Process for producing cation starch by dry method

Abstract

The dry process of producing cationic starch features that caustic soda is dissolved in the mixture of alcohol and water. Inside the mixed alcohol and water solution of caustic soda, the starch will not be gelatinized, even in high concentration. Adding caustic soda makes the reaction phase loose without forming grains, and the water content in the reaction phase may be regulated through altering the ratio of water to alcohol. The production process has high reaction efficiency, low cost, high whiteness and fineness of the produced cationic starch, low soluble starch content, and high viscosity stability. The present invention may be applied widely in starch processing field.

Description

technical field [0001] The invention relates to the technical field of food processing, specifically a production process for producing cationic starch by dry method Background technique [0002] At present, there are two forms of adding caustic soda in dry production of cationic starch: [0003] 1. Add caustic soda directly to the starch [0004] Although this method will not cause the gelatinization of starch, but because the solid base is added, the solid base cannot fully penetrate into the interior of the starch molecules, so the starch cannot be activated to the greatest extent, resulting in a relatively low reaction efficiency of cationic starch. costs are greatly increased. Moreover, it is difficult to achieve a very uniform degree of mixing between solids and solids, so the reaction is also uneven, resulting in unstable product quality. [0005] 2. Add a relatively dilute alkali (about 2% concentration) to the starch [0006] Although this method can fully penet...

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Problems solved by technology

[0006] Although this method can fully penetrate the alkali into the starch molecules, it is easy to cause the gelatinization of the starch, and there will be many small particles, which will affect the quality of the product, and if the amount of alkali added is too large, it will The water content of the reaction phase is quite high, which is not suitable for dry reaction and must be pre-dried, thus increasing the production cost