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Method for utilizing distiller's grains to extract dietary fibers

A technology for dietary fiber and distiller's grains, applied in the fields of application, food science, food ingredients, etc., can solve the problems of high moisture content, perishability, negative impact on the surrounding environment of distiller's grains, etc., to achieve high extraction efficiency, reduce pollution, improve utilization value and The effect of utilization

Inactive Publication Date: 2019-09-13
湖南双晟科技信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Distiller's grains are the main by-products of liquor production, which mainly contain crude protein and crude fiber, and also contain a small amount of fat, various amino acids, vitamins and minerals, etc. Without reasonable treatment and utilization, it will easily have a negative impact on the surrounding environment
Currently, distiller's grains are mainly utilized in the following ways: directly as feed or simply dried and used as feed raw materials; distiller's grains are re-fermented to produce protein feed; anaerobic fermentation is used to produce biogas; edible fungus is cultivated, etc. The utilization value of distiller's grains is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for extracting dietary fiber from distiller's grains, comprising the following steps:

[0015] S1. Take the distiller's grains, add water to grind, adjust the pH to 4, add an appropriate amount of protease for enzymolysis for 5 hours, and obtain an enzymatic hydrolysis product;

[0016] The mass ratio of the distiller's grains to the water is 1:10, and the particle size after refining is 60 mesh; the added amount of the proteolytic enzyme is 4% of the weight of the distiller's grains; the enzymatic hydrolysis temperature is 45°C;

[0017] S2. Ultrasonic extraction of the enzymatic hydrolyzate for 50 minutes, with an ultrasonic power of 300 W, and filtering to remove the precipitate to obtain an ultrasonic extract;

[0018] S3. Adjust the pH of the ultrasonic extract to neutral, concentrate to 20% of the original volume, add an appropriate amount of absolute ethanol, let stand for precipitation for 1 hour, filter and dry to obtain dietary fiber.

[0019] The ad...

Embodiment 2

[0021] A method for extracting dietary fiber from distiller's grains, comprising the following steps:

[0022] S1. Take the distiller's grains, add water to grind, adjust the pH to 5, and add an appropriate amount of protease for enzymolysis for 6 hours to obtain an enzymatic hydrolysis product;

[0023] The mass ratio of the distiller's grains to the water is 1:13, and the particle size after refining is 80 mesh; the added amount of the hydrolytic protease is 5% of the weight of the distiller's grains; the enzymatic hydrolysis temperature is 50°C;

[0024] S2. Ultrasonic extraction of the enzymatic hydrolyzate for 60 min, with an ultrasonic power of 400 W, and filtering to remove the precipitate to obtain an ultrasonic extract;

[0025] S3. Adjust the pH of the ultrasonic extract to neutral, concentrate it to 25% of the original volume, add an appropriate amount of absolute ethanol, let it settle for 1.5 hours, filter, and dry to obtain dietary fiber.

[0026] The added amou...

Embodiment 3

[0028] A method for extracting dietary fiber from distiller's grains, comprising the following steps:

[0029] S1. Take the distiller's grains, add water to grind, adjust the pH to 6, add an appropriate amount of proteolytic enzyme to hydrolyze for 7 hours, and obtain an enzymatic hydrolysis product;

[0030] The mass ratio of the distiller's grains to the water is 1:15, and the particle size after refining is 100 mesh; the added amount of the hydrolytic protease is 6% of the weight of the distiller's grains; the enzymatic hydrolysis temperature is 55°C;

[0031] S2. Ultrasonic extraction of the enzymatic hydrolyzate for 70 minutes, with an ultrasonic power of 500 W, and filtering to remove the precipitate to obtain an ultrasonic extract;

[0032] S3. Adjust the pH of the ultrasonic extract to neutral, concentrate it to 30% of the original volume, add an appropriate amount of absolute ethanol, let it settle for 2 hours, filter, and dry to obtain dietary fiber.

[0033] The ad...

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PUM

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Abstract

The invention discloses a method for utilizing distiller's grains to extract dietary fibers. The method includes the following steps: taking distiller's grains, adding water to perform pulp refining,adjusting pH to 4-6, adding a proper number of proteolytic enzymes to perform enzymatic hydrolysis for 5-7 h, and obtaining an enzymatic hydrolysate; performing ultrasonic extraction on the enzymatichydrolysate for 50-70 min, and filtering and removing sediments so that an ultrasonic extract product can be obtained; and adjusting the pH of the ultrasonic extract product to neutral, adding a proper amount of absolute ethanol after concentration, performing standing and precipitation for 1-2 h, and performing filtering and drying to obtain dietary fibers. Through the provided method, the utilization values and utilization rates of the distiller's grains can be enhanced, and the pollution of the distiller's grains to environments can be reduced.

Description

technical field [0001] The invention relates to the technical field of resource reuse, in particular to a method for extracting dietary fiber from distiller's grains. Background technique [0002] Distiller's grains are the main by-products of liquor production, which mainly contain crude protein and crude fiber, and also contain a small amount of fat, various amino acids, vitamins and minerals, etc. Without reasonable treatment and utilization, it is very easy to have a negative impact on the surrounding environment. At present, distiller's grains are mainly used in the following ways: directly as feed or as feed raw material after simple drying; distiller's grains are re-fermented to produce protein feed; anaerobic fermentation is used to produce biogas; edible fungi are cultivated, etc. The utilization value of distiller's grains is relatively low. Contents of the invention [0003] In order to solve the above-mentioned technical problem of low utilization value of dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/21A23L5/30
CPCA23L5/32A23L33/21A23V2002/00A23V2250/5116A23V2300/48
Inventor 季家举
Owner 湖南双晟科技信息咨询有限公司