Starch-based intelligent response packaging film as well as preparation method and application thereof

Abstract

The invention discloses a starch-based intelligent response packaging film as well as a preparation method and application thereof, and relates to the technical field of food packaging. The starch-based intelligent response packaging film is prepared from starch, gellan gum, glycerol and anthocyanin / butyl essence oil lipidosome by adopting a solution pouring method, wherein the lipidosome is prepared from dioleoyl phosphatidyl ethanolamine, hemisuccinic acid cholesterol and distearoyl phosphatidyl ethanolamine-polyethylene glycol 2000. The starch-based intelligent response packaging film based on liposome loaded water / oil active ingredients has excellent antioxidant activity and antibacterial activity, can effectively prolong the shelf life of fruits and vegetables, and brings higher economic benefits; meanwhile, the preparation method of the starch-based intelligent response packaging film based on the liposome-loaded water / oil active component is simple and easy to industrialize.

Description

Technical Field

[0001] The invention belongs to the technical field of food packaging, and in particular relates to a starch-based intelligent response packaging film and a preparation method and application thereof. Background Art

[0002] In the field of food packaging, as consumers pay more and more attention to food quality and safety, the requirements for packaging materials are getting higher and higher. Although traditional food packaging materials can provide basic protection, such as moisture-proof, anti-oxidation and anti-pollution, they usually lack the ability to respond to changes in the internal environment of food and cannot achieve active control and protection of food quality. Therefore, the development of an intelligent packaging material that can control the release of active ingredients according to changes in the internal environment of food (such as temperature and pH changes) is of great significance for extending the shelf life of food, maintaining food freshness and improving food safety.

[0003] As a natural polymer material, starch is considered to be an ideal food packaging material due to its renewable, biodegradable and low-cost advantages. However, the mechanical properties and gas barrier properties of pure starch materials are relatively poor, which limits its application in the field of food packaging. In order to improve the performance of starch-based materials, researchers have carried out various chemical and physical modifications to enhance their functionality and applicability. Liposomes, as nanoscale vesicles, have been widely studied because of their ability to encapsulate water-soluble and oil-soluble active ingredients. Liposomes can protect sensitive ingredients from the influence of the external environment and release these ingredients under specific conditions. This property makes liposomes have great application potential in food packaging, especially in scenarios where controlled release of preservatives, antioxidants or other functional ingredients is required to extend the shelf life of food and maintain the freshness of food.

[0004] To this end, we provide a starch-based smart responsive packaging film based on liposome-loaded water / oil active ingredients and a preparation method and application thereof to solve the above-mentioned problems. Summary of the invention

[0005] To solve the above problems, the present invention aims to provide a liposome-loaded water / oil active ingredient starch-based sustained-release packaging film, the starch / glycerol / gellan gum / liposome packaging film has good antioxidant and antibacterial properties, and at the same time, the present invention also provides a preparation method and use, the preparation method is simple in steps, low in raw material cost and easy to industrialize. The present invention is achieved through the following technical solutions:

[0006] The present invention provides a starch-based smart response packaging film and a preparation method and application thereof. The starch-based smart response packaging film is composed of the following raw materials in terms of mass fraction:

[0007] Water 93.68-94 parts;

[0008] 4 parts starch;

[0009] 1 part of natural polysaccharide;

[0010] 1 part glycerin;

[0011] Water / Oil Active Ingredient Liposomes 0-0.32 phr.

[0012] The present invention is further configured such that the starch is one of corn starch, oxidized starch, acid starch or esterified starch.

[0013] The present invention is further configured such that the natural polysaccharide is one of gellan gum, xanthan gum, carrageenan or guar gum.

[0014] The present invention is further configured such that the aqueous active ingredient is one of anthocyanidin and curcumin.

[0015] The present invention is further configured such that the oily active ingredient is one of clove essential oil, cinnamon essential oil, tea tree essential oil or rose essential oil.

[0016] The present invention is further configured that the method for preparing the water / oil active ingredient liposome comprises the following steps:

[0017] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 are mixed in a molar ratio of 5.7:3.8:0.5, and dissolved by ultrasonication in chloroform. The completely dissolved solution is added dropwise into a PBS buffer solution, and the solution is filtered through an organic filter membrane. The water / oil active ingredient is added to the filtrate, and ultrasonication is performed for 30 minutes to obtain the water / oil active ingredient liposomes.

[0018] The method for preparing the starch-based intelligent response packaging film comprises the following steps:

[0019] A certain mass of water, starch, natural polysaccharide, glycerol and water / oil active ingredient liposomes are mixed, stirred at 95°C for 60 minutes, the starch paste is poured onto a glass plate, and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based intelligent responsive packaging film based on liposome-loaded water / oil active ingredients.

