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Simultaneously acid hydrolysis and esterizing modified composite modified starch and its preparing method and use

A technology of compound modified starch and esterification reaction, which is applied in the field of modified starch to achieve good economic benefits, cost reduction, and scientific and practical process design

Inactive Publication Date: 2006-09-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simultaneous acid hydrolysis and esterification of starch are used to prepare composite modified starch, but there is no relevant information reported so far.

Method used

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  • Simultaneously acid hydrolysis and esterizing modified composite modified starch and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 3g of stearic acid, dissolve it in 80ml of absolute ethanol at 70°C, then slowly add it to 100g of starch (dry basis), and keep stirring, then add 1ml of 2mol / L hydrochloric acid, and keep stirring, pass through 10 mesh Sieve into granules, place at 50°C, dry for 1 hour, cool down, measure the moisture mass fraction, then adjust the moisture mass fraction to 20%, and balance for 24 hours, then place at 150°C, react for 3 hours, cool, pulverize, pack, and obtain Finished starch stearate.

[0021] Degree of substitution

[0022] Degree of substitution

[0023] Note: The viscosity is measured by NDJ-79 rotary viscometer at 90°C.

Embodiment 2

[0025] Taking linoleic acid as an esterifying agent, all the other formulas and operating conditions are the same as in Example 1 to obtain the finished product linoleic acid starch ester.

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Abstract

The present invention prepares composite modified starch via simultaneous high temperature acid hydrolysis and esterification, and especially provides one kind of starch stearate with diet fiber function. The product has the properties of both esterified starch and acidolyzed starch, and may be used to replace fat substitute in producing low-fat vegetable butter, ice cream, etc. and to replace expensive acasia, propylene glycol alginate, etc. in producing microcapsule wall. The present invention has the advantages of organic combination of the two kinds of starch modifying methods, reaction in dry reactor, less environmental pollution, etc.

Description

technical field [0001] The invention discloses a compound modified starch modified by simultaneous acid hydrolysis and esterification, its preparation method and application, and belongs to the technical field of modified starch. Background technique [0002] Starch stearate is a long-chain fatty acid starch ester. With the introduction of hydrophobic organic carbon chains, the hydrophobicity of starch increases, and it can be used as an emulsifier. It is used in food, medicine, materials, daily chemicals, etc. . Regarding the research on starch stearate, more work has been done abroad, especially in Japan. Most of the preparation methods are prepared by reacting starch and stearic acid chloride in organic solvents (such as pyridine, dimethylformamide, etc.), and the products are mainly used in cosmetics or degradable plastics. Only Cheng Fa et al. from Tianjin University have been reported in China to prepare starch stearate by using K 2 CO 3 As a catalyst, water is use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/00
Inventor 张燕萍徐爱国
Owner JIANGNAN UNIV
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