A kind of preparation method of acetylated distarch adipate starch

A technology for acetylating distarch and adipate, applied in the field of starch production, can solve the problems of poor stability, inability to accurately determine the addition amount and effective amount, toxicity and the like

Active Publication Date: 2018-04-06
DONGGUAN DONGMEI FOOD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, it also has certain limitations: adipic anhydride has poor stability and is easy to absorb moisture to form adipic acid. In actual production, it is often impossible to accurately determine the addition amount and effective amount. In addition, adipic acid is toxic

Method used

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  • A kind of preparation method of acetylated distarch adipate starch

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Embodiment Construction

[0017] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 Shown, a kind of preparation method of acetylated distarch adipate starch comprises the following steps:

[0019] Step 1, put 1000 units of cassava starch into a reaction tank, add water and stir to prepare starch milk with a concentration greater than 30%. Too much reaction medium will dilute the reagent and reduce the reaction rate. If there is too little reaction medium, the starch milk will not stir. Easy to precipitate, and the reaction is uneven after the reagent is added;

[0020] Step 2, when the tapioca starch is mixed with water, 50 to 80 units of mass sodium chloride can be added, which is mainly used to improve the gelatinization temperature of the starch, and can also inhibit the swelling of the starch granules;

[0021] Step 2: Stir the starch milk. During the stirring process, lye...

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Abstract

The invention provides a preparation method of acetylated distarch adipate starch. The preparation method is characterized by comprising the following steps: preparing starch milk, adding alkaline liquor, stirring, adding oxalic anhydride and acetic anhydride for reaction after vacuumizing, washing, dehydrating and drying after neutralization, and discharging the materials. According to the preparation method of acetylated distarch adipate starch, oxalic anhydride is difficultly converted into oxalic acid by heating and vacuum conditions, and even partial oxalic anhydride which has been converted into oxalic acid also reacts to generate oxalic anhydride, thereby ensuring the efficient crosslinking reaction.

Description

technical field [0001] The invention relates to the technical field of starch production, in particular to a method for preparing acetylated distarch adipate starch. Background technique [0002] Our country is rich in cassava starch resources, the price of raw materials is low, and the branched chain content is as high as 83%. It is superior to corn starch in gelatinization temperature, viscosity, paste liquid transparency, taste and many other properties. raw material. However, the viscosity stability of cassava starch is poor, and the properties of acid resistance, heat resistance and shear resistance are difficult to meet the requirements of modern industry, which limits the application of cassava starch. Physical, chemical or enzymatic denaturation can effectively improve the performance defects of raw starch, such as insolubility in cold water and instability of starch paste under the action of acid, heat, and shear force, and add some functionality or introduce new c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/04
Inventor 罗静丽王凯娜刘秋凤梁肖容
Owner DONGGUAN DONGMEI FOOD
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