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Etherified-cross linked-pregelated ternary composite modified starch, its preparing process and application

A ternary technology of compound modified starch and pregelatinization is applied in the field of starch modification to achieve the effect of scientific and practical process design and easy popularization and application.

Inactive Publication Date: 2006-08-09
JIANGNAN UNIV
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Problems solved by technology

Through literature search, there are literature reports on the combination of starch pregelatinization, etherification, and cross-linking for binary denaturation, but there is no domestic and foreign research on the organic combination of starch etherification, cross-linking, and pre-gelatinization. literature report

Method used

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  • Etherified-cross linked-pregelated ternary composite modified starch, its preparing process and application

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Embodiment 1

[0027] Add water to 800g of starch and slurry into starch milk with a mass fraction of 40% (dry basis), add catalyst and expansion inhibitor according to the above-mentioned proportion of the instructions, then add 64g of propylene oxide, and control the temperature at 45°C in a closed container. -50°C, pH10.5-12.0, react for 8-24h, neutralize, wash, adjust the slurry to 40%, control the temperature at 25-30°C, adjust the pH7.5-9.0 with 3% hydrochloric acid solution, drop while stirring Add 36g of adipic acid and acetic anhydride mixture, add dropwise for 0.5-4h, neutralize, wash, adjust the slurry until 40% of the upper roller is pregelatinized, the temperature is 110°C-150°C, the time is 2-8min, and the product is obtained .

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Abstract

The invention discloses an etherified - cross bond - pregelatinized ternary composite modified starch, its preparing process and application, wherein the product is prepared through the simultaneous process of etherification, cross bonding and pre-gelatinization denaturization to the starch, the product can be used for thickening and stabilizing the high acid, high salt and frozen food in food-processing industry, and also as the sizing agent in paper making and textile industry.

Description

technical field [0001] An etherification-crosslinking-pregelatinization ternary compound modified starch and its preparation method and application belong to the technical field of starch modification. Background technique [0002] In China, there have been nearly 20 years of systematic research on the development and research of modified starch, and most of the modification methods used in starch are single denaturation or double denaturation. Through literature search, there are literature reports on the combination of starch pregelatinization, etherification, and cross-linking for binary denaturation, but there is no domestic and foreign research on the organic combination of starch etherification, cross-linking, and pre-gelatinization. Literature reports. Contents of the invention [0003] The object of the present invention is to provide an etherified-crosslinked-pregelatinized ternary compound modified starch and its preparation method and application. By adding a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/08
Inventor 张燕萍顾正彪洪雁
Owner JIANGNAN UNIV
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