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Starch nanoparticles prepared by jet cavitation assisted enzymolysis and preparation method and application

A starch nano-assisted enzymatic hydrolysis technology, which is applied in the field of starch industry, can solve the problems of long preparation time of starch nanoparticles, unsuitability for industrial production, complex preparation process, etc., and achieve the effect of high efficiency, environmental protection, low price and energy saving in the production process

Active Publication Date: 2022-07-19
SHENYANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems such as long preparation time of starch nanoparticles, complex preparation process, unsuitability for industrial production, and environmental pollution, the present invention provides a starch nanoparticle prepared by jet cavitation-assisted enzymolysis, its preparation method and application, and consumes The time is short, the process is simple and no chemical reagents are used, and the obtained product presents a nano-scale spherical shape with a particle size ranging from 50 to 300nm

Method used

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  • Starch nanoparticles prepared by jet cavitation assisted enzymolysis and preparation method and application
  • Starch nanoparticles prepared by jet cavitation assisted enzymolysis and preparation method and application

Examples

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Effect test

Embodiment 1

[0050] The potato starch and distilled water were mixed at a ratio of 1:2, and the starch suspension was prepared by magnetic stirring at room temperature for 30 min. 100 mL of starch suspension was subjected to jet cavitation treatment for 5 minutes at a temperature of 30°C and normal pressure. Put the starch suspension after jet cavitation into a 45°C oven to dry, pulverize, and pass through a 100-mesh sieve. Take 2 g of the dried potato starch sample and mix it with 20 mL of distilled water to form a 10% starch suspension, stir and gelatinize in a boiling water bath for 30 min, cool down to 60 °C, add 20 mL of acetic acid-sodium acetate buffer, add pullulan The enzyme was hydrolyzed for 3 hours under the appropriate reaction conditions. The amount of enzyme added was 5U / g, the temperature of the hydrolysis was 55°C, and the pH value of the hydrolysis was 4.5. After that, the enzyme was deactivated in a boiling water bath for 30 minutes, then placed in a 45°C oven for drying...

Embodiment 2

[0052] The potato starch and distilled water were mixed at a ratio of 1:2, and the starch suspension was prepared by magnetic stirring at room temperature for 30 min. 100 mL of starch suspension was subjected to jet cavitation treatment for 5 minutes at a temperature of 30°C and normal pressure. Put the starch suspension after jet cavitation into a 45°C oven to dry, pulverize, and pass through a 100-mesh sieve. Take 2 g of the dried potato starch sample and mix it with 20 mL of distilled water to form a 10% starch suspension, stir and gelatinize in a boiling water bath for 30 min, cool down to 60 °C, add 20 mL of acetic acid-sodium acetate buffer, add pullulan The enzyme was hydrolyzed for 3 hours under the enzymatic suitable reaction conditions. The amount of enzyme added was 8 U / g, the enzymatic hydrolysis temperature was 60 °C, and the pH value of the enzymatic hydrolysis was 4.5. After that, the enzyme was deactivated in a boiling water bath for 30 min, put into a 45 °C ov...

Embodiment 3

[0054] The potato starch and distilled water were mixed at a ratio of 1:2, and the starch suspension was prepared by magnetic stirring at room temperature for 30 min. 100 mL of starch suspension was subjected to jet cavitation treatment for 5 minutes at a temperature of 30°C and normal pressure. Put the starch suspension after jet cavitation into a 45°C oven to dry, pulverize, and pass through a 100-mesh sieve. Take 2 g of the dried potato starch sample and mix it with 20 mL of distilled water to form a 10% starch suspension, stir and gelatinize under boiling water bath conditions for 30 min, cool down to 60 °C, add 20 mL of acetic acid-sodium acetate buffer, add ordinary Lulanase was enzymatically hydrolyzed under suitable reaction conditions for 2 hours, the amount of enzyme added was 4U / g, the enzymatic hydrolysis temperature was 60 °C, the enzymatic hydrolysis pH was 4.5, and then the enzyme was inactivated in a boiling water bath for 30 min. Put it into a 45°C oven for d...

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Abstract

The invention belongs to the technical field of starch industry, and specifically provides starch nanoparticles prepared by jet cavitation-assisted enzymatic hydrolysis, a preparation method and application thereof, and the starch nanoparticles are prepared by using jet cavitation combined with enzymatic hydrolysis. Jet cavitation will generate micro-jets and shock waves, which will produce strong stirring and impact crushing in the liquid. Therefore, the use of jet cavitation can break starch particles. Application of jet cavitation combined with enzymolysis, compared with the method of simple acid hydrolysis and enzymolysis-assisted acid hydrolysis to prepare starch nanoparticles, the preparation time is shortened, the process is simple, green and environmental protection, the product is nano-spherical, and the particle size is in the range of 50-300nm . At present, starch nanoparticles have been widely used in various biomedical and industrial applications. They can be used as carriers to load active ingredients, prepare starch nanofilms, etc., increase the use of starch, and promote the development of the starch industry.

Description

technical field [0001] The invention belongs to the technical field of starch industry, and specifically provides starch nanoparticles prepared by jet cavitation-assisted enzymatic hydrolysis, a preparation method and application thereof, which shortens the preparation time and simplifies the preparation process. Background technique [0002] Starch is a natural, renewable, biodegradable polymer with low price and abundant storage. my country is a big agricultural country, and the output of various types of starch is relatively high. However, at this stage, starch processing enterprises in my country generally have low technical content, single product structure and relatively low added value. At present, starch nanoparticles have been used in the fields of food additives, fillers, drug carriers, emulsifiers, adhesives, biodegradable composite materials and enhancers. Therefore, the research and development of starch nanoparticles can increase the use of starch and improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08J5/18C08B30/12C08L3/02
CPCC08J3/12C08J5/18C08J2303/02
Inventor 李苏红鲍琪琪杨强李拖平熊梓涵
Owner SHENYANG AGRI UNIV
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