Preparation method of nano starch

A nano-starch and starch technology, applied in the biological field, can solve the problems of high technical requirements, high equipment requirements, and long time consumption, and achieve the effects of short time, convenient acquisition, and low cost

Inactive Publication Date: 2020-02-28
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The invention solves the technical problems of long time-consuming, high requirements for instruments and equipment, and high technical requirements in the traditional technology of preparing nano-starch granules in the background technology

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  • Preparation method of nano starch
  • Preparation method of nano starch

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The method of specific embodiment one of the present invention is as follows:

[0035] 1) Weigh 18g of ordinary cornstarch, prepare 100mL of 3.16M sulfuric acid solution, disperse all the starch into sulfuric acid and store in a 150mL beaker, and mix evenly with a magnetic stirrer at 500rpm;

[0036] 2) Use a water bath to preheat the starch-sulfuric acid suspension to 40°C, and keep stirring with a glass rod during the preheating process to prevent the starch from settling at the bottom of the solution;

[0037] 3) Fix the suspension under the horn of the ultrasonic cell disruptor, insert the horn into the page 4cm, insert the temperature sensor into the liquid surface, monitor the temperature in real time, and start the ultrasonic reaction; use the JYD-990L ultrasonic wave of Shanghai Zhixin Company For the disruptor, set the paramete...

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Abstract

The invention relates to a preparation method of nano starch. The method comprises the following steps: 1) preparing a starch suspension; 2) preheating the starch suspension; 3) carrying out ultrasonic reaction on the starch suspension; 4), cooling the starch suspension to room temperature, 5), adding sodium carbonate solid into the starch suspension until the starch solution is neutral, 6), filtering the starch suspension through filter paper and collecting an obtained filtrate, 7), centrifuging the filtrate and collecting precipitates, and 8), freeze-drying the precipitates to obtain the nano starch particles. The preparation method is rapid in nano starch preparation, high in efficiency, and low in cost.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a method for preparing nano starch. Background technique [0002] Starch is an abundant, cheap, non-toxic, naturally renewable, and degradable biopolymer produced by plants as a source of stored energy. Most native starch granules have limitations in processing quality, such as poor tolerance to processing conditions and post-processing functional properties. The use of native starch as a precursor to produce nanoscale starch has received widespread attention. Nanoparticles refer to particles with at least one dimension smaller than 1 micron but larger than a single molecule or atom. Due to their small size and large surface-to-volume ratio, nanoparticles exhibit special properties different from their precursor materials, such as reduced light scattering, high stability and solubility, and high biological barrier penetration. Processing native starch into nano-starch granules gre...

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Application Information

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IPC IPC(8): C08J3/12C08B31/06
CPCC08J3/12C08B31/06C08J2303/06
Inventor郭东伟朱传昊李津原张思亮宋志伟
OwnerNORTHWEST A & F UNIV