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Preparation method of starch nanospheres

A starch nanometer and microsphere technology, applied in the food field, can solve the problems of low yield and long preparation time, and achieve the effects of simple operation, uniform particle size and no immunogenicity

Inactive Publication Date: 2018-03-06
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of nano-starch mainly contain the following methods: (1) hydrolysis method, which dissolves the amorphous region of starch granules by acid or enzyme to obtain starch nanocrystals, and its disadvantage is that the preparation time is long and the yield is low; Co-precipitation method, the method is simple and can obtain nano-starch with low crystallinity, which is used to prepare transparent and high-strength starch film, but requires the use of chemical reagents

Method used

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The invention provides a kind of preparation method of starch nano microsphere, comprises the following steps:

[0015] Step 1: configure starch solution;

[0016] Step 2: adopt high-speed jet method to process the starch solution gained in step 1, and collect the processed sample;

[0017] Step 3: The sample obtained in step 2 is spray-dried, and the sample obtained by spray-drying is starch nano-microspheres.

[0018] Further, in the method for preparing starch nanomicrospheres as described above, the mass concentration of the starch solution in step 1 is 2-10%.

[0019] Specifically, the present invention uses a high-speed jet method to process the starch solution obtained in step 1, so that the starch granules of the μm level can be changed into those of the nm level. In addition, the mass concentration of the starch solution of the present invention is 2-10%. If the concentration is too low, the amount of treatment is too small, and the concentration is too high....

Embodiment 1

[0023] Weigh 100g of early indica rice starch, add 1L of deionized water at normal temperature, stir and dissolve, then use a disperser to disperse at a speed of 13500rpm for 3 minutes to completely and evenly disperse the original starch granules; The solution was treated 10 times, and the sample was collected; it was dried by spray drying, the rotation speed of the centrifugal physical and chemical disc was 5000r / min, the inlet and outlet air temperatures were 110°C and 90°C, respectively, and the pressure of the compressed air was 0.3Mpa. The sample obtained by spray drying is starch nano microsphere.

[0024] Ultrasonic treatment can cause certain damage to the structure of starch granules, contribute to the formation of nanoparticles, and it is easier to disperse under stirring, which can effectively reduce the particle size of the product, increase the surface area in contact with the crosslinking agent, and improve the reaction efficiency. The reaction time is shortened...

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Abstract

The invention provides a preparation method of starch nanospheres. The preparation method comprises the following steps: step 1, preparing a starch solution; step 2, treating the starch solution obtained in the step 1 by adopting a high-speed jet method, and collecting treated samples; and step 3, carrying out spray drying on the samples obtained in the step 2, wherein the samples obtained after the spray drying are the starch nanospheres. The prepared starch nanospheres have the average particle size of 50-500nm and the dispersion coefficient less than 0.3. In the preparation process of the starch nanospheres, no stabilizer or emulsifier is used, so that environmental friendliness is realized, and the preparation efficiency is greatly improved as the high-speed jet method is adopted; meanwhile, the prepared starch nanospheres have uniform particle size, biocompatibility, no toxicity and no immunogenicity and are stable in storage. The preparation method provided by the invention is simple and low in cost.

Description

technical field [0001] The invention relates to the technical field of food, in particular to a method for preparing starch nanospheres. Background technique [0002] Starch is the most important food source for human beings, and it has good renewable and biodegradable properties. Nanoscale rice starch has unique physical and chemical properties, such as good dispersibility, adsorption, solubility, and is easily absorbed and digested by the human body. It can be used in cosmetic powder, photographic paper powder, paper sizing, candy coating and tablet excipients. etc., which have broad application prospects in the fields of polymer materials and drug carriers. At present, the preparation methods of nano-starch mainly contain the following methods: (1) hydrolysis method, which dissolves the amorphous region of starch granules by acid or enzyme to obtain starch nanocrystals, and its disadvantage is that the preparation time is long and the yield is low; Co-precipitation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08L3/02
CPCC08J3/122C08J2303/02
Inventor 符珍林莹任民红张露尹秀华
Owner GUANGXI UNIV