[0020] The present invention is further configured that the starch-based intelligent response packaging film based on liposome-loaded water / oil active ingredients exhibits acid-sensitive response.

[0021] Application of the starch-based intelligent response packaging film in food preservation.

[0022] The present invention has the following beneficial effects:

[0023] (1) The present invention has excellent antioxidant activity; (2) The present invention has excellent antibacterial activity; (3) The present invention can effectively extend the shelf life of fruits and vegetables and bring higher economic benefits; (4) The preparation method of the present invention is simple and easy to industrialize.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the morphology of the starch-based intelligent response packaging film of the present invention that keeps blueberries fresh for 9 days.

[0027] Figure 2 Schematic diagram of the antibacterial effect of the starch-based smart responsive packaging film of the present invention on Escherichia coli and Staphylococcus aureus.

[0028] Figure 3 This is a schematic diagram of the acid-sensitive response of the starch-based smart responsive packaging film of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention provides a starch-based smart response packaging film and a preparation method and application thereof. The starch-based smart response packaging film is composed of the following raw materials in terms of mass fraction:

[0031] Water 93.68-94 parts;

[0032] 4 parts starch;

[0033] 1 part of natural polysaccharide;

[0034] 1 part glycerin;

[0035] Water / Oil Active Ingredient Liposome 0-0.32 phr;

[0036] The starch is one of corn starch, oxidized starch, acid starch or esterified starch; the natural polysaccharide is one of gellan gum, xanthan gum, carrageenan or guar gum; the aqueous active ingredient is one of anthocyanin or curcumin; and the oily active ingredient is one of clove essential oil, cinnamon essential oil, tea tree essential oil or rose essential oil.

[0037] Specifically, the preparation method of the water / oil active ingredient liposomes comprises the following steps: dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 are mixed at a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform, and the completely dissolved solution is added dropwise into a PBS buffer solution, and the solution is filtered through an organic filter membrane, and the water / oil active ingredient is added to the filtrate, and ultrasonicated for 30 minutes to obtain the water / oil active ingredient liposomes.

[0038] The preparation method of the starch-based smart response packaging film comprises the following steps: mixing a certain mass of water, starch, natural polysaccharide, glycerol and water / oil active ingredient liposomes, stirring at 95° C. for 60 minutes, pouring the starch paste onto a glass plate, and drying it in a 60° C. vacuum drying oven for 12 hours to obtain the starch-based smart response packaging film based on liposome-loaded water / oil active ingredients.

[0039] Starch-based smart responsive packaging films based on liposome-loaded water / oil active ingredients exhibit acid-sensitive response.

[0040] The starch-based intelligent response packaging film is used in food preservation.

[0041] The performance test embodiment of the starch-based intelligent response packaging film based on liposome-loaded water / oil active ingredients is provided as follows:

[0042] Example 1

[0043] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 were mixed in a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform. The completely dissolved solution was added dropwise to a PBS buffer solution, and the solution was filtered through an organic filter membrane, and anthocyanin / clove essential oil was added to the filtrate, and ultrasonicated for 30 minutes to obtain anthocyanin / clove essential oil liposomes. Water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes were mixed in a mass ratio of 93.98:4:1:1:0.02, stirred at 95°C for 60 minutes, and the starch paste was poured onto a glass plate and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based smart responsive packaging film. The DPPH removal rate of the starch-based smart responsive packaging film was 54.5%;

[0044] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 shown.

[0045] Example 2

[0046] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 were mixed in a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform. The completely dissolved solution was added dropwise to a PBS buffer solution, and the solution was filtered through an organic filter membrane, and anthocyanin / clove essential oil was added to the filtrate, and ultrasonicated for 30 minutes to obtain anthocyanin / clove essential oil liposomes. Water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes were mixed in a mass ratio of 93.96:4:1:1:0.04, stirred at 95°C for 60 minutes, and the starch paste was poured onto a glass plate and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based smart responsive packaging film. The DPPH removal rate of the starch-based smart responsive packaging film was 61.2%;

[0047] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 shown.

[0048] Example 3

[0049] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 were mixed in a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform. The completely dissolved solution was added dropwise to a PBS buffer solution, and the solution was filtered through an organic filter membrane, and anthocyanin / clove essential oil was added to the filtrate, and ultrasonicated for 30 minutes to obtain anthocyanin / clove essential oil liposomes. Water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes were mixed in a mass ratio of 93.92:4:1:1:0.08, stirred at 95°C for 60 minutes, and the starch paste was poured onto a glass plate and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based smart responsive packaging film. The DPPH removal rate of the starch-based smart responsive packaging film was 65.7%;

[0050] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 shown.

