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Sweet potato dietary fiber and preparation method thereof

A technology for dietary fiber and sweet potato, which is applied to the preparation of sweet potato dietary fiber and the field of sweet potato dietary fiber, can solve the problems of low purity of sweet potato soluble dietary fiber, affecting the efficacy of dietary fiber, and reducing the water holding capacity of the product, and achieves small fiber particle size, Improved palatability, water-holding capacity, and strong swelling ability

Inactive Publication Date: 2017-12-01
北京中康长和健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional treatment methods such as enzymatic hydrolysis and chemical methods, most of the sweet potato soluble dietary fiber produced by such traditional methods have problems such as low purity, low yield, and poor taste, and some even cause the water-holding capacity of the product to decrease, affecting the dietary fiber. effect

Method used

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Examples

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Effect test

preparation example Construction

[0014] The preparation method of sweet potato dietary fiber of the present invention specifically comprises the following steps:

[0015] A. Pre-treatment: After drying and crushing the sweet potato by-products left over from sweet potato processing, add distilled water to cook at 110-120°C for 30-40 minutes, then concentrate, dry and crush the raw materials, then slowly spray and add water while stirring, and add water to the raw materials containing Adjust the water volume to 100-150%, then stop stirring and take out the raw material, seal it for 5-30 minutes, then put the raw material into the steam explosion device, raise it to 0.8-1.0Mpa in 1-4 minutes, keep the pressure for 50-80s, and release the pressure instantly , take out the raw material and add NaOH solution with a mass percentage concentration of 2.5-3, extract at a power of 160-200W for 25-30min to obtain an extract, then centrifuge the extract at 5500-6000r / min for 3-4min and filter, take the filter residue, and...

Embodiment 1

[0029] The preparation method of sweet potato dietary fiber comprises the following steps:

[0030] A. Pretreatment: After drying and crushing the sweet potato residue, add distilled water and cook at 110°C for 30 minutes, then concentrate, dry and crush the raw material, then slowly spray and add water to the raw material while stirring, adjust the water content of the raw material to 100%, and then stop Stir and take out the raw material, seal it for 5 minutes, put the raw material into the steam explosion device, raise it to 0.8Mpa in 1 minute, release the pressure instantly after holding the pressure for 50s, take out the raw material and add NaOH solution with a mass percentage concentration of 2.5, and extract it under 160W power 25min to get the extract, then centrifuge the extract at 5500r / min for 3min and then filter, take the filter residue, then add water to the filter residue, the mass ratio of filter residue to water is 1:1, then add de-impurity enzymatic hydrolysi...

Embodiment 2

[0035] The preparation method of sweet potato dietary fiber comprises the following steps:

[0036]A. Pretreatment: After drying and crushing sweet potato residue, add distilled water and cook at 120°C for 40 minutes, then concentrate, dry and crush the raw materials, then slowly spray and add water to the raw materials while stirring, adjust the water content of raw materials to 150%, and then stop Stir and take out the raw material, seal it for 30 minutes, then put the raw material into the steam explosion device, raise it to 1.0Mpa in 4 minutes, release the pressure instantly after holding the pressure for 80 seconds, take out the raw material and add NaOH solution with a mass percentage concentration of 3, and extract it under 200W power After 30min to obtain the extract, the extract was centrifuged at 6000r / min for 4min and then filtered, the filter residue was taken, and then water was added to the filter residue. The mass ratio of mixed enzymes is 1:0.035, the enzymolys...

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Abstract

The invention discloses a preparation method of sweet potato dietary fiber. The preparation method comprises the steps of pre-treatment, semi-finished product preparation, purification and after-treatment. The invention also discloses the sweet potato dietary fiber prepared according to the preparation method of the sweet potato dietary fiber. According to the method disclosed by the invention, during pre-treatment, a mode of combination of high-temperature cooking treatment, steam explosion treatment and ultrasonic treatment on raw materials is adopted, so that the structure tissues of the raw materials can be effectively destroyed, and inclusions can be fully exposed; by combination of impurity removal treatment, non-dietary fiber components in the raw materials are further reduced; the raw materials after pre-treatment are not only favorable for enhancing the enzymolysis effect of cellulase or a compound enzyme of cellulase and hemicellulase to enable the enzymolysis to be more sufficient so as to increase the purity of a finished product, but also capable of effectively improving the palatability of the finished product; and the product after enzymolysis is purified to further increase the purity, so that the finished product has the advantage of high purity. The sweet potato dietary fiber disclosed by the invention also has the advantages of small fiber grain size as well as strong moisture holding capacity and swelling capacity.

Description

technical field [0001] The invention belongs to the technical field of dietary fiber preparation, and in particular relates to a preparation method of sweet potato dietary fiber and sweet potato dietary fiber. Background technique [0002] Dietary fiber is an important non-nutrient. It is a kind of indigestible part of carbohydrates such as non-starch polysaccharides and oligosaccharides. It can neither be digested and absorbed by the human gastrointestinal tract, nor can it produce energy. However, in recent years, more and more studies have shown that the intake of dietary fiber is closely related to human health, and adequate intake of dietary fiber will reduce the risk of constipation, obesity, diabetes, cardiovascular disease and intestinal cancer. For example, dietary fiber can absorb a large amount of water in the intestinal tract, keep the stool soft, effectively activate the beneficial bacteria in the intestinal tract, promote the proliferation of beneficial bacteri...

Claims

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Application Information

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IPC IPC(8): A23L33/21A23L5/10A23L29/00
CPCA23L33/21A23L5/13A23L5/17A23L29/06A23V2002/00A23V2200/14
Inventor 刘竞元杨映宁刘潇阳陈朝银
Owner 北京中康长和健康科技有限公司
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