Octenyl succinic acid starch ester, lipid-soluble nutrient microcapsule as well as preparation method application of lipid-soluble nutrient microcapsule

A technology of octenyl succinic acid and fat-soluble nutrients, applied in the field of synthetic chemistry, can solve problems such as low degree of substitution, severe local reaction, insoluble acid anhydrides in water, etc., to improve application performance, short production cycle, and improve emulsification. performance effect

Active Publication Date: 2019-03-26
ZHEJIANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The esterification methods of traditional synthetic octenyl succinic acid starch esters include: 1) water phase method, uniform reaction, less environmental pollution, the disadvantage is that the anhydride is insoluble in water, and reacts heterogeneously during the reaction, so the reaction conditions need to be strictly controlled and the reaction The time is longer; 2) The organic phase method has uniform reaction and high efficiency, but the disadvantage is that the degree of substitution is not very high, the emulsification performance is poor, and the environmental pollution is large; 3) the dry method, the process is simple, the cost is low, and the environmental pollution is small. The disadvantage is that Uneven mixing of materials can easily cause severe local reactions; 4) Microwave method is efficient, clean and energy-saving, but it only stays at the stage of theoretical exploration

Method used

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  • Octenyl succinic acid starch ester, lipid-soluble nutrient microcapsule as well as preparation method application of lipid-soluble nutrient microcapsule
  • Octenyl succinic acid starch ester, lipid-soluble nutrient microcapsule as well as preparation method application of lipid-soluble nutrient microcapsule
  • Octenyl succinic acid starch ester, lipid-soluble nutrient microcapsule as well as preparation method application of lipid-soluble nutrient microcapsule

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation of embodiment 1 octenyl starch succinate

[0049] 1) Mixing: Weigh 100Kg of waxy cornstarch and 600Kg of water at room temperature, stir evenly, adjust the pH value to 8.0, and stir evenly.

[0050] 2) Cooking and gelatinization: set the gelatinization temperature at 140°C, feed the material, and gelatinize for 20s (that is, the steam contacts the material for 20s), to obtain gelatinized starch, and turn on the cooling device to cool the material to 40°C.

[0051] 3) Cavitation emulsification: gelatinized starch is poured into the cavitation emulsification feeding bin of the single-stage cavitation emulsification device, 3Kg OSA is added while stirring, and the flow rate is set at 10L / min, the pressure is 500bar, and the cycle is 5 times to obtain An aqueous dispersion of starch octenyl succinate, wherein the mass percent content of starch octenyl succinate is 14.7%.

[0052] Comparative example 1 conventional method prepares octenyl succinic acid starc...

Embodiment 2～5

[0064] According to the method of embodiment 1, adjust parameters such as starch type, water consumption, gelatinization temperature and time, pH value, the consumption of octenyl succinic anhydride, the flow rate of cavitation emulsification and pressure and number of cycles, other conditions and Embodiment 1 is identical, obtains result as following table 2: (mass unit: Kg, flow velocity: L / min, pressure: bar)

[0065] Table 2

[0066]

Embodiment 6

[0067] The emulsifying properties of embodiment 6 octenyl starch succinate

[0068] Under room temperature, get the octenyl starch succinate aqueous dispersion (wherein containing 5Kg octenyl starch succinate) and 6KgVE (vitamin E) oil that is made by 100Kg waxy cornstarch and 600Kg water in 34Kg embodiment 1, Add 20Kg of water, high-speed shear (10000r / min) for 5min and high-pressure homogenization (500bar) for 10min to obtain an emulsion. Take 0.5g of the middle part of the emulsion sample into a 10mL volumetric flask, add 0.1g of 1000U α-amylase, and perform enzymatic hydrolysis and demulsification at 50°C for 5min. After demulsification, the volume was adjusted to 10 mL with ethanol, centrifuged, and the supernatant was taken for HPLC detection. The measured VE content was 9.7%, and the calculated emulsification rate was 96.8%. (Refer to the literature J. Food Sci. 2015, 80, C680-C686 for the detection method).

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Abstract

The invention relates to octenyl succinic acid starch ester, a lipid-soluble nutrient microcapsule as well as a preparation method application of the lipid-soluble nutrient microcapsule. A preparationmethod of octenyl succinic acid starch ester comprises the step of carrying out esterification reaction on gelatinized starch and octenyl succinic anhydride in a cavitation emulsification process, soas to obtain octenyl succinic acid starch ester. According to the preparation method, the esterification reaction is promoted and intensified by virtue of the cavitation emulsification process, remarkably substitution occurs in a crystallization region and an amorphous region of the starch through the molecular collision of the collision between gelatinized starch and octenyl succinic anhydride,so that the esterification rate of prepared octenyl succinic acid starch ester is increased, and the emulsifying property is greatly improved. The method is rapid and efficient, and a hydrolysis stepis omitted after the esterification, so that the problems that molecular chains are damaged in different degrees due to the hydrolysis, the chain length and content of amylose are remarkably decreased, the compactness of a film formed by octenyl succinic acid starch ester is decreased, and the film easily absorbs moisture and conducts heat and is crispy are avoided, and the application performanceof octenyl succinic acid starch ester is improved.

Description

technical field [0001] The invention relates to the technical field of synthetic chemistry, in particular to starch octenyl succinate, fat-soluble nutrient microcapsules, a preparation method and application. Background technique [0002] Octenyl succinic anhydride modified starch (OSA starch) is a research and development hotspot at home and abroad in recent years. It is obtained by the esterification reaction between hydroxyl groups in starch molecules and octenyl succinic anhydride (OSA). , so that the lipophilic group is introduced so that the starch octenyl succinate has both hydrophilic and lipophilic properties. This amphiphilic starch octenyl succinate can be used in oil-in-water or water-in-oil systems It forms a small oil-in-water emulsion with excellent stability, which can have a significant emulsifying and embedding function for fat-soluble substances, and is widely used in the fields of food, medicine and cosmetics. For example, starch octenyl succinate can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04A23K20/163A23L33/10A23L33/105A23L33/15A23L33/155A23P10/30
CPCA23K20/163A23L33/10A23L33/105A23L33/15A23L33/155A23P10/30C08B31/04A23V2002/00A23V2250/702A23V2250/712A23V2250/7104A23V2250/7106A23V2250/211A23V2250/314A23V2250/213
Inventor 陈志荣仇丹胡柏剡竹文礼李建东祁勇李其川吴可军于凯
Owner ZHEJIANG UNIV
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