Method for preparing corn seed coat dietary fiber

A corn seed coat and dietary fiber technology, applied in food preparation, food science, application, etc., can solve the problems of difficult control of product yield and quality, reduced physiological activity of dietary fiber, and non-advocacy

Inactive Publication Date: 2011-01-19
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because general chemical reagents can reduce the physiological activity of corn seed coat dietary fiber, the use of chemical methods on corn seed coat is not advocated. Traditional dietary fiber preparation processes mostly use acid and alkali solution alternate hydrolysis to remove starch and protein, but the hydrolyzed products The flavor and color are poor, the product yield and quality are not easy to control, and it also has a certain impact on the processing properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: After the corn seed coat is crushed, the particle size ranges from 10 to 30 mesh, water is used as the extractant, the solid-liquid ratio is 1:10, the temperature is 40 ° C, and the ultrasonic power is 600W. Ultrasonic treatment for 50 minutes; and then under the condition of microwave 300W Down treatment for 2 minutes, cooled to 45 ° C, adding 0.3% (w / w) mixed enzyme preparation of α-amylase and protease in the feed liquid (the ratio of α-amylase and protease is 2: 1), pH5.0 Enzymatic hydrolysis under conditions for 30 minutes. After the feed liquid after enzymolysis is filtered, the filter residue is washed with deionized water, the filtrate is concentrated and deproteinized, and then washed with alcohol, and the two samples are dried respectively and superfinely pulverized to obtain corn seed coat dietary fiber.

Embodiment 2

[0016] Example 2: After the corn seed coat is pulverized, the particle size range is 20-40 mesh, water is used as the extractant, the solid-liquid ratio is 1:15, the temperature is 65 ° C, and the ultrasonic power is 400W. Ultrasonic treatment for 20 minutes; then under the condition of microwave 500W Treat at lower temperature for 3 minutes, cool to 50°C, add 0.5% (w / w) mixed enzyme preparation of α-amylase and protease in the feed liquid (the ratio of α-amylase and protease is 1: 2), pH4.0 Enzymatic hydrolysis under conditions for 40 minutes. After the feed liquid after enzymolysis is filtered, the filter residue is washed with deionized water, the filtrate is concentrated and deproteinized, and then washed with alcohol, and the two samples are dried respectively and superfinely pulverized to obtain corn seed coat dietary fiber.

Embodiment 3

[0017] Example 3: After the corn seed coat is crushed, the particle size range is 40-60 mesh, water is used as the extractant, the solid-liquid ratio is 1:20, the temperature is 50 ° C, and the ultrasonic power is 200W. Ultrasonic treatment for 40 minutes; and then under the condition of microwave 400W Down treatment for 4 minutes, cooled to 65 ° C, adding 0.7% (w / w) mixed enzyme preparation of α-amylase and protease in the feed liquid (the ratio of α-amylase and protease is 1: 3), pH4.5 Enzymatic hydrolysis under conditions for 50 minutes. After the feed liquid after enzymolysis is filtered, the filter residue is washed with deionized water, the filtrate is concentrated and deproteinized, and then washed with alcohol, and the two samples are dried respectively and superfinely pulverized to obtain corn seed coat dietary fiber.

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PUM

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Abstract

The invention relates to a method for preparing corn seed coat dietary fiber, which comprises the following steps of: crushing corn seed coats, performing ultrasonic treatment and microwave treatment on the crushed corn seed coats by using water as an extraction agent respectively, cooling the solution, adding a mixed enzyme preparation of alpha-amylase and protease into the solution, and performing enzymolysis on the solution for 20 to 50 minutes at the pH of between 4.0 and 6.0; and after the solution is filtered after the enzymolysis, washing the filter residue by using deionized water, concentrating the filtrate, removing protein from the filtrate and washing the concentrate by using alcohol, drying the two samples respectively, and performing ultra-fine pulverization on the two dried samples to obtain the corn seed coat dietary fiber. The yield of the dietary fiber prepared by the method reaches 87.4 percent; and the dietary fiber granules are fine and light yellow, have no special smell, and can be used as a dietary fiber nutrition enhancer of multiple food products.

Description

technical field [0001] The invention relates to a preparation method of dietary fiber, in particular to a preparation method of dietary fiber using corn seed coat as raw material. Background technique [0002] With the rapid development of my country's economy, people's daily diet structure has undergone great changes. However, due to unscientific dietary structure and insufficient intake of dietary fiber, the emergence of "disease of civilization", high blood pressure, hyperlipidemia, diabetes, constipation, obesity, coronary heart disease, etc. are all related to insufficient intake of high-quality dietary fiber , has brought serious harm to people's health. Patients with coronary heart disease, hypertension, and diabetes account for more than 15% of adults in cities across the country, and they are increasing year by year. Dietary fiber is a very important component to maintain the normal functioning of the human body. After in-depth research, nutritionists have confirm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L33/22
Inventor 王岸娜吴立根王晓曦王岸明李雪琴张国治
Owner HENAN UNIVERSITY OF TECHNOLOGY
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