Preparation process for new DHA microcapsules

A preparation process and microcapsule technology, which is applied in the field of preparation of new DHA microcapsules, can solve the problems of different conditions, effect research, and the effect of protein and sugar interaction, etc., so as to reduce interfacial tension, increase thickness and mechanical strength Effect

CN101878903AInactive Publication Date: 2010-11-10NANJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-11-10
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a preparation process for new DHA microcapsules. In the process, Maillard reactant obtained from the reaction of protein and carbohydrates is utilized as a wall material, and a complex coacervation method and a secondary embedding technology are utilized. The specific steps of the process are as follows: evenly dispersing grease in Arabic gum and gelatin aqueous solutions, and regulating pH value and temperature to carry out complex coacervation to embed oil drops, thus obtaining wet microcapsules; and adding a secondary embedding material, i.e. Maillard reactant in the wet microcapsules, spray drying to obtain secondarily embedded DHA microcapsules. The product shelf life is dramatically prolonged. The microcapsules obtained by the invention have the characteristics of improved film thickness and mechanical strength, heat resistance, high humidity environment resistance and the like.
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Description

technical field

[0001] The invention belongs to the technical field of food production and relates to a preparation process of novel DHA microcapsules. Background technique

[0002] DHA (docosahexaenoic acid) is a long-chain polyunsaturated fatty acid. DHA mainly exists in the gray matter part of the brain. It is the main lipid component in human brain nerve cells and is also the fatty acid that brain cells preferentially absorb and utilize. It is an important nutrient component in the development of infant nerve cells, and has a great relationship with the sensitivity of infants' growth; the content of DHA in optic nerve cells and retinal tissues is as high as 40-47%. It plays an important role in the normal function of the body. If there is a lack of DHA in the food, the DHA content in the retinal tissue will decrease, resulting in decreased vision and resolution. Because the synthesis efficiency of DHA in infants and young children is very low, the amount of DHA synthesi...

Examples

Embodiment 1

[0044] (1) Add gelatin and gum arabic to water at 80°C, stir (300r / min) to dissolve, so that the gelatin concentration is 5g / L, and the gum arabic concentration is 5g / L;

[0045] (2) After cooling the solution prepared in step (1) to 40° C., add microalgae oil, the amount of microalgae oil added is twice the total mass of gelatin and gum arabic, and stir (400 r / min) to mix;

[0046] (3) Emulsify the mixed solution prepared in step (2) by a high-speed disperser for 3 minutes, and then homogenize it for 4 minutes at 30 to 40 MPa with a high-pressure homogenizer to obtain a stable emulsion;

[0047] (4) Use 10% (w / w) acetic acid solution to adjust the pH value of the emulsion to 4.0, stir in a 40°C water bath (350r / min) for 15 minutes, then immediately cool down to 15°C with an ice-water bath, and the condensed phase is around the oil Agglomeration to form a coating;

[0048] (5) adjust the pH value of the mixed system obtained in step (4) to 6.0, add transglutaminase, the addit...

Embodiment 2

[0053] (1) Add gelatin and gum arabic to water at 70°C, stir (300r / min) to dissolve, so that the gelatin concentration is 4g / L, and the gum arabic concentration is 4g / L;

[0054] (2) After cooling the solution prepared in step (1) to 40° C., add microalgae oil, the amount of microalgae oil added is 1 times the total mass of gelatin and gum arabic, and stir (300 r / min) to mix;

[0055] (3) Emulsify the mixed solution prepared in step (2) with a high-speed disperser for 1 min, and then homogenize it at 30-40 Mpa for 1 min with a high-pressure homogenizer to obtain a stable emulsion;

[0056] (4) Use 10% (w / w) acetic acid solution to adjust the pH value of the emulsion to 3.5, stir in a water bath at 40°C (300r / min) for 10 minutes, then immediately cool down to 13°C with an ice-water bath, and the condensed phase is around the oil Agglomeration to form a coating;

[0057] (5) adjust the pH value of the mixed system obtained in step (4) to 6.0, add transglutaminase, the addition ...

Embodiment 3

[0062] (1) Add gelatin and gum arabic to water at 80°C, stir (400r / min) to dissolve, so that the gelatin concentration is 6g / L, and the gum arabic concentration is 6g / L;

[0063] (2) After cooling the solution prepared in step (1) to 50° C., add microalgae oil, the amount of microalgae oil added is twice the total mass of gelatin and gum arabic, and stir (400 r / min) to mix;

[0064] (3) Utilize the high-speed disperser to emulsify the mixed solution prepared in step (2) for 5 minutes, and then homogenize it under 30-40Mpa for 5 minutes through a high-pressure homogenizer to obtain a stable emulsion;

[0065] (4) Use 10% (w / w) acetic acid solution to adjust the pH value of the emulsion to 4.0, stir in a water bath at 40°C (400r / min) for 15 minutes, then immediately cool down to 17°C with an ice-water bath, and the condensed phase is around the oil Agglomeration to form a coating;

[0066] (5) adjust the pH value of the mixed system obtained in step (4) to 6.5, add transglutami...