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Biological composite fresh-keeping agent containing natural essential oil chitosan nanoparticles, preparation method of biological composite fresh-keeping agent, and application of biological composite fresh-keeping agent to food processing

A technology of chitosan nanometer and natural essential oil, which is applied in application, food preservation, fruit and vegetable preservation, etc., can solve the problems of easy volatilization of active ingredients, limited application, easy volatilization, etc., and achieves excellent antibacterial and antioxidative dual effects, Significant antibacterial properties, beneficial to human health

Pending Publication Date: 2021-01-12
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the active ingredients of plant essential oils are volatile, generally contain the unique smell of this plant, and are strong, and the essential oils are almost insoluble in water.
Plant essential oils are sensitive to temperature, especially their active ingredients are volatile, generally need to be stored at low temperature away from heat sources, and essential oils are sensitive to sunlight, these characteristics limit their application in the field of food additives

Method used

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  • Biological composite fresh-keeping agent containing natural essential oil chitosan nanoparticles, preparation method of biological composite fresh-keeping agent, and application of biological composite fresh-keeping agent to food processing
  • Biological composite fresh-keeping agent containing natural essential oil chitosan nanoparticles, preparation method of biological composite fresh-keeping agent, and application of biological composite fresh-keeping agent to food processing
  • Biological composite fresh-keeping agent containing natural essential oil chitosan nanoparticles, preparation method of biological composite fresh-keeping agent, and application of biological composite fresh-keeping agent to food processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 4mL of natural peppermint essential oil (EO) into a glass sample bottle, stir magnetically at 1200rpm, heat at 160°C for 0.5h, stop heating, continue stirring, and cool to room temperature naturally; then use PVDF (polyvinylidene fluoride resin) with a pore size of 0.45μm ) through a microporous membrane, and the filtrate was collected to obtain natural tea tree essential oil microparticle liquid (EO-NPs) containing nanoparticles, and stored at 4°C for future use. Weigh 20 mg of chitosan, dissolve it with 1% acetic acid solution, stir at 20°C for 12 hours, and filter through a 1 μm microporous membrane to obtain a chitosan solution. Add 1% Tween-80 (HLB 15.9) and heat at 60°C for 2h. Chitosan solutions with different concentrations can be prepared according to needs. Weighed 2 mg of the above-mentioned natural tea tree essential oil microparticle solution (EO-NPs), dissolved in 2 mL of dichloromethane to obtain an oil phase. Then it was slowly added dropwise to t...

Embodiment 2

[0029] A preservative composition, consisting of the following components: 1 part of nisin, natural essential oil chitosan nanoparticles (CS / EO NPs NPS) 1 part.

[0030] The application of the biocomposite preservative containing natural essential oil chitosan nanoparticles comprises the following steps:

[0031] (1) Soak a certain amount of cauliflower in vinegar overnight, drain it and put it in a pot, add some cooking oil, red pepper, garlic, a small amount of salt and some condiments and fry until mature.

[0032] (2) Prepare 0.2 g of composite antistaling agent according to the above weight ratio. Add the above-mentioned composite antistaling agent before cooking the 500g low-salt cooked cauliflower product, mix well, put it into a packaging bag, and vacuum-pack or modify-atmosphere package.

[0033](3) Refrigerate the packaged cooked low-salt cauliflower product at a temperature of 1-4°C.

[0034] (4) The storage period of the product obtained by the above method rea...

Embodiment 3

[0037] A preservative composition, consisting of the following components: 1 part of nisin, natural essential oil chitosan nanoparticles (CS / EO NPs NPS) 2 copies.

[0038] The application of the biocomposite preservative containing natural essential oil chitosan nanoparticles comprises the following steps:

[0039] (1) Soak a certain amount of cauliflower in vinegar overnight, drain it and put it in a pot, add some cooking oil, red pepper, garlic, a small amount of salt and some condiments and fry until mature.

[0040] (2) Prepare 0.3g of composite antistaling agent according to the above weight ratio. Add the above-mentioned composite antistaling agent before cooking the 500g low-salt cooked cauliflower product, mix well, put it into a packaging bag, and vacuum-pack or modify-atmosphere package.

[0041] (3) Refrigerate the packaged cooked low-salt cauliflower product at a temperature of 1-4°C.

[0042] (4) The storage period of the product obtained by the above method r...

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Abstract

The invention discloses a biological composite fresh-keeping agent containing natural essential oil chitosan nanoparticles. The biological composite fresh-keeping agent exists in a form of solid powder and comprises the following solids in proportion by weight: 1 to 2 parts of nisin and 1 to 2 parts of natural essential oil chitosan nanoparticles (CS / EONPs NPS). The invention also discloses application of a fresh-keeping agent formula to food processing; the efficacies of fresh keeping and corrosion prevention are achieved; the rotting and deterioration speed of food can be decelerated; and abiological preservative of nisin and pure natural essential oil are effectively utilized, and the storage life is effectively prolonged. The processing method is simple and convenient, raw materials are safe, and the production cost is low.

Description

technical field [0001] The invention belongs to the related technical fields of food preservation and storage, additives, nanomaterials, etc., and specifically relates to a preparation method of a biocomposite preservative containing natural essential oil chitosan nanoparticles and its application in low-salt cooked cauliflower processed food. Background technique [0002] Cauliflower is an annual plant of the Brassica family. Cauliflower is rich in vitamin C and has anti-cancer effects. The average nutritional value and disease prevention effect far exceed other vegetables. A new study by researchers at the University of California in the United States found that compounds in cauliflower are of great benefit in enhancing human immunity. Cruciferous vegetables like broccoli and kale produce a compound called DIM when they are chewed and digested. Studies in animals have shown that DIM does prevent the growth of certain cancer cells and may help boost immunity. Previous st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154
CPCA23B7/154A23V2002/00
Inventor 石玉刚朱陈敏蒋来
Owner ZHEJIANG GONGSHANG UNIVERSITY
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