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Method for preparing octenyl succinic acid modified starch and application thereof

A technology of octenyl succinic acid and starch ester, applied in application, food preparation, microsphere preparation and other directions, can solve the problems of easy rupture of starch film, uneven system, slow film forming speed, etc., and achieves favorable dispersion and dissolution. , good safety, the effect of increasing the dissolution rate

Inactive Publication Date: 2013-03-06
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application of starch octenyl succinate, due to the difference in the type and quality of starch raw materials and the difference in preparation methods, the conventional starch octenyl succinate has a slow film-forming speed when applied to the preparation of starch films. The starch film is easy to break; when conventional starch octenyl succinate is used to prepare emulsifiers and add it to yogurt and other foods, it will cause problems such as excessive viscosity and uneven system

Method used

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  • Method for preparing octenyl succinic acid modified starch and application thereof
  • Method for preparing octenyl succinic acid modified starch and application thereof
  • Method for preparing octenyl succinic acid modified starch and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 Preparation method example

[0042] Materials: The test material is commercially available rice, and the chemical reagents are all analytically pure and obtained from commercial sources.

[0043] 1. Extraction process of raw starch

[0044] (1) Cleaning: Weigh 3kg of raw rice and put it into a 10L plastic bucket, add 3-4kg of tap water to clean the raw material three times, drain and set aside;

[0045] (2) soaking: add the rice of the solution soaking step 1) of the NaOH of 0.4% concentration for 24 hours, the weight of this NaOH solution is 3 times of raw material rice weight;

[0046] (3) Pulping: the soaked raw rice with the solution of above-mentioned NaOH is refined together, and the NaOH solution of 0.4% concentration is added while refining, and the weight of the solution of this NaOH is 6 times of the weight of the raw rice, to obtain rice starch slurry;

[0047] (4) Neutralization and washing with water: the rice starch slurry was neutralized t...

Embodiment 2

[0076] Example 2 Effect of starch type and mechanical activation mode on octenyl succinic acid starch ester DS

[0077] The octenyl starch succinate prepared by the method of Example 1.

[0078] The DS values ​​of three types of rice starches, such as indica rice starch, japonica rice starch and glutinous rice starch, which were mechanically activated first and then modified by OSA increased significantly with the prolongation of mechanical activation time, but did not change significantly after 10 hours. The DS of natural starch modified by OSA of indica rice starch is the largest, followed by that of japonica rice starch, and the minimum of glutinous rice starch. There was no significant difference, but the DS of indica rice starch was still significantly greater than that of glutinous rice starch. When the mechanical activation time was greater than 5 hours, there was no significant difference between the DS of indica rice starch and japonica rice starch OSA modified under...

Embodiment 3

[0087] The effect of the addition of embodiment 3 alkali on octenyl succinic acid starch ester DS

[0088] The octenyl starch succinate prepared by the method of Example 1.

[0089] No NaCO added 3 , the DS of starch increased from 0.00032 at 0h to 0.00968 at 100h with the extension of mechanical activation time, and the mechanical force caused the esterification reaction between octenyl succinic anhydride and starch. Add NaCO 3 After mechanical activation for 5 hours, the DS of starch can reach 0.01376. With the prolongation of mechanical activation time, DS increased, but the DS difference between mechanical activation 50h and 100h was not significant, see Table 3 for details. Therefore, the simultaneous modification of mechanical activation and OSA can cause OSA esterification without adding alkali, but adding alkaline substances can open the ring of OSA, which can be carried out by esterification.

[0090] Table 3 Effect of alkali addition on starch octenyl succinate D...

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Abstract

The invention belongs to the technical field of preparation of starch, belongs to the technical field of preparation of modified starch, and in particular relates to a method for preparing octenyl succinic acid modified starch and application thereof. The method comprises the following steps of: drying the starch serving as a raw material and performing constant weight of the starch to reach a certain water content; grinding the starch to obtain activated starch; adding distilled water into the starch to oscillate and adding alkali to regulate pH; slowly adding octenyl succinic acid (OSA) into the starch; adding acid to neutralize after the reaction is finished; performing alcohol washing on the mixture; centrifugally collecting wet starch; drying the wet starch; pulverizing the wet starch; and screening to obtain the octenyl succinic acid modified starch. The method is characterized in that the raw material starch is mechanically activated before esterification reaction is carried out; and the reaction activity of the starch is increased, the substitution degree of the OSA is increased, the reaction time is shortened, the using amount of the alkali is reduced, and the production of the octenyl succinic acid modified starch is facilitated in a ball milling mode. The method can be used for food, such as starch glue, microcapsule wall materials, yoghourt, steamed sponge cakes, cakes and the like.

Description

technical field [0001] The invention belongs to the technical field of starch preparation, in particular to the technical field of modified starch preparation, and specifically relates to a preparation method and application of starch octenyl succinate. Background technique [0002] Starch octenyl succinate is one of the research hotspots in modified starch at present, especially low-viscosity starch octenyl succinate has good film-forming and emulsifying properties, and is an ideal wall material for microcapsules . At present, researchers at home and abroad generally use aqueous phase method (Jeon et al., 1999; Jyothi et al., 2005; Song Xiaoyan et al., 2008;), dry method (Huang Qiang, 2008; Liu Zhiqiang et al., 2003), organic phase method ( Lu Hua et al., 2009), microwave method (Chen Junzhi et al., 2004; Li Hongming et al., 2006) and other methods prepare octenyl succinic acid starch ester, and the aqueous phase method reacts evenly but octenyl succinic anhydride is incom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04C08B30/04A23L1/035A23L1/105A23C9/13A21D13/08A21D2/18B01J13/02A23L7/104A23L29/10
Inventor 赵思明熊善柏王丽刘茹刘友明
Owner HUAZHONG AGRI UNIV
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