A coaxial nanofiber membrane embedded with fish oil and its preparation and application

A nanofiber membrane, fish oil technology, applied in fiber processing, cellulose/protein conjugated rayon, conjugated synthetic polymer rayon, etc., to improve oxidative stability, expand applications, and prolong shelf life.

Active Publication Date: 2018-06-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is rare to apply this technology to the preparation of functional foods at present.

Method used

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  • A coaxial nanofiber membrane embedded with fish oil and its preparation and application
  • A coaxial nanofiber membrane embedded with fish oil and its preparation and application
  • A coaxial nanofiber membrane embedded with fish oil and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of preparation method of the coaxial nanofiber film of present embodiment embedding fish oil, specifically as follows:

[0042] (1) Dissolve 31g of PVP in 100mL of ethanol and stir until completely dissolved to obtain a shell spinning solution;

[0043] (2) Dissolve 25g of zein in 100mL of ethanol:water in a mixed solvent with a volume ratio of 8.5:1.5, and stir in a magnetic stirrer for 0.5h to obtain a 25% zein solution;

[0044] (3) Add a certain amount of fish oil to the solution in step (2) according to the quality of zein: fish oil = 10:3, and stir magnetically at 25-40°C for 1 hour;

[0045] (4) adding mass fraction in the solution of step (3) is 3% glycerin, stir;

[0046] (5) Inhale the shell spinning solution obtained in step (1) into a 5mL syringe, install a needle with a diameter of 0.6mm, and control the flow rate at 0.4mL / h; suck the solution prepared in step (4) into a 5mL syringe as the core spinning solution , install a needle with a diameter o...

Embodiment 2

[0049] A kind of preparation method of the coaxial nanofiber film of present embodiment embedding fish oil, specifically as follows:

[0050] (1) Dissolve 31g of PVP in 100mL of ethanol and stir until completely dissolved to obtain a shell spinning solution;

[0051] (2) Dissolve 25g of zein in 100mL of ethanol:water in a mixed solvent with a volume ratio of 8.5:1.5, and stir in a magnetic stirrer for 0.5h to obtain a 25% zein solution;

[0052](3) Add a certain amount of fish oil to the solution in step (2) according to the quality of zein: fish oil = 10:3, and stir magnetically at 25-40°C for 1 hour;

[0053] (4) adding mass fraction in the solution of step (3) is 3% glycerin, stir;

[0054] (5) Inhale the shell spinning solution obtained in step (1) into a 5mL syringe, install a needle with a diameter of 0.6mm, and control the flow rate at 0.3mL / h; suck the solution prepared in step (4) into a 5mL syringe as the core spinning solution , install a needle with a diameter of...

Embodiment 3

[0057] A kind of preparation method of the coaxial nanofiber film of present embodiment embedding fish oil, specifically as follows:

[0058] (1) Dissolve 31g of PVP in 100mL of ethanol and stir until completely dissolved to obtain a shell spinning solution;

[0059] (2) Dissolve 25g of zein in 100mL of ethanol:water in a mixed solvent with a volume ratio of 8.5:1.5, and stir in a magnetic stirrer for 0.5h to obtain a 25% zein solution;

[0060] (3) Add a certain amount of fish oil to the solution in step (2) according to the quality of zein: fish oil = 10:3, and stir magnetically at 25-40°C for 1 hour;

[0061] (4) adding mass fraction in the solution of step (3) is 3% glycerin, stir;

[0062] (5) Inhale the shell spinning solution obtained in step (1) into a 5mL syringe, install a needle with a diameter of 0.6mm, and control the flow rate at 0.2mL / h; suck the solution prepared in step (4) into a 5mL syringe as the core spinning solution , install a needle with a diameter o...

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Abstract

The invention belongs to the technical field of functional food processing, and discloses a coaxial nano fiber membrane for embedding fish oil, and preparation and application of the coaxial nano fiber membrane. The preparation method comprises the steps of dissolving polyvinylpyrrolidone in ethanol to obtain a shell layer spinning solution; dissolving zein in a mixed solvent of ethanol and water to obtain a zein solution, then sequentially adding fish oil and glycerin into the zein solution, and respectively stirring evenly to obtain a core layer spinning solution; finally, carrying out coaxial electrospinning on the shell layer spinning solution and the core layer spinning solution, and then drying to obtain the coaxial nano fiber membrane for embedding the fish oil. The preparation method utilizes a coaxial electrospinning technology to enable the polyvinylpyrrolidone to be spun at a shell layer and enable the fish oil and the zein to be co-spun at a core layer; the obtained coaxial nano fiber membrane is capable of effectively covering the fishy smell of the fish oil and improving the oxidation stability of the fish oil, so that the application of the electrospinning technology is further expanded in the food field.

Description

technical field [0001] The invention belongs to the technical field of functional food processing, and in particular relates to a coaxial nanofiber membrane embedded with fish oil and its preparation and application. Background technique [0002] With the rapid development of society and economy, people's demand for functional food is increasing. Fish oil is mainly produced from sardines, tuna, etc. It is rich in polyunsaturated fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) required by the human body, and has various physiological activities, so it is favored by people. of favor. However, fish oil has a strong fishy smell and is easily oxidized and deteriorated, which increases the difficulty of its application as a food nutrition fortifier. The traditional methods to cover up fish oil's fishy smell and improve its antioxidant properties mainly include nitrogen-filled storage, low-temperature storage, addition of antioxidants, deodorants, pickling,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01D5/34D01F8/10D01F8/02D01F1/10
CPCD01D5/003D01D5/0069D01D5/0076D01D5/0092D01D5/34D01F1/10D01F8/02D01F8/10
Inventor 吴虹杨欢宗敏华冯坤
Owner SOUTH CHINA UNIV OF TECH
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