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Antibacterial preservative film, and preparation method and applications thereof

A fresh-keeping film and a technology for its use are applied in the field of fresh-keeping films containing lauroyl arginine ethyl ester salt and derivatives thereof, and achieve the effects of simple preparation, good stability and easy biological catabolism

Active Publication Date: 2019-10-22
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In summary, research on LAE has been carried out in the prior art, but there are no reports involving the use of LAE, or even LAE derivatives, for the preparation of anti-mold plastic wrap materials

Method used

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  • Antibacterial preservative film, and preparation method and applications thereof
  • Antibacterial preservative film, and preparation method and applications thereof
  • Antibacterial preservative film, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Preparation method of synthetic ion-pair compound of lauroyl arginine ethyl ester hydrochloride and nicotinic acid

[0065] Dissolve 2.0 g of sodium nicotinic acid (purchased from Tixiai (Shanghai) Chemical Industry Development Co., Ltd.) in 50 mL of water to prepare sodium nicotinic acid salt solution (A); 6.8 g of lauroyl arginine ethyl ester hydrochloride Dissolve in 40mL of water and heat to 90°C until all lauroyl arginine ethyl ester hydrochloride is dissolved to prepare an aqueous solution of lauroyl arginine ethyl ester hydrochloride (B); The saline solution (A) is slowly added to the lauroyl arginine ethyl ester hydrochloride solution (B), stirring constantly, reacting for 2 hours, cooling to room temperature, filtering, fully washing the precipitate with purified water, and drying the precipitate in vacuum at 60°C. 7.6 g of niacin ion pair compound is obtained.

Embodiment 2

[0066] Example 2: Analysis of the molecular formula and molecular weight of the compound of the nicotinic acid ion of ethyl lauroyl arginine

[0067] By mass spectrometry, 1 H-NMR, 13 The molecular formula of the compound obtained by C-NMR spectrum analysis is:

[0068] 1. Mass spectrometry (ESI) analysis

[0069] Cation B + The m / z of the molecular ion peak = 385.3, see figure 1 ;

[0070] Anion A - The m / z of the molecular ion peak = 122.1, see figure 2 .

[0071] The theoretical calculated value of the cation of the niacin ion pair compound is 507.4, and the measured value is consistent with the theoretical value.

[0072] 2.NMR analysis

[0073] Lauroyl arginine ethyl ester hydrochloride (see image 3 ), niacin 1 H-NMR (see Figure 4 ) And LAE niacin ion pair compound 1 H-NMR (see Figure 5 )Compared. Since the LAE ion-pair compound is in the process of salt formation, the peak shape and chemical shift of the ion-pair compound of lauroyl arginine ethyl ester change little, but all h...

Embodiment 3

[0074] Example 3: Preparation method of synthetic ion-pair compound of lauroyl arginine ethyl ester hydrochloride and tartaric acid

[0075] Dissolve 2.0 g of tartaric acid (purchased from Tixiai (Shanghai) Chemical Industry Development Co., Ltd.) in 50 mL of methanol, add equivalent NaOH, stir at room temperature until a white solid precipitates, filter with suction and wash with 30 mL of methanol three times to obtain sodium tartrate . Sodium tartrate is dissolved in 50mL of water to prepare a sodium tartrate solution (A); 5.6 g of lauroyl arginine ethyl ester hydrochloride is dissolved in 40 mL of water and heated to 90°C until the lauroyl arginine ethyl ester salt The acid salt is completely dissolved to prepare an aqueous solution of lauroyl arginine ethyl ester hydrochloride (B); the sodium tartrate solution (A) is slowly added to the aqueous solution of lauroyl arginine ethyl ester hydrochloride ( In B), continue to stir, react for 2 hours, cool to room temperature, filte...

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Abstract

The invention provides an antibacterial preservative film, and a preparation method thereof. The antibacterial preservative film comprises ethyl lauroyl arginate (LAE) or an ion pair derivative of ethyl lauroyl arginate. The antibacterial preservative film is nontoxic, is capable of inhibiting bacteria, is stable in performance, and is convenient to process.

Description

Technical field [0001] The invention relates to an antibacterial fresh-keeping film, in particular to a fresh-keeping film containing lauroyl arginine ethyl ester salt and its derivatives (ion pair compounds). The lauroyl arginine ethyl ester ion pair has an antibacterial effect and can help keep fresh While covering the fresh-keeping function, the film can also maintain stability and exert synergistic effects such as antibacterial. Background technique [0002] Cling film usually refers to a kind of film-like products with moderate oxygen permeability and moisture impermeability, which can adjust the oxygen content and moisture content around the products to be preserved, block dust in the air, and extend the shelf life of food. At present, there are three main types of common cling film products on the market: polyethylene (PE), polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC) cling film. These three types are all polymerized from petroleum-derived ethylene as a mas...

Claims

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Application Information

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IPC IPC(8): A01N25/34A01N47/44A01P3/00A23L3/3526A23L3/3535A23L3/3544A23L3/3553
CPCA01N25/34A01N47/44A23L3/3526A23L3/3535A23L3/3544A23L3/3553
Inventor 易正芳邵婷仇文卫王李婷刘明耀
Owner EAST CHINA NORMAL UNIV
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