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Diversification premixing method modified starch and producing method thereof

A modified starch and premixing technology, applied in the field of modified starch and its production, can solve the problems that the chemical modification method is not easy to realize, and achieve the effects of improving the reaction efficiency of etherification and esterification, short production cycle and high product stability

Inactive Publication Date: 2008-06-11
广西农垦明阳生化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] From the public literature, we can understand that the multivariate modified starch has added many new products to the original oxidized starch, enzyme-converted starch, cationic starch, phosphate starch, hydroxypropyl starch and some grafted copolymerized starches, but each The molecules of starches vary widely. In some starches, complex chemical denaturation methods such as oxidation, esterification, and grafting are not easy to achieve. Generally, denaturation can only be achieved through multi-step operations. Therefore, those skilled in the art can Different reactive groups, proportions and process conditions have developed a wide variety of products with special properties, making modified starch more functional. For example, in addition to being used as a papermaking additive, it can also be used as an industrial auxiliary for textiles and food. are gaining more and more attention from scientific researchers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Tapioca starch slurry, the depth is 1000mm, the slurry concentration is 18.5Be', and the starch content is 10 tons. ①Add 300kg NaCl to the tapioca starch slurry, stir for 20 minutes, add sodium hydroxide aqueous solution to adjust the pH value of the slurry to 9-11, add 5-10kg sodium trimetaphosphate and 300kg propylene oxide, heat up to 45-50 ℃ for denaturation reaction 7 -10h, then add 100-300kg sodium tripolyphosphate to continue the reaction for 1.5-2h, reduce the temperature of starch slurry to below 30℃, neutralize the pH value of the slurry with hydrochloric acid aqueous solution to 6.0-6.5, and then wash and other processes to obtain finished product A. ②Add sodium hydroxide aqueous solution to the tapioca starch slurry to adjust the pH value of the slurry to 8-9, add 200-400kg of sodium tripolyphosphate and stir for 30 minutes to react, and then add 100-200kg of vinyl acetate to react, and the reaction temperature is controlled at 40-45 ℃, the reaction time is ...

Embodiment 2

[0052] Potato starch slurry, the depth is 1200mm, the slurry concentration is 18.5Be', and the starch content is 10 tons. ①Add 400kg NaCl to the potato starch slurry, stir for 20 minutes, add sodium hydroxide aqueous solution to adjust the pH value of the slurry to 9-10, add 12kg sodium trimetaphosphate and 400kg propylene oxide, heat up to 45-50 ℃ for denaturation reaction for 7-8h Then add 200-400kg of sodium tripolyphosphate to continue the reaction for 1.5h, reduce the temperature of starch slurry to below 30℃, neutralize the pH value of the slurry with sulfuric acid aqueous solution to 6.0-6.5, and then go through washing and other processes to obtain finished product A. ②Add sodium hydroxide aqueous solution to the potato starch slurry to adjust the pH value of the slurry to 8-9, add 200-400kg of sodium tripolyphosphate and stir for 30 minutes to react, then add 150-200kg of vinyl acetate to react, and the reaction temperature is controlled at 40-45 ℃, the reaction time ...

Embodiment 3

[0054] Tapioca starch slurry, the depth is 1000mm, the slurry concentration is 18.5Be', and the starch content is 10 tons. ①Add 200kg sodium chloride and 200kg sodium sulfate to the tapioca starch slurry, stir for 20 minutes, add sodium hydroxide or potassium hydroxide aqueous solution to adjust the pH value of the slurry to 9-10, add 400kg propylene oxide, stir at room temperature for 20 minutes, heat up to 45-50℃, add 2-10kg epichlorohydrin for denaturation reaction for 7h, then add 100-300kg sodium tripolyphosphate to continue the reaction for 2h, reduce the temperature of starch slurry to 30℃, neutralize the pH value of the slurry with hydrochloric acid aqueous solution to 6.0- 6.5. After washing and other processes, finished product A is obtained. ②Add 100-200kg of solid sodium carbonate to the tapioca starch slurry and stir for 30 minutes, heat up to 40°C, add 50-200kg of sodium tripolyphosphate, stir for 20 minutes to react, then add 100-300kg of vinyl acetate to react,...

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Abstract

The invention discloses a diversification premixing modified starch and a relative production method, which premixes etherified-crosslink-esterified starch, esterified-esterified starch and esterified-crosslink starch which are produced independently in a certain ratio, to obtain the starch with good freeze stability, gel property, and water retention. The product supplies a new processing property for modified starch product, which can be applied for food, particularly for low-temperature meat product, to adhere, stuff and improve water retention. The invention has short production period, low energy consumption, simple operation and high product stability.

Description

technical field [0001] The present invention relates to a modified starch and a production method thereof. In particular, it can be used as a modified starch for food, textile, papermaking or daily industrial product additives. technical background [0002] With the development of food, textile, paper or daily industrial products, my country has started the industrial production of modified starch in the 1980s, and its products are basically one-time modified modified starch products, such as oxidized starch, acid-hydrolyzed starch, acetic acid Ester starch, phosphate ester starch, cross-linked starch, carboxymethyl starch, cationic starch, pregelatinized starch, etc., but in some industries and the manufacture of some high-end products, simple one-time modified starch products cannot meet the requirements, such as high-end starch. For textiles, paper or food, modified starch should have the characteristics of low gelatinization temperature, strong cohesion, stable viscosity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/04
Inventor 冯琳潘瑞坚韦爱芬梁著棋
Owner 广西农垦明阳生化有限公司
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