A kind of preparation method of zein film with high anti-oxidation property

A technology of corn protein and corn gluten powder, which is applied in the field of preparation of corn protein film, can solve the problems of lack of function and low anti-oxidation, and achieve the effect of enhanced activity, simple process and improved anti-oxidation performance

Active Publication Date: 2015-08-19
万洲胶粘制品(江苏)有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the zein film has the above-mentioned advantages, this single-component film is lacking in function and has low oxidation resistance. If certain substances with health care or pharmacological active ingredients are added to the protein, high-performance corn can be developed. Glamin film will have high application value

Method used

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  • A kind of preparation method of zein film with high anti-oxidation property
  • A kind of preparation method of zein film with high anti-oxidation property
  • A kind of preparation method of zein film with high anti-oxidation property

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Embodiment 1

[0026] A preparation method of a zein film with high antioxidant properties, comprising the steps of:

[0027] (1) Adding 30% water of the corn gluten powder mass to the corn gluten powder, extruding with a twin-screw extruder at a temperature of 130°C for pretreatment;

[0028] (2) Peel and crush the garlic, add the crushed garlic to deionized water at a mass ratio of 1:10, extract at 80°C for 1.0 hour, filter, and repeatedly extract 3 times, and the filtrate Combined to obtain the garlic water extract; at 50°C and under a pressure of 0.08 MPa, the garlic water extract was concentrated under reduced pressure to 1 / 4 of the original volume, and dried to obtain the garlic water extract;

[0029] (3) According to the mass ratio of 1:8, add the corn gluten powder obtained through the treatment of step (1) into the ethanol aqueous solution with a volume concentration of 80%, stir and extract at a temperature of 70°C for 30 minutes, and let it stand for 1 ~2 hours, solid-liquid sep...

Embodiment 2

[0032] A preparation method of a zein film with high antioxidant properties, comprising the steps of:

[0033] (1) Adding 20% ​​water of the corn gluten powder mass to the corn gluten powder, extruding with a twin-screw extruder at a temperature of 130°C for pretreatment;

[0034] (2) Peel and crush the garlic, add the crushed garlic to deionized water at a mass ratio of 1:5, extract at 90°C for 1.0 hour, filter, and repeat the extraction twice, and the filtrate Combined to obtain the garlic water extract; at 60°C and under a pressure of 0.1 MPa, the garlic water extract was concentrated under reduced pressure to 1 / 8 of the original volume, and dried to obtain the garlic water extract;

[0035](3) According to the mass ratio of 1:5, add the corn gluten powder obtained through the treatment of step (1) into the ethanol aqueous solution with a volume concentration of 60%, stir and extract at 80°C for 30 minutes, and let it stand for 1 Hours, solid-liquid separation, repeated ex...

Embodiment 3

[0038] A preparation method of a zein film with high antioxidant properties, comprising the steps of:

[0039] (1) Adding 40% water of the corn gluten powder mass to the corn gluten powder, extruding with a twin-screw extruder at a temperature of 160°C for pretreatment;

[0040] (2) Peel and crush the garlic, add the crushed garlic to deionized water at a mass ratio of 1:10, extract at a temperature of 70°C for 1.5 hours, filter, and repeatedly extract 4 times, and the filtrate Combined to obtain the garlic water extract; at 40°C and under a pressure of 0.06 MPa, the garlic water extract was concentrated under reduced pressure to 1 / 4 of the original volume, and dried to obtain the garlic water extract;

[0041] (3) According to the mass ratio of 1:8, add the corn gluten powder obtained through the treatment of step (1) into the ethanol aqueous solution with a volume concentration of 80%, stir and extract at 60°C for 40min, and let stand for 1.5 Hours, solid-liquid separation,...

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Abstract

The invention discloses a preparation method for a corn protein film with a high antioxidation characteristic. The preparation method comprises the following steps: adding water in corn protein powder, carrying out extruding by using a twin screw extruder and carrying out preprocessing; subjecting garlic to peeling and crushing, adding deionized water and carrying out extraction, filtration, concentration and drying so as to obtain an aqueous garlic extract; adding extruded corn protein powder into an aqueous solution of ethanol and carrying out extraction, concentration and drying so as to obtain zein; and adding the aqueous garlic extract and the aqueous solution of ethanol into the zein, carrying out stirring, adding glycerol, continuing stirring and carrying out coating so as to obtain the corn protein film with the high antioxidation characteristic. According to results of experiments in the invention, the corn protein film with the high antioxidation characteristic has high capability in removing DPPH free radicals and a high inhibitory effect on lipid peroxidation.

Description

technical field [0001] The invention relates to a method for preparing a zein film, in particular to a method for preparing a zein film with high oxidation characteristics. Background technique [0002] Corn is one of the three major food crops in the world, and it is also a traditional crop in my country, with a wide planting area in China. Corn gluten powder is the main by-product in the process of producing corn starch by wet milling. It has a special smell and color, and has poor water solubility. The main chemical components of corn gluten powder are shown in Table 1 [0003] Table 1 Main chemical composition and content of corn gluten powder [0004] [0005] More than 68% of the protein in corn gluten meal is gliadin, 22% is gluten, and there are also a small amount of globulin and albumin. Prolamin is insoluble in water, but soluble in 60% to 95% alcohol aqueous solution. Because corn gluten powder lacks essential lysine and tryptophan, has poor water solubili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L89/00
Inventor 陈海霞陈书涵田京歌
Owner 万洲胶粘制品(江苏)有限公司
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