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Synthesis method of octenyl succinate starch ester

A technology of octenyl succinic acid and synthesis method, which is applied in the field of food biochemical industry, can solve problems such as large pollution, unsuitable products for food, complicated purification steps, etc., and achieve the effects of mild conditions, increased contact area, and improved reaction efficiency

Active Publication Date: 2012-02-01
QILU UNIV OF TECH
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  • Claims
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Problems solved by technology

Although relevant reports show that the degree of substitution of starch octenyl succinate increases, its emulsifying activity improves, and the starch octenyl succinate synthesized by the aqueous phase method has a negative effect on the formation of emulsion due to the increase of degree of substitution; the organic phase The emulsification performance of the octenyl succinic acid starch ester synthesized in the water phase is better than that synthesized in the water phase, but due to the large amount of organic solvent used, the pollution is relatively large, and the purification steps are complicated, the product is not suitable for food

Method used

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  • Synthesis method of octenyl succinate starch ester

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Starch pretreatment Weigh 30g of starch, put it into 100ml of water at 55°C and swell for 20 minutes, and filter.

[0028] (2) Esterification Add 110ml of mixed solvent of n-hexane and water to the treated starch, the volume ratio of n-hexane and water is 10 / 1, then add lipase 0.09g, octenyl succinic anhydride 1.5g, 40 The reaction was stirred in a constant temperature water bath for 10 min, and the stirring speed was 100 rpm to obtain starch octenyl succinate. The degree of substitution of starch octenyl succinate was determined to reach 0.00854.

Embodiment 2

[0030] (1) Starch pretreatment Weigh 30g of starch, put it into 100ml of water at 55°C and swell for 20 minutes, and filter.

[0031] (2) esterification reaction Add 120ml of mixed solvent of n-hexane and water to the treated starch, the volume ratio of n-hexane and water is 10 / 2, then add lipase 0.33g, octenyl succinic anhydride 2.7g, 30 ℃ constant temperature water bath stirring reaction for 20min, stirring speed 200rpm, to obtain octenyl succinate starch ester, the degree of substitution of octenyl succinate starch ester reaches 0.00939.

Embodiment 3

[0033] (1) Starch pretreatment Weigh 30g of starch, put it into 100ml of water at 55°C and swell for 20 minutes, and filter.

[0034] (2) Esterification Add 130ml of mixed solvent of n-hexane and water to the treated starch, the volume ratio of n-hexane and water is 10 / 3, then add 0.21g of lipase, 3.3g of octenyl succinic anhydride, 60 The reaction was stirred in a constant temperature water bath for 30 min, and the stirring speed was 150 rpm to obtain starch octenyl succinate. The degree of substitution of starch octenyl succinate was determined to reach 0.00532.

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Abstract

The invention relates to a synthesis method of octenyl succinate starch ester, belonging to the technical field of food biochemical industry. By using a mixed solvent of normal hexane and water as the solvent for esterification reaction, the synthesis method comprises the following steps: adding a right amount of octenyl succinate anhydride and lipase into pretreated starch, reacting while stirring, filtering, recycling the organic solvent, and drying filter cakes to obtain the octenyl succinate starch ester. The invention realizes the synthesis of the octenyl succinate starch ester in a nonaqueous phase system through the catalysis of the lipase, and determines the optimal production process conditions. The method has the characteristics of mild reaction conditions, uniform reaction and the like, and the enzyme catalysis in the nonaqueous phase leads to higher esterification reaction efficiency.

Description

technical field [0001] The invention relates to a method for synthesizing starch octenyl succinate, and belongs to the technical field of food biochemical industry. Background technique [0002] Starch octenyl succinate is a new type of modified starch, which is obtained by esterification of octenyl succinic anhydride and starch. It introduces a hydrophilic group and a lipophilic group at the same time, and the ratio between the two is 1:1. When starch octenyl succinate is used in oil / water emulsion, its hydrophilic carboxylic acid group extends into water, The lipophilic octenyl long chain extends into the oil, and the polysaccharide long chain forms a tough, cohesive, continuous and not easy to break film at the oil-water interface, preventing the aggregation or separation of the dispersed phase particles, thereby emulsifying The system remains highly stable, so it can act as an emulsion stabilizer. In addition, because of its good fluidity and hydrophobicity, it can pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/04
Inventor 崔波徐毅华檀琮萍曲静然
Owner QILU UNIV OF TECH
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