Method for preparing nano-class rice starch

A rice starch, nano-scale technology, applied in the field of nano-scale starch preparation, can solve the problems of difficult to reach the nano-scale, high processing cost, narrow application range, etc., achieve strong surface adsorption and affinity, low cost, easy to absorb and digest Effect

Inactive Publication Date: 2007-08-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The production method of starch miniaturization has multiple, and existing production method has following shortcoming: 1, chemical synthesis method, as the nano-starch particle of inverse microemulsion polymerization synthesis, although can make micron, submicron or even nanometer starch powder, but the output is low, the processing cost is high, and the application range is narrow; 2. Ball mill crushing, because the particle size of starch is less than 20 μm, its efficiency is low, energy consumption is large, and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0008] Example 1

[0009] (1) Preparation of rice starch: first soak the broken rice in 0.5% sodium hydroxide aqueous solution for 24 hours, stir it every 6 hours, pour off the soaking liquid, pass the colloid mill after beating with a beater, and then use 0.5% sodium hydroxide aqueous solution Pour off the soaking solution after soaking for 24 hours. Add clean water, centrifuge, pour off the supernatant, and repeat the washing several times; after adding clean water for the last time, adjust the pH value to neutral, centrifuge, and the resulting precipitate is rice starch.

[0010] (2) Homogenization treatment: first-level homogenization: use a nanometer ultra-high pressure homogenizer to homogenize the prepared rice starch slurry at 20MPa; second-level homogenization: use the rice starch slurry after the first-level homogenization treatment The micro-jet homogenizer performs homogenization at 100MPa.

[0011] (3) Spray drying: A small spray tower is used to spray dry the m...

Example Embodiment

[0015] Example 2

[0016] (1) Preparation of rice starch: first soak the broken rice in 0.5% sodium hydroxide aqueous solution for 24 hours, stir it every 6 hours, pour off the soaking liquid, pass the colloid mill after beating with a beater, and then use 0.5% sodium hydroxide aqueous solution Pour off the soaking solution after soaking for 24 hours. Add clean water, centrifuge, pour off the supernatant, and repeat the washing several times; after adding clean water for the last time, adjust the pH value to neutral, centrifuge, and the resulting precipitate is rice starch.

[0017] (2) Homogenization treatment: first-level homogenization: use a nanometer ultra-high pressure homogenizer to homogenize the prepared rice starch slurry at 80MPa; second-level homogenization: use the rice starch slurry after the first-level homogenization treatment The micro-jet homogenizer performs homogenization at 180MPa.

[0018] (3) Spray drying: A small spray tower is used to spray dry the m...

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PUM

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Abstract

The invention discloses a making method of nanometer-grade rice starch through hyperhigh pressure homogeneous and hyperfine grinding method, which is characterized by the following: 1. combining dry method grinding and wet method grinding method; changing wet grinding method for drinking industrial condition widely; 2. making the grain size of rice starch reach nanometer grade with strong surface adsorption affinity and dispersion and solubility; 3. simplifying manufacturing technique; reducing cost with little environmental pollution.

Description

technical field [0001] The invention relates to a preparation method of nanometer starch. Background technique [0002] The production method of starch miniaturization has multiple, and existing production method has following shortcoming: 1, chemical synthesis method, as the nano-starch particle of inverse microemulsion polymerization synthesis, although can make micron, submicron or even nanometer 2. Ball mill crushing, because the particle size of starch is less than 20 μm, its efficiency is low, energy consumption is large, and processing time is long. Moreover, it is difficult to crush starch with a ball mill, and it is difficult to reach the nanometer level, even if it is, it is only a small part; 3. When the starch powder is crushed by a supersonic jet mill, when the starch powder is less than 1 μm, it cannot be sieved, and the granularity requirement cannot be reached after one crushing. The powder has to be crushed repeatedly, and because of the need for air source...

Claims

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Application Information

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IPC IPC(8): C08B30/00
Inventor 涂宗财刘成梅刘伟付桂明李敏
Owner NANCHANG UNIV
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