary fiber flour from sweet potato starch production waste

A technology of dietary fiber powder and sweet potato starch, which is applied in the directions of food preparation, application, food science, etc., can solve the problems of incapable of making full use of sweet potato starch waste liquid, low utilization rate of potato residue, and low yield of dietary fiber, etc., and can reduce impurities. The effect of increasing the content, increasing the yield and improving the utilization rate

Active Publication Date: 2015-04-29
SISHUI LIFENG FOOD PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current method for extracting dietary fiber at home and abroad has low utilization rate of potato residue, low yield of dietary fiber, and cannot fully utilize the waste liquid produced in the production process of sweet potato starch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing dietary fiber powder with sweet potato starch production waste, is characterized in that, comprises the following steps:

[0032] ①Put the sweet potato slag produced during the production of sweet potato starch into an ultra-low temperature freezer at -60°C for 3 hours and freeze for 3 hours. The frozen sweet potato pieces are crushed into sweet potato ice slag at room temperature with a 100-mesh grinder;

[0033] ②Put the sweet potato ice slag obtained in step ① into an insulated container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid with a temperature 4 times the weight of sweet potato ice slag at a temperature of 55°C, and add citric acid to adjust the pH of the solution to 4.0, then add glucoamylase, add 150U of glucoamylase per gram of sweet potato ice slag, use the bottom high-pressure gas injection device to continuously spray high-pressure gas into the container, the pressure of th...

Embodiment 2

[0041] A method for preparing dietary fiber powder with sweet potato starch production waste, comprising the following steps:

[0042] ①Sweet potato slag produced during the production of sweet potato starch is placed in an ultra-low temperature freezer at -80°C for 6 hours, and the frozen sweet potato pieces are crushed into sweet potato ice slag at room temperature with a 150-mesh grinder;

[0043] ②Put the sweet potato icicles obtained in step ① into an insulated container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid that is 4 times the weight of sweet potato icicles at a temperature of 65°C, and add acetic acid to adjust the pH of the solution to 4.5 , then add glucoamylase, add 300U glucoamylase per gram of sweet potato ice slag, use the bottom high-pressure gas injection device to continuously spray high-pressure gas into the container, use the bottom high-pressure gas injection device to continuously spray high-...

Embodiment 3

[0051] A method for preparing dietary fiber powder with sweet potato starch production waste, comprising the following steps:

[0052] ①Sweet potato slag produced during the production of sweet potato starch is placed in an ultra-low temperature freezer at -80°C for 4 hours, and the frozen sweet potato pieces are crushed into sweet potato slag at room temperature with a 150-mesh grinder; After thawing at low temperature, put it into the ultra-low temperature freezer at a temperature of -80°C for 4 hours, take it out, and use a 150-mesh pulverizer to pulverize it into sweet potato ice slag at room temperature, and repeat the freezing-thawing pulverization 3 times;

[0053]②Put the sweet potato icicles obtained in step ① into a heat preservation container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid at a temperature 4 times the weight of sweet potato icicles at a temperature of 60°C, and add citric acid to adjust the pH ...

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PUM

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Abstract

The invention discloses a method for preparing dietary fiber flour from sweet potato starch production waste. According to the method, a dietary fiber is prepared from sweet potato residues and liquid waste generated in the sweet potato starch production process; the sweet potato residues and nutrient substances contained in the liquid waste are also utilized to cultivate acetobacter xylinum as a carbon source and a partial nitrogen source, and are fermented to prepare bacterial cellulose; the raw materials are fully utilized; meanwhile, methods for carrying out ultra-low temperature frozen pretreatment on the sweet potato residues and carrying out high-pressure gas impact-assisted mixed enzymolysis are adopted in the preparation process; and the yield of the dietary fiber flour is increased and the purity of the dietary fiber flour is improved. According to the method, the sweet potato starch production waste can be fully utilized; the yield of the dietary fiber is increased, and the purity of the dietary fiber is improved; and the pollution to environment caused by sweet potato starch production is reduced.

Description

technical field [0001] The invention belongs to the field of dietary fiber processing, and relates to a method for preparing dietary fiber powder from waste sweet potato residue and waste liquid in the production process of sweet potato starch. Background technique [0002] Sweet potato is an important crop with high and stable yield, rich nutrition and wide application. Sweet potato is rich in starch, and the starch content in sweet potato accounts for about 70% of the total dry matter, which can be used to prepare sweet potato starch. But, can produce the waste of sweet potato dregs and waste liquid in the process of sweet potato starch production, sweet potato dregs accounts for about 10-14% of raw material, and sweet potato dregs contains a large amount of nutrients, wherein starch content 40-50%, dietary fiber content 20-30%, the waste liquid contains soluble sugar, protein, amino acid, minerals and residual starch, etc. These substances are easily corrupted under the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/308A23L33/21
CPCA23V2002/00A23V2250/5116
Inventor 孔宪奎孔庆华
Owner SISHUI LIFENG FOOD PROD
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