Preparation method for corn protein film with high antioxidation characteristic
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 low antioxidant capacity and lack of function, and achieve the effects of simple process, enhanced activity and improved antioxidant performance
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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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