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Method for modifying corn starch with different amylose contents by air atmospheric pressure plasma jet

A technology of atmospheric pressure plasma and amylose content, applied in food science and other fields, can solve the problems of uneven processing and low yield of dry processing, and achieve improved application performance, increased water binding capacity, and increased water expansion volume Effect

Active Publication Date: 2018-12-07
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual operation, this method has uneven treatment, and the yield of dry treatment is not high, which shows that the plasma modified starch method needs further improvement

Method used

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  • Method for modifying corn starch with different amylose contents by air atmospheric pressure plasma jet
  • Method for modifying corn starch with different amylose contents by air atmospheric pressure plasma jet

Examples

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Effect test

Embodiment 1

[0024] The method for modifying cornstarch with different amylose content by the air atmospheric pressure plasma jet of the present embodiment comprises the following steps:

[0025] (1) Take waxy corn starch with a mass concentration of 5% as raw material, linear chain content of 0%, vortex mixing for 10 min, and then quickly spray it with air atmospheric pressure plasma jet for 1, 3, 5 and 7 min, Power 750 W, height 14.13 mm;

[0026] (2) After treatment, centrifuge at 3000 rpm for 10 min to obtain the precipitate;

[0027] (3) Take the precipitate, centrifuge with absolute ethanol to remove water, 3000 rpm, 10 min, and wash 3 times;

[0028] (4) The obtained precipitate was vacuum freeze-dried at -50°C for 1.5 h, ground, and passed through a 100-mesh standard sieve to obtain modified waxy corn starch.

[0029] It is measured that after the waxy cornstarch is treated by the atmospheric air plasma jet, the structural properties of the sample are reduced, the water binding a...

Embodiment 2

[0033] The method for modifying cornstarch with different amylose content by the air atmospheric pressure plasma jet of the present embodiment comprises the following steps:

[0034] (1) Take ordinary cornstarch with a mass concentration of 5% as raw material, with a linear chain content of 23-25%, vortex mixing for 10 minutes, and then quickly spray it with air atmospheric pressure plasma jet for 1, 3, 5 and 7 minutes, Power 750 W, height 14.13 mm;

[0035] (2) After treatment, centrifuge at 3000 rpm for 10 min to obtain the precipitate;

[0036] (3) Take the precipitate, centrifuge with absolute ethanol to remove water, 3000 rpm, 10 min, and wash 3 times;

[0037] (4) The precipitate was obtained, vacuum freeze-dried at -50°C for 1.5 h, ground, and passed through a 100-mesh standard sieve to obtain modified ordinary corn starch.

[0038] (5) It is measured that after normal-pressure air plasma jet treatment of ordinary corn starch, the structural properties of the sample d...

Embodiment 3

[0042] The method for modifying cornstarch with different amylose content by the air atmospheric pressure plasma jet of the present embodiment comprises the following steps:

[0043] (1) Take high-amylose corn starch with a mass concentration of 5% as raw material, with an amylose content of 63-67%, vortex mixing for 10 minutes, and then quickly spray it with air atmospheric pressure plasma jet for 1, 3, 5 and 7 minutes, Power 750 W, height 14.13 mm;

[0044] (2) After treatment, centrifuge at 3000 rpm for 10 min to obtain the precipitate;

[0045] (3) Take the precipitate, centrifuge with absolute ethanol to remove water, 3000 rpm, 10 min, and wash 3 times;

[0046] (4) The obtained precipitate was vacuum freeze-dried at -50°C for 1.5 h, ground, and passed through a 100-mesh standard sieve to obtain modified high-amylose corn starch.

[0047] It is measured that after the treatment of high-amylose corn starch by atmospheric air plasma jet, the structural properties of the sam...

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Abstract

The invention discloses a method for modifying corn starch with different amylose contents by air atmospheric pressure plasma jet. The method comprises preparing waxy corn starch, common corn starch and high amylase corn starch into starch emulsions having a mass concentration of 5-15%, directly treating the starch emulsions with an air atmospheric pressure plasma jet device for 1-7 minutes, centrifuging the starch emulsions to obtain precipitates, washing the precipitates for 3 times with absolute ethanol, and performing vacuum freeze drying to obtain modified starch. The method uses the airatmospheric pressure plasma jet technology to treat the three corn starch emulsions, and introduces some oxygen-containing polar groups into the corn starch for hydrophilicity improvement, mainly reflected in increase of water bonding ability and water expansion volumes, of the starch so as to further improve the practical application performance of the three kinds of corn starch. The method can also provide a new direction for starch modification for scholars who study the direction in the future, and provides more theoretical supports for the starch research field. The modified starch produced by the method can also be better applied to convenience food.

Description

technical field [0001] The invention belongs to the technical field of modified starch production, and in particular relates to a method for modifying cornstarch with different amylose content by an air normal-pressure plasma jet. Background technique [0002] In recent years, the use of plasma equipment to modify starch is an emerging environment-friendly physical modification technology, and its application in starch modification has attracted the attention of researchers. Starch itself has a wide range of sources and high yield, but starch itself has many application defects, such as cold water intolerance, high viscosity, low transparency, resistance to enzymes, etc. Therefore, the modification of starch has always been a general direction in the field of starch research. Modification The resulting starch has modified application properties and can be used in a variety of food and non-food industries. Plasma modification is an emerging non-thermophysical processing meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/12A23L29/30
CPCA23L29/30C08B30/12
Inventor 闫溢哲周亚萍牛斌刘延奇史苗苗杨留枝崔畅冯琳琳
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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