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Porous starch

A technology of porous starch and sweet potato starch, applied in the direction of fermentation, etc., can solve the problems of high production cost, limited acid method application, limited adsorption capacity, etc., and achieve the effect of low price and abundant raw materials

Inactive Publication Date: 2016-03-30
韦师
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are mainly the following methods for preparing porous starch: one is physical methods, such as ultrasonic irradiation or spraying process; the other is mechanical methods, such as mechanical impact such as ball milling; the third is biochemical methods, such as alcohol denaturation or acid Hydrolysis, in the above several methods, the production cost of mechanical impact methods such as ultrasonic irradiation and ball milling process is high, and it is not easy to realize industrialization; while the spray method and alcohol denaturation form a solid endpolymer sphere, and the adsorption effect is only Occurs in the rough surface, the adsorption capacity is limited, and the application prospect is not optimistic; the reaction rate of the acid hydrolysis method is slow at the gelatinization temperature, the degradation is uneven, the randomness is strong, and it is not easy to form pores, which limits the application of the acid method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 5g of sweet potato starch into a beaker, add 100ml of distilled water, and place it in a water bath heating device equipped with a mechanical stirrer. Then add 1mL sodium lauryl sulfate to the container, stir to dissolve evenly, heat the system, when the temperature reaches 45°C, add 0.05 glucoamylase and 0.05α-amylase, and stir to make it fully, After reacting for 5 hours, add 0.05 g of glutaric acid, stir well, then pour into acetone, wash the precipitate with water, and finally vacuum dry to obtain the finished product.

Embodiment 2

[0026] Put 10g of sweet potato starch into a beaker, add 200ml of distilled water, and place it in a water bath heating device equipped with a mechanical stirrer. Then add 2mL sodium lauryl sulfate to the container, stir to dissolve evenly, heat the system, when the temperature reaches 40°C, add 0.1 glucoamylase and 0.1α-amylase, and stir to make it fully, After reacting for 5 hours, add 0.1 g of glutaric acid, stir well, then pour into acetone, wash the precipitate with water, and finally vacuum dry to obtain the finished product.

Embodiment 3

[0028] Put 20g of sweet potato starch into a beaker, add 300ml of distilled water, and place it in a water bath heating device equipped with a mechanical stirrer. Then add 4mL sodium lauryl sulfate to the container, stir to dissolve evenly, heat the system, when the temperature reaches 35°C, add 0.05 glucoamylase and 0.05α-amylase, and stir to make it fully, After reacting for 10 hours, add 0.2 g of glutaric acid, stir well, then pour into acetone, wash the precipitate with water, and finally vacuum dry to obtain the finished product.

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Abstract

The invention provides porous starch and a preparation method thereof. Since the sweet potato starch content is as high as about 30%, sweet potatoes serve as a raw material, an enzymatic degradation process is adopted, and by adjusting preparation process conditions and adding appropriate additives to control starch microsphere grain sizes and micropore structures, the porous sweet potato starch is prepared. The porous starch is low in production cost and easy to industrialize.

Description

technical field [0001] The invention relates to a porous starch, in particular to a porous sweet potato starch and a preparation method thereof, belonging to the field of chemical synthesis. Background technique [0002] Starch is a natural high-molecular carbohydrate synthesized from carbon dioxide and water through photosynthesis in plant tissues, and is a polyglucose composed of α-D-hexacyclic glucose. It widely exists in plant cell tissues and is the main component of green plant fruits, seeds, tubers and roots. When starch is used as an adsorbent, natural starch granules rely on the weak valence of atoms or atomic groups on the surface of granules to generate adsorption force to adsorb substances. The adsorbate is sucked into the inner wall of the cavity, and the adsorption is firmer, so that the adsorbate is not easy to detach. [0003] Porous starch is a kind of modified starch, also known as microporous starch, which is a porous honeycomb product formed by the acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/20C12P19/14C12P19/04
CPCC12P19/04C12P19/14C12P19/20
Inventor 韦师
Owner 韦师
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