Pre-gelatinized starch and preparation method thereof

A pregelatinized starch and pregelatinization technology, which is applied in the field of pregelatinized starch and its preparation, can solve the problems of pregelatinized starch production decline, low product solubility, high product viscosity, etc., and achieve low feed water content, Convenient on-site use and moderate product viscosity

Inactive Publication Date: 2014-04-23
KAIPING LIANJI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Potato flour and cassava flour are the two main raw materials for the production of this product, but most of the world’s dominant is potato starch. In order to obtain a stable and reliable supply of potato starch in drilling applications, the current problem is that it must cooperate with the fast food industry. competition, and the fast food industry occupies an important position in people's lives. When the supply of potato starch is in short supply, the fast food industry often takes priority, resulting in a decline in the production of pregelatinized star

Method used

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  • Pre-gelatinized starch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] A pregelatinized starch, by weight percentage, comprising:

[0049] Pregelatinized tapioca starch 88.00

[0050] 2-Methyl-4-isothiazolin-3-one (MI) 0.5%

[0051] 5-Chloro-2-methyl-4-isothiazolin-3-one (CMI) 0.5%

[0052] The remainder is water.

[0053] Wherein, the above-mentioned pregelatinized starch has the following properties:

[0054] performance

[0055] A method for preparing above-mentioned pregelatinized starch, comprising the following steps:

[0056] (1) Spray water into the starch, introduce it into the extruder for heating and pressure, press out from the pores, expand, evaporate the water, and dry;

[0057] (2) Pulverize after natural cooling, add bactericide, mix and pulverize to obtain the product of the present invention.

[0058] Wherein, in the step (1), heating to 120-140 ° C, pressurizing to 30-50 × 10 5 Pa; the diameter of the pores in the step (1) is 0.8 mm.

[0059] Wherein, in the step (1), the spray prefabri...

Example Embodiment

[0060] Example 2

[0061] A pregelatinized starch, by weight percentage, comprising:

[0062] Pregelatinized tapioca starch 93.00

[0063] 2-Methyl-4-isothiazolin-3-one (MI) 0.1%

[0064] 5-Chloro-2-methyl-4-isothiazolin-3-one (CMI) 0.1%

[0065] The remainder is water.

[0066] A method for preparing above-mentioned pregelatinized starch, comprising the following steps:

[0067] (1) Spray water into the starch, introduce it into the extruder for heating and pressure, press out from the pores, expand, evaporate the water, and dry;

[0068] (2) Pulverize after natural cooling, add bactericide, mix and pulverize to obtain the product of the present invention.

[0069] Wherein, in the step (1), heating to 120-140 ° C, pressurizing to 30-50 × 10 5 Pa; the diameter of the pores in the step (1) is 0.6 mm.

[0070] Wherein, in the step (1), the spray prefabricated wet powder technology is used to spray water into the starch; in the step (1), the wet powder is extruded into the...

Example Embodiment

[0071] Example 3

[0072] A pregelatinized starch, by weight percentage, comprising:

[0073] Pregelatinized tapioca starch 99.00

[0074] 2-Methyl-4-isothiazolin-3-one (MI) 0.1%

[0075] 5-Chloro-2-methyl-4-isothiazolin-3-one (CMI) 0.1%

[0076] The remainder is water.

[0077] Wherein, the above-mentioned pregelatinized starch has the following properties:

[0078] performance

[0079] A method for preparing above-mentioned pregelatinized starch, comprising the following steps:

[0080] (1) Spray water into the starch, introduce it into the extruder for heating and pressure, press out from the pores, expand, evaporate the water, and dry;

[0081] (2) Pulverize after natural cooling, add bactericide, mix and pulverize to obtain the product of the present invention.

[0082] Wherein, in the step (1), heating to 120-140 ° C, pressurizing to 30-50 × 10 5 Pa; the diameter of the pores in the step (1) is 0.4 mm.

[0083] Wherein, in the step (1), the spray prefab...

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Abstract

The invention provides pre-gelatinized starch and a preparation method thereof. The pre-gelatinized starch comprises the following components in percentage by weight: 87.00-99% of pre-gelatinized tapioca starch, 0.1-1% of 2-methyl-4-isothiazolin-3-one (MI), 0.1-1% of 5-chloro-2-methyl-4-isothiazolin-3-one (CMI) and the balance of water. The product provided by the invention has the characteristic of perfect liquidity like fine sand, and the characteristic is very convenient to use on the site; although as a powdery product, the product does not generate dust and avoids harm to the physical health of workers on the site; after being added into water or slurry, the product can be automatically and uniformly dispersed and quickly dissolved, and the phenomenon of caking or fish eyes is avoided even without stirring; the requirement on the water loss of 4% salt water and saturated salt water slurry at normal temperature is met; the temperature resistance is good, and the acceptable temperature can reach 120 DEG C in 4% NaCl and saturated salt water slurry; and the product is not a toxic substance and does not have oxidability, corrosivity and radioactivity.

Description

technical field [0001] The invention relates to a pregelatinized starch and a preparation method thereof. Background technique [0002] Pregelatinized starch (PGTS) is a white powder, which is synthesized by α-modification of starch, also known as α-starch, odorless, non-toxic, and hygroscopic. It dissolves in cold water and becomes a translucent stable colloid, insoluble in ethanol, ether and chloroform, and is widely used in oil drilling, food, foundry, textile, papermaking, feed and other industries. Pregelatinized starch is often used in oil drilling to prevent viscosity increase and reduce water loss. As a mud fluid loss reducer, it has the advantages of high quality and low price, easy biodegradation, salt resistance, and calcium resistance. Green drilling fluid materials for environmentally friendly drilling operations. [0003] Potato flour and cassava flour are the two main raw materials for the production of this product, but most of the world’s dominant is potat...

Claims

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Application Information

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IPC IPC(8): C08B30/12
Inventor 关英伟
Owner KAIPING LIANJI CHEM
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