Extraction process of dietary fibers in sweet potatoes

A technology of dietary fiber and extraction process, which is applied in the field of extraction process of dietary fiber in sweet potato, can solve problems such as low extraction rate, complicated extraction process operation, product pollution, etc., achieve sufficient fermentation process, increase economic value, and complete enzymatic hydrolysis Effect

Pending Publication Date: 2021-06-01
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of complex operation, low extraction rate and serious product pollution in the current sweet potato fiber extraction process. dietary fiber

Method used

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  • Extraction process of dietary fibers in sweet potatoes
  • Extraction process of dietary fibers in sweet potatoes

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of extraction process of dietary fiber in sweet potato, comprises the following steps:

[0027] 1) Wash and peel fresh sweet potatoes, slice them, wash them in clean water for several times, dry them in an oven at 60°C for 48 hours, and pulverize them in an ultrafine pulverizer to obtain sweet potato residues;

[0028] 2) According to the solid-liquid ratio of 1:3, mix the sweet potato residue and 10% sodium carbonate aqueous solution evenly, and hydrolyze at 50°C for 60 minutes, cool and filter;

[0029] 3) Add sterile water to the material obtained in step (2) according to the material-to-liquid ratio of 1:12, sterilize under high-pressure steam at 120°C for 1 hour, and then add a starter culture agent in an amount of 0.3% of the total weight of the material, and then inoculate the inoculated Place the sweet potato material at 25°C for fermentation and cultivation for 24 hours to obtain a sweet potato dregs fermentation liquid; then add amylase and papain to fu...

Embodiment 2

[0038] A kind of extraction process of dietary fiber in sweet potato, comprises the following steps:

[0039] 1) Wash and peel fresh sweet potatoes, slice them, wash them in clean water for several times, dry them in an oven at 60°C for 48 hours, and pulverize them in an ultrafine pulverizer to obtain sweet potato residues;

[0040] 2) According to the solid-liquid ratio of 1:3, mix the sweet potato residue and 10% sodium carbonate aqueous solution evenly, and hydrolyze at 50°C for 90 minutes, cool and filter;

[0041] 3) Add sterile water to the material obtained in step (2) according to the material-to-liquid ratio of 1:12, sterilize under high-pressure steam at 130°C for 1 hour, and then add a starter culture agent in an amount of 0.5% of the total weight of the material, and then inoculate the inoculated The sweet potato material was placed at 28°C for fermentation and cultivation for 36 hours to obtain a sweet potato dregs fermentation liquid; then amylase and papain were...

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Abstract

The invention discloses an extraction process of dietary fibers in sweet potatoes, and belongs to the technical field of food processing. Firstly, sweet potatoes are subjected to superfine grinding, partial bonds of dietary fibers can be broken and converted into water-soluble polymers under the high-strength mechanical shearing action, and dissolution of the water-soluble dietary fibers is increased. Secondly, the sweet potato residues obtained after superfine grinding are subjected to alkali treatment by screening a proper material-liquid ratio, sweet potatoes are fermented with a specific leavening agent, active substances generated by bacillus amyloliquefaciens can enable the dietary fiber structure to become loose, amylase and papain are added, the fermentation process is more sufficient, enzymolysis is more thorough, more effective substances are dissolved out, the dissolution of the dietary fibers is promoted through interaction, the extraction rate of the dietary fibers is increased, and the properties such as the water holding rate of the dietary fibers are improved. The water-soluble dietary fibers in the sweet potatoes are extracted through the technology, the yield can reach 20% or above, and the economic value of the sweet potatoes is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a process for extracting dietary fiber from sweet potatoes. Background technique [0002] Sweet potato originated abroad and is a kind of root plant. Early sweet potato seedlings arose from trade exchanges among merchants. Sweet potato is one of the nutrients in the world. Compared with other crops, the sweet potato grows in a less harsh environment and is easy to survive in most places. Regardless of whether the seedlings are planted in farmland or in dry and barren land, they can grow stably. [0003] People also call sweet potato as sweet potato, sweet potato, red taro, etc. It has extremely high edible value. In 100g of sweet potatoes, protein accounts for 1.8%, carbohydrates account for 29.5%, fat accounts for 0.2%, phosphorus accounts for 20%, calcium accounts for 19%, and iron accounts for 0.5%. In addition, sweet potatoes also have other important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/21
CPCA23L33/21A23V2002/00A23V2200/30A23V2250/5116A23V2300/14
Inventor 廖爱美黄继红魏兆军侯银臣惠明潘龙刘娜韦爽
Owner HENAN UNIVERSITY OF TECHNOLOGY
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