Method for preparing nano-scale rice starch

A rice starch and nano-scale technology, applied in food preparation, medical preparations of non-active ingredients, pharmaceutical formulas, etc., can solve the problems of long processing time, high energy consumption, high processing cost, etc., and achieve strong surface adsorption and affinity , easy to absorb and digest, smooth and delicate taste

Inactive Publication Date: 2010-11-10
NANCHANG UNIV
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  • 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

Embodiment 1

[0013] (1) Preparation of rice starch: first soak the broken rice in 0.5% aqueous sodium hydroxide solution for 24 hours by mass fraction, stir once every 6 hours, pour off the soaking liquid, pass the colloid mill after beating with a beater, and then use a mass fraction of After soaking in 0.5% sodium hydroxide aqueous solution for 24 hours, pour out the soaking solution. 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.

[0014] (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.

[0015] (3) Spray drying: Use a spray tower to spr...

Embodiment 2

[0020] (1) Preparation of rice starch: first soak the broken rice in 0.5% aqueous sodium hydroxide solution for 24 hours by mass fraction, stir once every 6 hours, pour off the soaking liquid, pass the colloid mill after beating with a beater, and then use a mass fraction of After soaking in 0.5% sodium hydroxide aqueous solution for 24 hours, pour out the soaking solution. 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.

[0021] (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.

[0022] (3) Spray drying: Use a spray tower to spr...

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PUM

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Abstract

The invention discloses a method for preparing nano-scale rice starch, which is characterized by comprising the following steps: (1) preparation of rice starch, (2) homogenizing treatment, (3) spray drying, (4) superfine crushing, (5) detection and (6) packing. The method has the advantages that: (1) the condition that the wet crushing is only widely applied in the beverage industry is changed by combining dry crushing and wet crushing; (2) the grain diameter of the rich starch prepared by the method can reach nano-scale; the rich starch has strong surface adsorption and affinity and good fragrance fixation, dispersibility and dissolubility, and is easily absorbed and digested in particular; the food prepared by using the nano-scale rice starch has smoother and more exquisite mouthfeel; the rich starch can be widely applied in the industries of medicaments, cosmetics and the like besides the food field; and (3) the method has simple production process, low cost and low environmental pollution, and is easy to realize industrialization.

Description

technical field [0001] The invention relates to a method for preparing rice starch, in particular to a method for preparing nanoscale rice 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 c...

Claims

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Application Information

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IPC IPC(8): C08B30/02A23L1/0522A61K47/36A23L29/212
Inventor 涂宗财刘成梅刘伟付桂明李金林李敏
Owner NANCHANG UNIV
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