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Novel method for preparing wheat bran dietary fibers by taking wheat bran as raw material

A technology for dietary fiber and dietary fiber content of wheat bran, applied in food preparation, food science, application, etc., can solve the problems of low yield of water-soluble dietary fiber and single product, and achieve high content of soluble dietary fiber and simple process , easy to operate and the effect of large-scale promotion and application

Active Publication Date: 2015-04-29
FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art usually only adopts one extraction method, and there are technical problems such as single product and low yield of water-soluble dietary fiber

Method used

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  • Novel method for preparing wheat bran dietary fibers by taking wheat bran as raw material

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Effect test

Embodiment 1

[0031] Embodiment 1: A kind of new method of preparing wheat bran dietary fiber with wheat bran as raw material, described wheat bran dietary fiber is the dietary fiber rich in arabinoxylan, carries out the following process steps successively with wheat bran as raw material:

[0032] (1) Raw material pretreatment: ultrafinely pulverize wheat bran, pass through a 200-mesh sieve to obtain wheat bran powder, and store it at room temperature for later use;

[0033] (2) Rapid extraction with alkaline solution: add the wheat bran micropowder in step (1) into alkaline solution for rapid extraction to obtain wheat bran suspension. The conditions for the rapid extraction are: pH 13.0, solid-liquid ratio 1:20, The rotation speed is 3000r / min, and the extraction time is 2.0min;

[0034] (3) Ethanol precipitation: add absolute ethanol to the wheat bran suspension prepared in step (2) at a volume ratio of 4:1, stir and mix evenly, centrifuge at 5000r / min for 10min, collect the precipitate...

Embodiment 2

[0039] Embodiment 2: A kind of new method of preparing wheat bran dietary fiber with wheat bran as raw material, described wheat bran dietary fiber is the dietary fiber rich in arabinoxylan, with wheat bran as raw material, carry out the following process steps successively:

[0040] (1) Raw material pretreatment: ultrafinely pulverize wheat bran, pass through a 100-mesh sieve to obtain wheat bran micropowder, and store it at room temperature for later use;

[0041] (2) Rapid extraction with alkaline solution: add the wheat bran micropowder in step (1) into alkaline solution for rapid extraction to obtain wheat bran suspension. The conditions for the rapid extraction are: pH 12.0, solid-liquid ratio 1:15, The rotation speed is 6000r / min, and the extraction time is 1.0min;

[0042] (3) Ethanol precipitation: Add absolute ethanol to the wheat bran suspension prepared in step (2) at a volume ratio of 5:1, stir and mix evenly, centrifuge at 3000r / min for 20min, collect the precipi...

Embodiment 3

[0047] Embodiment 3: A kind of new method of preparing wheat bran dietary fiber with wheat bran as raw material, described wheat bran dietary fiber is the dietary fiber rich in arabinoxylan, with wheat bran as raw material, carry out following process step in sequence:

[0048] (1) Raw material pretreatment: ultrafinely pulverize wheat bran, pass through a 150-mesh sieve to obtain wheat bran powder, and store it at room temperature for later use;

[0049] (2) Rapid extraction with alkaline solution: add the wheat bran micropowder in step (1) into alkaline solution for rapid extraction to obtain wheat bran suspension. The conditions for the rapid extraction are: pH 11.0, solid-liquid ratio 1:10 , the rotation speed is 6000r / min, and the extraction time is 3.0min;

[0050] (3) Ethanol precipitation: Add absolute ethanol to the wheat bran suspension prepared in step (2) at a volume ratio of 3:1, stir and mix evenly, centrifuge at 4000r / min for 20min, collect the precipitate and d...

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Abstract

The invention discloses a novel method for preparing wheat bran dietary fibers by taking wheat bran as a raw material. The wheat bran dietary fibers are dietary fibers enriched with araboxylan and the content is more than 16.08%. The novel method takes the wheat bran as the raw material and sequentially comprises the following process steps: pre-treating the raw material; rapidly extracting with an alkaline solution; carrying out ethanol precipitation; adding water to suspend again and blasting by steam; hydrolyzing compound protease; hydrolyzing compound amylase; carrying out secondary alcohol precipitation; and sieving. The dietary fiber product has high wheat bran dietary fiber yield and dietary fiber purity, and also has high content of araboxylan and high content of soluble dietary fibers; the product has good functional properties including water binding capacity, viscosity and the like, and has a plurality of physiological functions of relaxing bowel, controlling blood glucose, lowering blood fat, adjusting human immunity and preventing colon cancer and the like, so that high-quality raw material guarantees are provided for widely applying the wheat bran dietary fibers to foods.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a new method for preparing dietary fiber rich in arabinoxylan from wheat bran. Background technique [0002] Wheat bran is the main bulk by-product of wheat processing. Wheat bran mainly includes the epidermis, pericarp, seed coat, nacelle and aleurone layer of unused grains in processing, accounting for about 25% of the weight of the grains. It is produced every year in my country The amount of wheat bran reaches 20 million tons. Wheat bran is mainly composed of dietary fiber, starch and protein, and also contains mineral elements such as phosphorus, potassium, sodium, magnesium, iron, zinc, selenium, copper, manganese, carotene and thiamine. , riboflavin, niacin and other vitamins, of which dietary fiber accounts for about 45%-50%, starch accounts for about 15%-20%, and protein accounts for about 14%-18%. It can be seen that wheat bran is a renewable resource. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/308A23L33/22
Inventor 梅新何建军施建斌程薇蔡沙陈学玲关健张国真
Owner FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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