[0051] Example 4

[0052] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 were mixed in a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform. The completely dissolved solution was added dropwise to a PBS buffer solution, and the solution was filtered through an organic filter membrane, and anthocyanin / clove essential oil was added to the filtrate, and ultrasonicated for 30 minutes to obtain anthocyanin / clove essential oil liposomes. Water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes were mixed in a mass ratio of 93.84:4:1:1:0.16, stirred at 95°C for 60 minutes, and the starch paste was poured onto a glass plate and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based smart responsive packaging film. The DPPH removal rate of the starch-based smart responsive packaging film was 72.9%;

[0053] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 shown.

[0054] Example 5

[0055] Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 were mixed in a molar ratio of 5.7:3.8:0.5, and ultrasonically dissolved with chloroform. The completely dissolved solution was added dropwise to a PBS buffer solution, and the solution was filtered through an organic filter membrane, and anthocyanin / clove essential oil was added to the filtrate, and ultrasonicated for 30 minutes to obtain anthocyanin / clove essential oil liposomes. Water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes were mixed in a mass ratio of 93.68:4:1:1:0.32, stirred at 95°C for 60 minutes, and the starch paste was poured onto a glass plate and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based smart responsive packaging film. The DPPH removal rate of the starch-based smart responsive packaging film was 75.6%;

[0056] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 As shown;

[0057] The starch-based smart responsive packaging film exhibited excellent antibacterial activity against Escherichia coli and Staphylococcus aureus. Figure 2 As shown;

[0058] Starch-based smart responsive packaging films exhibit acid-sensitive responses, such as Figure 3 shown.

[0059] Comparative Example 1 is similar to Example 1, except that water, corn starch, gellan gum, glycerin and anthocyanin / clove essential oil liposomes are in a mass ratio of 94:4:1:1:0, and the DPPH removal rate of the starch-based smart response packaging film is 28.6%;

[0060] The starch-based intelligent responsive packaging film preserves the morphology of blueberries for 9 days. Figure 1 shown.

[0061] The DPPH scavenging rate of the starch-based smart response packaging film based on liposome-loaded water / oil active ingredients in the embodiments of the present invention is measured according to T / SHRH006-2018.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Starch-based intelligent response packaging film, characterized in that: It is composed of the following raw materials in terms of mass fraction: Water 93.68-94 parts; 4 parts starch; 1 part of natural polysaccharide; 1 part glycerin; Water / Oil Active Ingredient Liposomes 0-0.32 phr.

2. The starch-based smart response packaging film according to claim 1, characterized in that: The starch is one of corn starch, oxidized starch, acid starch or esterified starch.

3. The starch-based smart response packaging film according to claim 1, characterized in that: The natural polysaccharide is one of gellan gum, xanthan gum, carrageenan or guar gum.

4. The starch-based smart response packaging film according to claim 1, characterized in that: The aqueous active ingredient is one of anthocyanidin and curcumin.

5. The starch-based smart response packaging film according to claim 1, characterized in that: The oily active ingredient is one of clove essential oil, cinnamon essential oil, tea tree essential oil or rose essential oil.

6. The starch-based smart response packaging film according to claim 1, characterized in that: The preparation method of the water / oil active ingredient liposome comprises the following steps: Dioleoylphosphatidylethanolamine, hemisuccinate cholesterol, and distearoylphosphatidylethanolamine-polyethylene glycol 2000 are mixed in a molar ratio of 5.7:3.8:0.5, and dissolved by ultrasonication in chloroform. The completely dissolved solution is added dropwise into a PBS buffer solution, and the solution is filtered through an organic filter membrane. The water / oil active ingredient is added to the filtrate, and ultrasonication is performed for 30 minutes to obtain the water / oil active ingredient liposomes.

7. The method for preparing the starch-based smart response packaging film according to any one of claims 1 to 6, comprising the following steps: A certain mass of water, starch, natural polysaccharide, glycerol and water / oil active ingredient liposomes are mixed, stirred at 95°C for 60 minutes, the starch paste is poured onto a glass plate, and placed in a vacuum drying oven at 60°C for 12 hours to obtain the starch-based intelligent responsive packaging film based on liposome-loaded water / oil active ingredients.

8. The method for preparing the starch-based intelligent responsive packaging film according to claim 7, characterized in that: Starch-based smart responsive packaging films based on liposome-loaded water / oil active ingredients exhibit acid-sensitive response.

9. Use of the starch-based smart response packaging film according to any one of claims 1 to 8 in food preservation.

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