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Preparation method of LAE and plant essential oil composite antibacterial agent and degradable packaging film

A compound antibacterial agent and plant essential oil technology, which is applied in botany equipment and methods, plant growth regulators, fungicides, etc., can solve the problem of low thermal stability of antibacterial film, improve antibacterial and fresh-keeping ability, and improve use safety , the effect of reducing the amount of addition

Active Publication Date: 2021-08-31
上海林挚智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the limitations of plant essential oils and LAE in the actual application process of existing food preservation, and the problem of low thermal stability when extrusion blow molding is used to prepare antibacterial films, and propose a method using hydroxypropyl-β- Cyclodextrin has a unique cavity structure that is hydrophilic on the outside and hydrophobic on the inside and its co-emulsification with LAE embedding and emulsifying LAE and plant essential oils, improving the thermal stability and utilization of the two antibacterial materials, and improving both The impact on food odor, and then mixed with degradable materials with low thermal processing temperature by extrusion thermal processing, and using the synergistic antibacterial effect of plant essential oils and LAE, a safe and efficient composite antibacterial agent is obtained. Preparation method of antibacterial packaging film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dissolve hydroxypropyl-β-cyclodextrin powder (3% w / v) in 100 mL of pure water at room temperature, then add N α - After the solid powder of lauroyl-L-arginine ethyl ester hydrochloride (1% w / v) is fully dissolved, add cinnamon essential oil (3% v / v) drop by drop, and continue to stir for 2 h with a high-speed disperser at 18000 r / min for 5 min, and finally at 450 W power, ultrasonic treatment for 10 min to obtain hydroxypropyl-β-cyclodextrin / cinnamon essential oil / N α -Lauroyl-L-arginine ethyl ester hydrochloride compound antibacterial agent.

[0020] The resulting composite antibacterial agent was spray-dried, the inlet temperature of the spray drier was 150°C, the outlet temperature was up to 100°C, the rotational speed of the atomizer was 30 Hz, and the feed rate was 25 r / min to obtain a composite antibacterial agent solid powder .

[0021] Put the starch in a high-speed mixer, add 5% solid powder of compound antibacterial agent, 1% stearic acid, and 20% glycerin ...

Embodiment 2

[0025] Dissolve hydroxypropyl-β-cyclodextrin powder (5% w / v) in 100 mL of pure water at room temperature, then add N α - After the solid powder of lauroyl-L-arginine ethyl ester hydrochloride (2% w / v) is fully dissolved, add clove essential oil (4% v / v) drop by drop, continue to stir for 2 h, and use a high-speed disperser at 18000 r / min for 5 min, and finally at 450 W power, ultrasonic treatment for 10 min to obtain hydroxypropyl-β-cyclodextrin / clove essential oil / N α -Lauroyl-L-arginine ethyl ester hydrochloride compound antibacterial agent.

[0026] The resulting composite antibacterial agent was spray-dried, the inlet temperature of the spray dryer was 150°C, the outlet temperature was up to 100°C, the rotational speed of the atomizer was 25 Hz, and the feed rate was 25 r / min to obtain a composite antibacterial agent solid powder .

[0027] Place PLA (polylactic acid) and PHB (poly-β-hydroxybutyric acid) in a high-speed mixer at a certain mass ratio (3:1), then add 7% c...

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Abstract

According to a preparation method of an LAE and plant essential oil composite antibacterial agent and a degradable antibacterial packaging film, the composite antibacterial agent is prepared by utilizing the synergistic emulsification effect of LAE and hydroxypropyl-beta-cyclodextrin and embedding LAE and plant essential oil by utilizing the cavity structure of the hydroxypropyl-beta-cyclodextrin, and the composite antibacterial agent is mixed with a degradable material with lower hot processing temperature through extrusion hot processing to obtain the degradable antibacterial packaging film. The surface active agent LAE and hydroxypropyl-beta-cyclodextrin are used for synergistic emulsification to enhance the embedding emulsification effect, and the thermal stability of the composite antibacterial agent is improved through protection of the cavity structure on LAE and plant essential oil. By compounding the composite antibacterial agent with the degradable material with low thermal processing temperature, the utilization degree and the antibacterial effect are further improved, the interaction with other substances in food is reduced, a synergistic antibacterial effect is achieved, the addition amount of each antibacterial agent can be reduced, and the use safety and antibacterial and fresh-keeping capabilities are improved.

Description

technical field [0001] What the present invention relates to is the preparation method of antibacterial material, particularly a kind of N α - Lauroyl-L-arginine ethyl ester hydrochloride and plant essential oil composite antibacterial and degradable antibacterial packaging film and a preparation method thereof, belonging to the technical field of food preservation. Background technique [0002] Plant essential oils are metabolites with aromatic odor produced by plants, insoluble in water but easily soluble in organic solvents such as ethanol. As a natural extract, plant essential oil has broad-spectrum antibacterial properties, but it has disadvantages such as volatile, easy to oxidize, strong smell, and large amount of use during use. N α - Lauroyl-L-arginine ethyl ester hydrochloride (N α -lauroyl-L-arginateethylenester, LAE for short) is a cationic surfactant, which has high inhibitory activity against a variety of food-borne pathogens, but LAE is easy to interact wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K5/00C08K5/31C08J5/18C08L3/02C08L67/04C08K5/09C08K5/053A01N25/30A01N25/26A01N65/24A01N65/28A01N47/44A01P3/00A01P1/00
CPCC08K9/10C08K5/0058C08K5/31C08J5/18A01N25/30A01N25/26A01N65/24A01N65/28A01N47/44A01N65/00C08J2303/02C08J2367/04C08J2467/04C08K5/09C08K5/053
Inventor 汤晓智徐瑶瑶高成成孟令晗侯克洪
Owner 上海林挚智能科技有限公司
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