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Method for extracting sweet buckwheat dietary fibers

A dietary fiber and extraction method technology, which is applied in the field of food processing, can solve the problems of resource waste and underutilization, and achieve the effects of increased application value, high degree of substitution, and high yield

Inactive Publication Date: 2010-06-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dietary fiber has many health functions, but it is not fully utilized in the deep processing and utilization of buckwheat, resulting in a considerable waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: 1) Pretreatment: take sweet buckwheat husk and kernels, dry them at 60°C to 80°C, and then pulverize them respectively, and pass through a 60-mesh sieve;

[0015] 2) Extraction: The conditions for enzymatically extracting dietary fiber from buckwheat husks are as follows: add 0.3% buckwheat husk mass α-amylase to the buckwheat husk for 30 minutes, and then add 0.2% buckwheat husk mass papain enzymatic hydrolysis for 45 minutes;

[0016] The conditions for enzymatically extracting dietary fiber from buckwheat kernels are as follows: add 0.2% of the mass of buckwheat kernels to the buckwheat kernels for enzymatic hydrolysis with α-amylase for 120 minutes, and then add 0.5 percent of the mass of buckwheat kernels for enzymatic hydrolysis for 45 minutes;

[0017] 3) Separation and purification: the buckwheat husks and kernels extracted in step 2) are suction-filtered, and the filter residue is washed with absolute ethanol and acetone respectively to obtain IDF; W...

Embodiment 2

[0023] Example 2: 1) Pretreatment: take sweet buckwheat husk and kernels, dry them at 60°C to 80°C, and then pulverize them respectively, and pass through a 120-mesh sieve;

[0024] 2) Extraction: The conditions for enzymatically extracting dietary fiber from buckwheat husks are: add 0.5% buckwheat husk mass α-amylase to the buckwheat husk for 60 minutes, and then add 0.3% buckwheat husk mass papain for 70 minutes;

[0025] Alkaline extraction of dietary fiber in buckwheat kernels is as follows: add buckwheat kernels 0.2% of the mass of buckwheat kernels to α-amylase for 75 minutes, and then add buckwheat kernels and 4% sodium hydroxide solution at a ratio of 1:16g Mix at a ratio of / ml, and alkali hydrolyze at 75°C for 60 minutes;

[0026] 3) Separation and purification: the buckwheat husks and kernels extracted in step 2) are suction-filtered, and the filter residue is washed with absolute ethanol and acetone respectively to obtain IDF; the filtrate is adjusted to a pH of 3.8...

Embodiment 3

[0032] Example 3: 1) Pretreatment: Take sweet buckwheat husk and kernels, dry them at 60°C to 80°C, and then pulverize them respectively, and pass through a 100-mesh sieve;

[0033] 2) Extraction: The conditions for enzymatically extracting dietary fiber from buckwheat husks are as follows: add 0.4% buckwheat husk mass α-amylase to the buckwheat husk for 90 minutes, and then add buckwheat husk mass 0.4% papain enzymatic hydrolysis for 90 minutes;

[0034] The conditions for enzymatically extracting dietary fiber from buckwheat kernels are: adding 0.3% buckwheat kernel mass α-amylase to the buckwheat kernels for enzymolysis for 90 minutes, then adding buckwheat kernel mass 0.4% papain enzymatic hydrolysis for 70 minutes;

[0035] 3) Separation and purification: centrifuge the buckwheat husks and kernels extracted in step 2) at 2500-4000 r / min, wash the filter residue with absolute ethanol and acetone respectively to obtain IDF; SDF was obtained by washing with absolute ethanol ...

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PUM

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Abstract

The invention discloses a method for extracting sweet buckwheat dietary fibers, which comprises an enzyme method and an alkaline method for extracting the dietary fibers in kernels and shells of the sweet buckwheat and makes the visual color of the obtained dietary fibers more acceptable by people and improves the application value of the dietary fibers by the decoloring and modification treatments. Currently, most processing residues of the buckwheat are generally abandoned or put away cheaply so as to cause the waste of a large amount of buckwheat resource. The invention adopts different methods to extract and carry out decoloring treatment to prepare the sweet buckwheat dietary fibers with higher activity and few hazardous substance residuals, applies the prepared buckwheat dietary fibers to the food industry, and applies the prepared buckwheat dietary fibers into other fields by modification. The invention can solve the technical problems of extraction, decoloring, modification and the like of the sweet buckwheat dietary fibers, can improve the competitive advantage of the economy of the buckwheat production place, realizes the industrialization development and utilization of the sweet buckwheat dietary fibers, and promotes the economy development of the buckwheat production place.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a method for extracting sweet buckwheat dietary fiber. Background technique [0002] With the development of the economy, people's living standards are improving day by day, and eating habits have undergone great changes. The "rich man's disease" (obesity, high blood pressure, coronary heart disease, diabetes, colon cancer, etc.) caused by unbalanced diet or overnutrition It has become a major disease that endangers the health of our people. A large number of research results have shown that the rise in the incidence of "rich man's disease" is related to insufficient dietary fiber intake in the diet. Therefore, our country has done a lot of research on the physiological functions of dietary fiber, and it has been confirmed that it can prevent and treat various diseases and has various physiological functions, so it is called the "seventh nutrient". [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/10A23L1/308A23L33/21
Inventor 杨芙莲聂小伟任蓓蕾何琳
Owner SHAANXI UNIV OF SCI & TECH
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