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Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch

A production process, wheat starch technology, applied in the field of material extraction of superfine starch, can solve the problems of increasing fixed costs, low conversion rate of powdered sugar, etc., and achieve the effect of increasing yield

Inactive Publication Date: 2005-09-07
河南莲花集团技术开发公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 3. Mixed with other starches as raw materials for the production of fermented products, because most of the inner starches exist in a combined state with pentosaccharides, proteins and other substances, the conversion rate of powdered sugar is very low, which indirectly increases the fixed cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 993.6 tons of overflows with a solid content of 3.1% were generated during the production process of receiving wheat starch. (2), utilize the high-speed centrifuge to concentrate the overflow to obtain 226.8 tons of material with a solid content of 10.2% (wherein the starch content is 71.2%), and the remaining materials (underflow) enter the starch production system as process water. (3), carry out SO2 absorption to the concentrate to pH 3.2. (4) At this time, the temperature of the material was 38° C., adding cellulose composite enzyme with a solid weight of 0.5‰ in the overflow after concentration, and stirring for 2 hours. (5) After centrifugal separation and cleaning of the reacted material, 21.5 tons of wet material with a solid content of 63.9% was obtained. (6) 15.8 tons of superfine starch are obtained after the wet material obtained after separation is air-dried. After product inspection, the moisture content is 13.2%, the protein content is 0.65%, the yi...

Embodiment 2

[0026] (1) 993.6 tons of overflows with a solid content of 3.1% were generated during the production process of receiving wheat starch. (2), utilize the high-speed centrifuge to concentrate the overflow to obtain 226.8 tons of material with a solid content of 12% (wherein the starch content is 79.4%), and the remaining materials (underflow) enter the starch production system as process water. (3), carry out SO2 absorption to the concentrate to pH 3.0. (4) At this time, the temperature of the material is 35° C., adding a cellulose composite enzyme with a solid weight of 0.8‰ in the overflow after concentration, and stirring for 1 hour. (5) After centrifugal separation and cleaning of the reacted material, 18.4 tons of wet material with a solid content of 65.2% was obtained. (6) The wet material obtained after separation is air-dried to obtain 13.8 tons of superfine starch. After product inspection, the moisture content is 13.2%, the protein content is 0.65%, the yield of pure...

Embodiment 3

[0028] (1) 993.6 tons of overflows with a solid content of 3.1% were generated during the production process of receiving wheat starch. (2), utilize the high-speed centrifuge to condense the overflow to obtain 117.8 tons of materials with a solid content of 15% (wherein the starch content is 71.2%), and the remaining materials (top flow) enter the starch production system as process water. (3), carry out SO2 absorption to the concentrate to pH 3.5. (4) At this time, the temperature of the material was 55° C., adding cellulose composite enzyme with a solid weight of 1‰ in the overflow after concentration, and stirring for 3 hours. (5) After centrifugal separation and cleaning of the reacted material, 19.1 tons of wet material with a solid content of 64.8% was obtained. (6) 14.3 tons of ultra-fine starch were obtained after the wet material obtained after separation was air-dried. After product inspection, the moisture content is 13.2%, the protein content is 0.65%, the yield ...

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Abstract

The invention relates to a productive technology of extracting the super fine starch by making use of the overflow substance produced in the wheat starch productive process, which comprises the following steps: (1) collecting the overflow substance containing starch granule and other substance; (2) condensing the overflow substance to 10%-15%; (3) modifying the pH value to 3.0-3.5; (4) adding cellulose complex enzyme with its mass 0.5-1.0 permillage of that of solid in the condensed overflow substance, stirring at the temperature of 35-55 DEG C, keeping it for 1-3 hours; (5) injecting fresh water for eccentric cleaning when the overflow substance is separated to solid phase; (6) drying the super fine starch. The grain size of the super fine starch extracted by this method is 2-8mum, which amounts to 90%, the proportion of the grain size which is smaller than 11.11mum is 93.11%, and there is none larger than 18.98mum.

Description

technical field [0001] The invention relates to a process for extracting ultrafine starch from materials with low concentration, low starch content, relatively fine particles and difficult separation, which are produced in the production process of wheat starch. Background technique [0002] Because the superfine starch granules are relatively small, its uses are relatively wide, mainly in the following aspects: [0003] 1. It is used as the main filling material for blended biodegradable plastic films. Superfine starch can meet the requirements of relatively thin film production, control the maximum particle size of starch particles, improve the smoothness of the film surface, improve the heat sealing and printing properties, and make the film thickness detection more accurate. In addition, due to the good dispersibility of superfine starch, the addition amount can be increased during the film making process. Due to the large amount of starch added and the good dispersibil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/10
Inventor 黄继红王旭东潘守前张顺堂李瑞丰闫鑫胡小平王新春周阳田孝俊田晓燕周五中任伟谷丰张琳
Owner 河南莲花集团技术开发公司
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