Preparation method of environment-friendly modified starch

A modified starch, environment-friendly technology, applied in the field of ultrasonic-mechanical activation solid-phase method for preparing environment-friendly modified starch, can solve the problems of difficult liquid phase control, low starch utilization rate, low degree of esterification, etc. The effect of improving the solution activity and reducing the gelatinization temperature

Inactive Publication Date: 2016-11-16
张莘蔓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing environmentally friendly modified starch to solve the problems of the prior art, such as complex preparation process, long cycle, high cost due to difficult control of the liquid phase involved in the reaction, and low starch utilization rate. The method of the invention overcomes the problems of wet The production process (liquid phase conditions) is not easy to control, the degree of esterification is low, and the production cycle is long. With the advantages of high starch utilization rate, it can be used in thickeners, food additives, packaging materials and other fields

Method used

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Examples

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preparation example Construction

[0028] In an embodiment, the preparation method of environment-friendly modified starch comprises the following steps:

[0029] S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 120-150:3-5:3-4:1.1-1.3, and the starches are mung bean starch, potato starch, and wheat starch , sweet potato starch, lotus root starch, the size of the starch is 60-80 mesh, the concentration of the hydrochloric acid is 10%-12%, and the uniformly mixed starch, oxalic acid, cinnamic acid, hydrochloric acid Put it in an ultrasonic reactor, and pretreat it for 5-10 minutes under the conditions of ultrasonic power of 350-650W, temperature of 35-55°C, and stirring speed of 200-400r / min to obtain material A;

[0030] S2: Put the material A prepared in step S1 into a ball mill, and control the bulk volume ratio of the reaction material to the material ball to be 1-1.2g:1.5-2.5ml, and the material ball is one of aluminum alloy balls and quartz balls The diameter of ...

Embodiment 1

[0034] A preparation method of environment-friendly modified starch, comprising the following steps:

[0035]S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 120:3:3:1.1. The starch is a composition of wheat starch, sweet potato starch, and lotus root starch. Wheat starch, The mass ratio of sweet potato starch and lotus root starch is 3:2:1, the size of the starch is 80 mesh, and the concentration of the hydrochloric acid is 12%. Put the uniformly mixed starch, oxalic acid, cinnamic acid, and hydrochloric acid into the ultrasonic reaction In the device, the ultrasonic power is 350W, the temperature is 35 ℃, and the stirring speed is 400r / min. The pretreatment is 10min, and the material A is obtained;

[0036] S2: Put the material A prepared in step S1 into a ball mill, control the bulk volume ratio of the reaction material and the material ball to 1g:1.5ml, the material ball is an aluminum alloy ball, and the diameter of the material ...

Embodiment 2

[0039] A preparation method of environment-friendly modified starch, comprising the following steps:

[0040] S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 150:5:4:1.3. The starch is a composition of wheat starch, sweet potato starch, and lotus root starch. Wheat starch, The mass ratio of sweet potato starch and lotus root starch is 5:4:2, the size of the starch is 60 mesh, and the concentration of the hydrochloric acid is 10%. Put the uniformly mixed starch, oxalic acid, cinnamic acid, and hydrochloric acid into the ultrasonic reaction In the device, the ultrasonic power is 650W, the temperature is 55 ℃, and the stirring speed is 200r / min. The pretreatment is 5min, and the material A is obtained;

[0041] S2: put the material A prepared in step S1 into a ball mill, control the bulk volume ratio of the reaction material and the material ball to be 1.2g:2.5ml, the material ball is a quartz ball, and the diameter of the material ball...

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Abstract

The invention discloses a preparation method of environment-friendly modified starch, and belongs to the technical field of environment-friendly modified starch preparation. The environment-friendly modified starch is prepared through the steps of ultrasonic pretreatment, ultrasonic-mechanical esterification, washing, drying and the like. The problems that a wet method production (liquid phase condition) process is not easy to control, low in esterification degree, long in production cycle and the like are solved. The prepared environment-friendly modified starch has the esterification degree of 0.9-1.5, the whiteness of 87-94, the water content of 3-6%, the water absorption rate of 2-4%, the density of 0.9-1.2 g/cm<3> and the starch utilization rate of 95.2-96%, conforms to the indexes of Chinese standards GB/T12097, GB/T22427.6-2008 and GB/T12087-2008 for physical performance of starch and has the advantages of being high in film forming performance, coagulation resistance, transparency, anti-ageing performance, starch utilization rate and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of modified starch, and in particular relates to a method for preparing environment-friendly modified starch by an ultrasonic-mechanical activation solid-phase method. Background technique [0002] Starch ester is an important type of modified starch, which refers to a type of modified starch obtained by esterifying the hydroxyl groups in the starch structure with organic acids or inorganic acids. The current starch esterification products mainly include starch acetate, starch phosphate, starch xanthate, starch nitrate and other short-chain organic acids or inorganic acid esters, as well as starch stearate and starch octenyl succinate. Isochorectin starch esters. However, there are few studies on the combined denaturation of starch diesterification. Although monoesterified starch has better processing performance than native starch, it often has single performance. In order to meet the highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04
CPCC08B31/04
Inventor 张莘蔓
Owner 张莘蔓
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