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Efficient preparation method of modified starch-lipid binary compound

A compound and starch technology, which is applied in the field of food processing, can solve problems such as poor emulsification ability and insolubility in cold water, and achieve the effect of improving interaction, emulsification ability, and good emulsification ability

Active Publication Date: 2021-11-26
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because conventional starch itself has certain defects, such as insolubility in cold water, poor emulsifying ability, etc.

Method used

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  • Efficient preparation method of modified starch-lipid binary compound
  • Efficient preparation method of modified starch-lipid binary compound
  • Efficient preparation method of modified starch-lipid binary compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Prepare conventional cornstarch with the prepared ionic liquid compound solution to form 10wt% starch milk; then add 0.5M sodium hydroxide solution to adjust the pH value of the system to 8.0-8.5; weigh the dry weight of starch 1 % octenyl succinic anhydride, at a temperature of 25°C, add dropwise to the system within 2.5h to modify the starch; the modification reaction lasts for 5h, and the stirring rate is 200rpm; after the reaction, adjust the pH value of the system to 6.0; Alternate centrifugation washing with deionized water and 70% ethanol, each 3 times, centrifugal force 5000g, centrifugation time 10min; dry in a vacuum oven at 40°C for 12h to obtain starch octenyl succinate.

[0027] (2) Premix starch octenyl succinate and deionized water for 3 minutes, and the stirring rate is 200 rpm to prepare 8 wt% starch suspension; then the mass ratio of lipid to modified starch dry basis is 1:20 Lipid was added, the stirring time was 2min, the speed was 260rpm, and th...

Embodiment 2

[0030] (1) Prepare conventional cornstarch with the prepared ionic liquid compound solution to form 10wt% starch milk; then add 0.5M sodium hydroxide solution to adjust the pH value of the system to 8.0-8.5; weigh the dry weight of starch 3 % octenyl succinic anhydride, at a temperature of 25°C, add dropwise to the system within 2.5h to modify the starch; the modification reaction lasts for 5h, and the stirring rate is 200rpm; after the reaction, adjust the pH value of the system to 6.0; Alternate centrifugation washing with deionized water and 70% ethanol, each 3 times, centrifugal force 5000g, centrifugation time 10min; dry in a vacuum oven at 40°C for 12h to obtain starch octenyl succinate.

[0031] (2) Preparation of modified starch suspension by premixing and the type and method of adding lipids are the same as in Example 1.

[0032] (3) The processing and preparation method is the same as in Example 1.

Embodiment 3

[0034] (1) Prepare conventional cornstarch with the prepared ionic liquid compound solution to form 10wt% starch milk; then add a 0.5M sodium hydroxide solution to adjust the pH value of the system to 8.0-8.5; weigh the dry weight of starch 9 % octenyl succinic anhydride, at a temperature of 25°C, add dropwise to the system within 2.5h to modify the starch; the modification reaction lasts for 5h, and the stirring rate is 200rpm; after the reaction, adjust the pH value of the system to 6.0; Alternate centrifugation washing with deionized water and 70% ethanol, each 3 times, centrifugal force 5000g, centrifugation time 10min; dry in a vacuum oven at 40°C for 12h to obtain starch octenyl succinate.

[0035] (2) Preparation of modified starch suspension by premixing and the type and method of adding lipids are the same as in Example 1.

[0036] (3) The processing and preparation method is the same as in Example 1.

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Abstract

The invention provides an efficient preparation method of a modified starch-lipid binary complex, which comprises the following steps: chemically modifying conventional starch through octenyl succinic anhydride to enable the conventional starch to have excellent emulsifying property; taking starch octenyl succinate and lipids (palmitic acid, monopalmitin and dipalmitin) as raw materials, controlling the mass ratio of the starch octenyl succinate to the lipids to be (10-200): 1, preparing a starch suspension with the concentration of 7-20%, and preparing the starch-lipid binary compound efficiently through a water phase system. The preparation method provided by the invention can effectively promote the compounding of starch and diglyceride in the food processing process. Compared with a traditional process, the starch-lipid compound with specific physicochemical properties and nutritional functions prepared based on the preparation method disclosed by the invention is higher in efficiency and better in quality, and is more beneficial to improvement of food quality and regulation and improvement of nutrition and health of a human body.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to an efficient preparation method of a modified starch-lipid binary compound. Background technique [0002] Starch-lipid complex is mainly a supramolecular helical structure formed by the self-assembly of amylose and lipid during thermal processing, which is commonly found in processed starchy foods. Starch-lipid complexes have attracted much attention due to their unique functional and nutritional health properties, such as reducing the hardness of starch, delaying starch retrogradation, improving gel properties, and having reduced starch digestibility and excellent fermentation properties. The formation quantity and structural stability of starch-lipid complexes are affected by many factors, mainly including starch source, lipid structure and reaction conditions. Among them, the alkyl chain length, unsaturation, and solubility of lipids affect the structural ...

Claims

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Application Information

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IPC IPC(8): C08L3/06C08K5/09C08K5/103C08B31/04
CPCC08K5/09C08K5/103C08B31/04C08L3/06Y02P20/54A23L29/219
Inventor 王书军王晋伟任菲晁琛
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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