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Edible nano-peanut protein composite film and preparation process thereof

A peanut protein and preparation technology, applied in the biological field, can solve the problems of underutilization and waste of resources, and achieve the effects of reduced water vapor permeability and swelling degree, improved mechanical strength and water resistance, and reasonable compatibility

Active Publication Date: 2016-01-20
山东金胜粮油食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Except for a small part of the remaining peanut cake after oil extraction is used for feed production, the rest is not fully utilized, resulting in a large waste of resources

Method used

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  • Edible nano-peanut protein composite film and preparation process thereof
  • Edible nano-peanut protein composite film and preparation process thereof
  • Edible nano-peanut protein composite film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation technology of edible nano-peanut protein composite film, it comprises the steps:

[0028] 1) Preparation of peanut protein isolate:

[0029] Take a certain amount of peanut protein powder, add water to dissolve according to the ratio of material to liquid 1:10 (kg / L), adjust the pH of the solution to 8.5, and stir at a constant temperature at 35°C for 1 hour, then centrifuge at 3000rpm for 15 minutes, and take the supernatant solution; adjust the pH of the supernatant to 4.5, centrifuge at 3000rpm for 15 minutes, collect the precipitate, and freeze-dry to obtain peanut protein isolate;

[0030] 2) Preparation of nano-peanut protein:

[0031] Prepare a peanut protein isolate solution with a concentration of 6% (add 6g to 100ml of water), adjust the pH of the solution to 8.5, let it stand at room temperature for 1 hour, and then add absolute ethanol drop by drop to the solution until the ethanol and water in the solution The volume ratio is 4:1, th...

Embodiment 2

[0037] The analysis of nano peanut protein structure prepared by the present invention

[0038] figure 1 with figure 2 They are the scanning electron microscope image and particle size distribution graph of nano-peanut protein respectively, from which it can be seen that the nano-protein particles prepared by the present invention are spherical, have a consistent structure and smooth surface; the particle size distribution of nano-protein particles is from 150nm to 500nm, mainly The distribution is around 200nm, reaching the nanometer level, and the distribution is relatively uniform.

Embodiment 3

[0040] Performance testing and influencing factors:

[0041] 1. The influence of nano-corn starch solution on the mechanical strength and water resistance of peanut protein composite film, see Table 1, wherein, it is divided into four groups: Group 1 is Example 1 of the present invention; Group 2: Refer to Example 1, But no nano-corn starch solution was added; Group 3: referring to Example 1, adding corn starch (untreated); Group 4: referring to Example 1, adding pea starch (untreated).

[0042] Table 1

[0043]

[0044] Conclusion: In the present invention, by adding an appropriate amount of nano-corn starch, both the mechanical strength and the water-blocking performance are greatly improved.

[0045] 2. In the present invention, the water vapor permeability and swelling degree of the composite membrane are greatly reduced by adding chitosan and agar. Compared with the control group without adding chitosan and agar, we unexpectedly found that the water vapor permeability...

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Abstract

The invention belongs to the biological technical field and discloses a preparation method of an edible nano peanut protein composite membrane. The preparation method comprises the following steps: (1), preparing peanut isolate protein; (2), preparing nano peanut protein; (3), preparing nano corn starch liquor; and (4), preparing the composite membrane. The invention further discloses the edible nano peanut protein composite membrane prepared by the process. According to the invention, materials are unique in selection and reasonable in compatibility, and the prepared composite membrane has performances superior to those of other products; and the preparation process is unique, and simple in operation flow, and satisfies large-scale industrial production requirements.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to an edible nano-peanut protein composite film and a preparation process thereof. Background technique [0002] Plastic films are films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins that are used for packaging and as laminations. Plastic packaging and plastic packaging products account for an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, among which food packaging accounts for the largest proportion, such as beverage packaging , quick-frozen food packaging, cooking food packaging, fast food packaging, etc., these products have brought great convenience to people's lives. Plastic film has been used more and more widely since its inception. However, ordinary plastic film is a petroleum-based polymer material and cannot be degraded under natur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L89/00C08L3/02C08L5/08C08L5/12C08J5/18
Inventor 高冠勇陈宁
Owner 山东金胜粮油食品有限公司
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