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Method for preparing environment-friendly modified starch containing sweet potato

A modified starch, environment-friendly technology, applied in the field of ultrasonic-mechanical activation solid-phase method to prepare environment-friendly modified starch including sweet potato, can solve the problems of low utilization rate of starch, difficult liquid phase control, long production cycle, etc., and achieve enzymatic hydrolysis activity. The effect of improvement, transparency improvement, and gelatinization temperature reduction

Inactive Publication Date: 2016-08-31
张莘蔓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an environment-friendly preparation method containing modified sweet potato starch to solve the problems of the prior art, such as complex preparation process, long cycle, high cost due to the difficulty of controlling the liquid phase involved in the reaction, and low utilization rate of starch. The method of the present invention overcomes The wet production (liquid phase condition) process is not easy to control, the degree of esterification is low, and the production cycle is long. The produced environmentally friendly sweet potato modified starch has film-forming properties, cohesiveness, anti-coagulation, transparency, Anti-aging, high utilization rate of starch, etc., can be used in thickeners, food additives, packaging materials and other fields

Method used

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preparation example Construction

[0026] In an embodiment, the environment-friendly type comprises the preparation method of modified sweet potato starch, comprising the following steps:

[0027] S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 130-145:3-5:3-4:1.1-1.2. The starch is sweet potato starch, lotus root starch, and mung bean starch. Composition, the mass ratio of sweet potato starch, lotus root starch, and mung bean starch is 4-5:2-3:1-2, the size of the starch is 60-80 mesh, and the concentration of the hydrochloric acid is 10%-12%. The uniformly mixed starch, oxalic acid, cinnamic acid, and hydrochloric acid are placed in an ultrasonic reactor, and pretreated for 5- 7min, obtained material A;

[0028] 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 material ball has...

Embodiment 1

[0032] An environment-friendly preparation method comprising sweet potato modified starch, comprising the following steps:

[0033]S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 130:3:3:1.1. The starch is a composition of sweet potato starch, lotus root starch, and mung bean starch. Sweet potato starch, lotus root starch 1. The mass ratio of mung bean starch is 4:2:1, the size of the starch is 80 mesh, and the concentration of the hydrochloric acid is 12%, put the mixed starch, oxalic acid, cinnamic acid, hydrochloric acid in the ultrasonic reactor , under the conditions of ultrasonic power of 500W, temperature of 50°C, and stirring speed of 400r / min, pretreatment for 7min to obtain material A;

[0034] 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 ball...

Embodiment 2

[0037] An environment-friendly preparation method comprising sweet potato modified starch, comprising the following steps:

[0038] S1: Mix starch, oxalic acid, cinnamic acid, and hydrochloric acid evenly in a mass ratio of 145:5:4:1.3. The starch is a composition of sweet potato starch, lotus root starch, and mung bean starch. Sweet potato starch, lotus root starch 1. The mass ratio of mung bean starch is 5:3:2, 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, hydrochloric acid in the ultrasonic reactor , under the conditions of ultrasonic power of 650W, temperature of 55°C, and stirring speed of 200r / min, pretreatment for 5min to obtain material A;

[0039] 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 materi...

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Abstract

The invention discloses a method for preparing environment-friendly modified starch containing sweet potato and belongs to the technical field of modified starch preparation. The environment-friendly modified starch containing sweet potato is prepared through ultrasonic pretreatment, ultrasonic-mechanical esterification, washing and drying. The defects of wet production under the liquid-phase condition that process is hard to control, esterification degree is low, and production cycle is long are overcome. The prepared environment-friendly modified starch containing sweet potato has an esterification degree of 1.2-1.5, whiteness of 88-92, moisture content of 4-6%, water absorption rate of 2-4%, density of 0.9-1.3 g / cm3 and starch utilization rate of 95.5-95.9%, meets the stipulation in GB / T12097, GB / T22427.6-2008 and GB / T12087-2008 for physical and chemical property indexes of starch, and has the advantages of being high in film-forming property, cohesiveness, anti-coagulation property, aging resistance, starch utilization rate and the like.

Description

technical field [0001] The invention belongs to the technical field of modified starch preparation, and in particular relates to an ultrasonic-mechanical activation solid-phase method for preparing environmentally friendly modified starch containing sweet potato. 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 m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04C08B31/06
CPCC08B31/04C08B31/06
Inventor 张莘蔓
Owner 张莘蔓
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