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Method for Separating Starches with Different Particle Sizes by Gravity Suspension in Polyethylene Glycol 200 Solution

A technology of polyethylene glycol and starch, which is applied in the field of food processing, can solve the problems of long separation time or poor separation effect, unfavorable water resource conservation, waste of a lot of time, etc., achieve good compatibility and excellent lubricity, and save production cost, effect of avoiding waste

Active Publication Date: 2021-06-08
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for gravity suspension of polyethylene glycol 200 solution to separate starch particles of large and small sizes, which solves the problem of long separation time or poor separation effect of existing starch separation methods, which easily wastes a lot of time or remains in the separation solution. Separate size particles cause waste of raw materials and are not conducive to the conservation of water resources

Method used

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  • Method for Separating Starches with Different Particle Sizes by Gravity Suspension in Polyethylene Glycol 200 Solution

Examples

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Effect test

Embodiment 1

[0022] This embodiment is an example of the method for separating starches with different particle sizes by gravity suspension of polyethylene glycol 200 solution according to the present invention, comprising the following steps:

[0023] (1) Mix sugar palm powder with 0.25% sodium hydroxide solution to make 10% starch milk, stir it magnetically for 24 hours, wash with water three times to remove lye, and dry to obtain pure starch.

[0024] (2) Mix the pure starch obtained in step (1) with 0.25% polyethylene glycol suspension to obtain a sample suspension with a concentration of 1%.

[0025] (3) Stir the sample suspension prepared in (2) evenly, and use the gravity suspension method to separate the particles with different gravity. Separation of small particles is to be sampled once every 40 minutes. Each time, 10% volume solution of the upper layer is taken, and the suspension is filled with 2000mL, stirred evenly, naturally precipitated, and sampled, and repeated 40 times; ...

Embodiment 2

[0029] This embodiment is another example of the method for separating starches with different particle sizes by gravity suspension of polyethylene glycol 200 solution according to the present invention, which includes the following steps:

[0030] (1) Mix cornstarch with 0.25% sodium hydroxide solution to make 10% starch milk, stir magnetically for 24 hours, wash with water three times to remove lye, and dry to obtain pure starch.

[0031] (2) Take the pure starch obtained in step (1) and 0.25% polyethylene glycol suspension to obtain a 1% sample suspension.

[0032] (3) Stir the sample suspension prepared in (2) evenly, and use the gravity suspension method to separate the particles with different gravity. Small particles are separated by sampling once every 40 minutes, taking 10% volume solution of the upper layer each time, filling 2000mL, stirring evenly, naturally precipitating, sampling, and repeating this 40 times; large particles are sampled once every 18 minutes, rep...

Embodiment 3

[0036] This embodiment is another example of the method for separating starches with different particle sizes by using polyethylene glycol 200 solution gravity suspension according to the present invention, comprising the following steps:

[0037] (1) Mix lotus root starch with 0.25% sodium hydroxide solution to make 10% starch milk, stir magnetically for 24 hours, wash with water three times to remove lye, and dry to obtain pure starch.

[0038] (2) Mix the pure starch obtained in step (1) with 0.25% polyethylene glycol 200 solution to obtain a sample suspension with a concentration of 1%.

[0039] (3) Stir the sample suspension prepared in (2) evenly, and use gravity suspension to separate particles of different sizes. Small particles are separated by sampling once every 40 minutes, taking 10% volume solution of the upper layer each time, filling 2000mL, stirring evenly, naturally precipitating, sampling, and repeating this 40 times; large particles are sampled once every 18...

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Abstract

A method for separating starches with different particle sizes by gravity suspension in a polyethylene glycol 200 solution, which relates to the field of food processing, and the method steps include: preparation of raw materials, preparation of a suspension, separation of particles with different particle sizes by gravity suspension, washing, and drying to obtain starches of different particle sizes. particle size starch. Adopting the present invention can solve the problem that the separation time or separation effect of the existing starch separation method is not good, and it is easy to waste a lot of time or keep certain unseparated particles in the separation solution, resulting in waste of raw materials, and is not conducive to the saving of water resources. question. It is suitable for the separation process of starch granules in starch production.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a method for gravity suspension separation of starch with different particle sizes in polyethylene glycol 200 solution. Background technique [0002] Separation is an important operation link in starch production. The existing industrial separation of starch particles generally uses sieves of different apertures for separation or natural suspension of distilled water for separation. Among them, water washing is used for filtration and separation, which is simple and effective, and has been widely used in the food industry. Wide range of applications. [0003] However, the existing starch separation methods take a long time to separate or the separation effect is not good, and it is easy to waste a lot of time or leave a certain size of unseparated particles in the separation solution, resulting in waste of raw materials, and is not conducive to the saving of water resources. Cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B5/44B01D21/00
CPCB01D21/0084B03B5/44
Inventor 符珍梅江洋黄婷
Owner GUANGXI UNIV
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