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Duck fatty liver microcapsule and preparation method thereof

A technology of duck fat liver and microcapsules is applied in the directions of ultrasonic treatment of food, function of food ingredients, and food forming, etc. It can solve problems such as high tensile strength, achieve good film-forming properties, widen the utilization market of duck fat liver, Improve the effect of the function

Active Publication Date: 2018-11-06
QINGDAO AGRI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high proportion of oil in duck fatty liver and strong fluidity, the coating wall material requires high tensile strength, and it is difficult to succeed with ordinary coating wall materials and proportions. This technology has become a key issue for industrial development that needs to be innovated.

Method used

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  • Duck fatty liver microcapsule and preparation method thereof
  • Duck fatty liver microcapsule and preparation method thereof
  • Duck fatty liver microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of duck fat liver microcapsules of the present invention comprises the following steps:

[0030] 1) Preparation of core material duck fatty liver slurry: homogenate duck fatty liver to obtain slurry. The composition of the slurry is relatively complex. In addition to oil, it also contains liver cell tissue, blood vessels, capillary ducts, hoof tissue, etc. in different proportions. It is difficult to ensure the consistency of particle shape and size after pulping; Unlike the affinity of substances, it is difficult to implement microencapsulation. Different from the foie gras oil studied before, because the ingredients are single, as long as the ratio of the core material to the wall material is selected, it is easier to coat and the particle size is relatively consistent.

[0031] 2) Wall material selection: Arabic tape is negatively charged; gelatin is an amphoteric polymer polyelectrolyte, which is positively charged under acidic conditions and...

Embodiment 1

[0038] Example 1: Screening test of duck fat liver microencapsulation process conditions

[0039] (1) Preparation of emulsion

[0040] Prepare gum arabic and gelatin into an aqueous solution of a certain concentration, and after fully dissolving and mixing, add a certain amount of alkyl glycoside (APG) and chitosan, stir until uniform, and use this solution as a reaction solution; Add it dropwise to the reaction solution, adjust the pH with acetic acid, and use ultrasonic treatment to form an emulsion.

[0041] (2) Emulsion freeze-drying treatment

[0042] Pour the emulsion into a plastic petri dish, pre-cool at -40°C, freeze-dry it in a freeze dryer for 15 hours, and take it out.

[0043] (3) Determination of Microcapsule Embedding Rate

[0044] The embedding rate refers to the ratio of the content of duck fatty liver serum embedded in the microcapsule product to the total amount of duck fatty liver serum added during embedding. The higher the embedding rate, the greater ...

Embodiment 2

[0071] Embodiment 2: comparative test 1 of preparation technology of duck fat liver microcapsules

[0072] The emulsion was prepared according to the steps of Example 1, and maltodextrin and soybean protein isolate were selected as the coating wall material, wherein the ratio of the core material to the wall material was 1:5, the reaction pH value was 5.0, and the wall reaction temperature was 60°C. Add emulsifier alkyl glucoside and ultrasonic treatment to form emulsion. The emulsion was freeze-dried, and the microcapsule embedding rate was measured according to the above method. After five repeated tests, the embedding rate of the microcapsule products obtained was 56.21%, 57.34%, 56.31%, 56.43%, and 57.91%. , are lower than the embedding rate of 58.79% in Example 1, show that maltodextrin and soybean protein isolate are used as wall materials to coat duck fat liver powder effect than gelatin and acacia gum as wall materials.

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Abstract

The invention aims to provide a preparation method of a duck fatty liver microcapsule. The duck fatty liver microcapsule comprises a core material and a wall material. The duck fatty liver microcapsule is characterized in that the core material is duck fatty liver whole-liver serous fluid, a gelatin and Arabic gum mixture is selected as the wall material, and good emulsifying property and good film forming property are obtained; the embedding rate of the duck fatty liver microcapsule is increased. Chitosan is selected as a coating agent, the coating agent can be adhered to the surface of the core material, the tensile strength, the water resistance and the bursting strength can be enhanced while microcapsule coating on the core material is implemented, and the duck fatty liver microcapsuleis not easy to break during processing. The duck fatty liver microcapsule prepared by the invention is capable of effectively preventing the loss of unsaturated fatty acid during a preparation process, the stability and the convenience of the duck fatty liver microcapsule are both improved to a certain degree, and the shelf life of products is greatly prolonged; the core material and the wall material are respectively subjected to ultrasonic treatment, and the wall material can be more easily dissolved into water, so that the freeze drying time is reduced; technology disclosed by the invention fills the blank of the research field of duck fatty liver embedding technology, and important social and economic value for broadening a duck fatty liver utilization market is obtained.

Description

technical field [0001] The invention belongs to the field of food intensive processing, and in particular relates to a duck fat liver microcapsule and a preparation method thereof. Background technique [0002] Duck fatty liver is a special feed for artificial feeding of ducks, so that the formation of triglycerides in the liver far exceeds the formation of carrier protein, causing a large amount of fat to accumulate in the liver cells, causing the liver cells to hypertrophy and proliferate, forming a fatty liver , and its weight exceeds 5-10 times that before feeding. Duck fatty liver is rich in essential amino acids, unsaturated fatty acids, lecithin, various trace elements and various active enzymes required by the human body. The content of duck fatty liver oil is more than 60%, and the contained linoleic acid has the effects of delaying aging, lowering blood fat and softening blood vessels. [0003] Over the years, there have been two main sales methods of duck fatty ...

Claims

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Application Information

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IPC IPC(8): A23L13/20A23L13/50A23L29/25A23L5/30A23P10/30
CPCA23V2002/00A23L5/32A23L13/20A23L13/52A23L29/25A23P10/30A23V2200/3262A23V2250/5028A23V2300/48
Inventor 王宝维秦鹏飞王先明孙京新李承颖葛文华张名爱
Owner QINGDAO AGRI UNIV
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