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A kind of low-temperature alkali solution gelatinization sweet potato powder method

A technology of sweet potato flour and alkaline solution, which is applied in the field of biological resources, can solve the problems of consumption, high energy, and increased cost of sweet potato flour gelatinization, and achieves the effects of reducing energy consumption, simple operation, and being beneficial to recycling and reuse.

Inactive Publication Date: 2016-05-18
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of using this traditional starch gelatinization method is that it needs to be heated, which consumes a lot of energy and greatly increases the cost of sweet potato flour gelatinization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Take 16g of sweet potato powder, add it to 100mL of 6% sodium hydroxide solution, stir for 5 minutes, pre-cool in the refrigerator to below 0°C, take it out and stir evenly, add 100mL of 5% urea / thiourea aqueous solution, which is pre-cooled to about 4°C , stirring can quickly obtain a transparent sweet potato flour gelatinization solution, and the gelatinization time of sweet potato flour is within 6 minutes, which can efficiently and quickly gelatinize sweet potato flour. In the prepared sweet potato flour gelatinization solution, the content of sweet potato flour is 8%, hydrogen The sodium oxide content is 6%, the urea / thiourea content is 5%, and the balance is water.

Embodiment 2

[0011] Pre-cool 100mL of 6% sodium hydroxide aqueous solution to below 0°C, add 16g of sweet potato powder and stir evenly to form a low-temperature alkali solution of sweet potato powder, then add 100mL of 5% urea / thiourea aqueous solution pre-cooled to about 4°C for stirring and mixing. The powder gelatinizes within 6 minutes to produce a transparent low-temperature alkaline solution of sweet potato powder. The content of sweet potato flour in the prepared sweet potato flour low-temperature alkaline solution is 8%, the content of sodium hydroxide is 6%, the content of urea / thiourea is 5%, and the rest is water.

Embodiment 3

[0013] Take 10g of sweet potato powder, add it to 100mL of 8% sodium hydroxide solution, stir for 5 minutes, pre-cool in the refrigerator to below 0°C, take it out and stir evenly, add 100mL of 9% urea / thiourea aqueous solution, which is pre-cooled to about 4°C , stirring can quickly obtain a transparent sweet potato flour gelatinization solution, and the gelatinization time of sweet potato flour is within 6 minutes, which can efficiently and quickly gelatinize sweet potato flour. In the prepared sweet potato flour gelatinization solution, the content of sweet potato flour is 5%, hydrogen The sodium oxide content is 8%, the urea / thiourea content is 9%, and the balance is water.

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PUM

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Abstract

The invention discloses a method for gelatinizing sweet potato flour, in particular to a method for gelatinizing sweet potato flour with a low-temperature alkali solution as a solvent. In this method, sodium hydroxide / urea / thiourea is used as the solvent system, and 6-10% sodium hydroxide aqueous solution is pre-cooled to -4-0°C, and sweet potato powder is added to form alkaline sweet potato powder, or sweet potato powder is mixed with 6 ~10% sodium hydroxide aqueous solution is mixed and pre-cooled to -4~0℃, and then 3~12% urea / thiourea aqueous solution precooled to -4~0℃ is added for stirring and mixing, and a transparent low-temperature alkali solution paste can be obtained Melt sweet potato flour. The method can quickly and effectively dissolve sweet potato powder, including sweet potato starch and sweet potato cellulose, and can obtain a high-solubility low-temperature alkaline solution of sweet potato powder, thereby utilizing sweet potato resources more effectively. The invention has simple raw materials, simple preparation process, easy recovery of solvent and no environmental pollution in the dissolution process.

Description

technical field [0001] The invention relates to a method for gelatinizing sweet potato powder with a low-temperature alkaline solution, which belongs to the field of biological resources. The invention is a novel green and environment-friendly gelatinization technology for sweet potato powder. Background technique [0002] Sweet potato, also known as sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, etc., belongs to Convolvulaceae, an annual plant. Its main production area is south of 40° north latitude, and 90% of the sweet potato production is in Asia. my country is the country with the largest sweet potato cultivation area, accounting for more than half of the world's total sweet potato cultivation area, and its output ranks first in the world. Sweet potato is a starch-rich plant with a starch content of about 30%. It is an industrial raw material for the production of vermicelli, modified starch, starch sugar,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B30/12
Inventor 田双起赵仁勇王新伟
Owner HENAN UNIVERSITY OF TECHNOLOGY