Process for producing low viscosity phosphate ester starch by new dry method

Abstract

The present invention relates to dry process of producing low viscosity phosphate ester starch, and features that starch, NaHPO4.12H2O, NaHPO2.2H2O, urea, hydrochloric acid, caustic soda and other material are produced into low viscosity phosphate ester starch through the technological process including pre-drying, temperature raising and lowering, regulating pH value and other steps. The low viscosity phosphate ester starch has the features of low viscosity, high stability, good filming performance, high water maintaining property, etc. and may be widely used in starch processing.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a production process for producing high-viscosity phosphate starch by a novel dry method. Background technique [0002] Phosphate starch is a kind of ester starch. It has the characteristics of low gelatinization temperature, short paste process, good emulsification, and good water retention. It can be widely used in various industries, but due to the effect of esterification, it has caused its Viscosity is greatly increased. For some industries that require high viscosity, such as thickeners, water retaining agents, emulsifiers for food industry, and paper industry for spraying starch, etc., it can be used for some industries that require low viscosity, such as paper coatings. Cloth starch, surface sizing starch, etc., although they have good water retention and film-forming properties, but because the viscosity is too high, they cannot form a high-concentration, low-vis...

AI Technical Summary

Problems solved by technology

[0002] Phosphate starch is a kind of ester starch. It has the characteristics of low gelatinization temperature, short paste process, good emulsification, and good water retention. It can be widely used in various industries, but due to the effect of esterification, it has caused its Viscosity is greatly increased. For some industries that require high viscosity, such as thickeners, water retaining agents, emulsifiers for food industry, and paper industry for spraying starch, etc., it can be used for some industries that require low viscosity, such as paper coatings. Cloth starch, surface sizing starch, etc., although they have good water retention and film-forming properties, but because the viscosity is too high, they cannot form a high-concentration, low-viscosity paste, so the solid content cannot meet the requirements, which requires Viscosity degradation of starch

The traditional process of degrading viscosity is to produce phosphate starch by dry process, and then use wet process (acid degradation or oxidation) to process it. Not only the process is complicated, but also the cost is high.