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KR-20260063976-A - Antifungal packaging comprising extracts derived from natural products

KR20260063976AKR 20260063976 AKR20260063976 AKR 20260063976AKR-20260063976-A

Abstract

The present invention relates to an antifungal packaging material comprising a natural product-derived extract. By coating the packaging material using a coating composition comprising an extract derived from a natural product such as a plant, the growth and proliferation of mold on the inside and outside of the packaging material can be inhibited, thereby maintaining the freshness of the packaged product for a long period of time.

Inventors

  • 고의석

Assignees

  • 주식회사 뉴로팩

Dates

Publication Date
20260507
Application Date
20241031

Claims (14)

  1. An antifungal coating composition comprising a natural product-derived extract.
  2. A composition for an antifungal coating according to claim 1, wherein the natural product is a plant.
  3. A composition for an antifungal coating according to claim 2, wherein the plant is one or more selected from the group consisting of Centella asiatica , horseradish ( Eutrema japonicum ), oregano ( Origanum vulgare ) and vanilla ( Vanilla planifolia ).
  4. An antifungal coating composition according to claim 1, wherein the concentration of the extract is 5 to 30% relative to the extract stock solution.
  5. An antifungal coating composition according to claim 1, wherein the fungus is one or more selected from the group consisting of Aspergillus , Penicillium , and Neurospora sp.
  6. An antifungal coating composition according to claim 5, wherein the genus of mold is Aspergillus niger or Aspergillus flavus , and the genus of blue mold is Penicillium corylophilum .
  7. Listing; and A coating layer disposed on one or both sides of the above-described surface; comprising, The above coating layer comprises a composition for antifungal coating, and The above antifungal coating composition comprises an extract derived from a natural product, an antifungal packaging material.
  8. In claim 7, the above description is selected from the group consisting of nylon (Ny), polyethyleneterephthalate (PET), low density polyethylene (LDPE), polypropylene (PP), polycarbonate (PC), poly(methyl methacrylate, PMMA), polyimide (PI), oriented polypropylene (OPP), casting polypropylene (CPP), biaxially oriented polypropylene (BOPP), polyethylene 2,6-dicarboxyl naphthalate (PEN), polyethersulfone (PES), polyester (PE), polystyrene (PS), modified polyvinyl alcohol (PVA), and mixtures thereof. One or more antifungal packaging materials.
  9. A coating step of coating an antifungal coating composition on one or both sides of a substrate; comprising A method for manufacturing an antifungal packaging material, wherein the above antifungal coating composition comprises a natural product-derived extract.
  10. A method for manufacturing an antifungal packaging material according to claim 9, wherein the coating step has a coating speed of the antifungal coating composition on the substrate of 40 to 80 m/min.
  11. A method for manufacturing an antifungal packaging material according to claim 9, wherein the coating step involves applying an amount of antifungal coating composition to a substrate of 8 to 10 g/ m² .
  12. A method for manufacturing an antifungal packaging material according to claim 9, wherein the method comprises a step of manufacturing a coating composition for manufacturing an antifungal coating composition.
  13. A method for manufacturing an antifungal packaging material according to claim 9, wherein the method comprises a drying step of drying an antifungal coating composition coated on one or both sides of a substrate.
  14. A method for manufacturing an antifungal packaging material according to claim 13, wherein the drying step is performed at 75 to 95°C.

Description

Antifungal packaging comprising extracts derived from natural products The present invention relates to an antifungal packaging material comprising an extract derived from a natural product, and more specifically, to a packaging material capable of maintaining the freshness of a packaged product by inhibiting the growth of mold through coating the packaging material using a coating composition comprising an extract derived from a natural product such as a plant. Recently, with the increase in living standards and the rise in single-person households, the use of packaging materials for food delivery or storage has increased significantly. These food packaging materials are required to not only protect the contents but also to possess the functionality to maintain the freshness and quality of the packaged product. In particular, if the packaged product is a fresh food, moisture inside the packaging can cause various harmful bacteria to multiply, rapidly degrading the product's freshness and potentially leading to poor food hygiene. Furthermore, in the case of bread products, there is a high risk that mold will proliferate within a few days of packaging completion and the start of distribution, resulting in a complete loss of marketability. Accordingly, technology is being developed to apply antifungal synthetic resins capable of inhibiting the growth and proliferation of molds to packaging materials; however, in such cases, there is a concern that harmful substances leaching from the synthetic resin may have adverse effects on the human body, and problems arise regarding the release of endocrine disruptors during the disposal of packaging materials. Therefore, in developing antifungal packaging materials to maintain the freshness of packaged products susceptible to mold, such as bread products, there is a need to develop eco-friendly antifungal packaging materials that minimize adverse effects on the human body and the environment, rather than merely aiming to maintain the freshness of the product itself. Figure 1 is a photograph showing eight types of extracts diluted according to concentration from a natural product extract stock solution prepared according to one embodiment of the present invention. The present invention will be explained in more detail below through the following examples. However, these examples are merely illustrative of the invention, and the scope of the invention is not limited by these examples. Throughout this specification, "%" used to indicate the concentration of a particular substance is (weight/weight)% for solid/solid, (weight/volume)% for solid/liquid, and (volume/volume)% for liquid/liquid, unless otherwise noted. Unless otherwise specified, all numbers, values, and/or expressions used herein to denote ingredients, reaction conditions, and the content of ingredients shall be understood to be modified by the term “approximately” in all cases, as these numbers are essentially approximations reflecting the various uncertainties of measurement that occur in obtaining these values among others. Additionally, where numerical ranges are disclosed in this specification, such ranges are continuous and, unless otherwise specified, include all values from the minimum value of such range up to the maximum value including the maximum value. Furthermore, the term "or" in this specification is intended to mean an implied "or" rather than an exclusive "or." That is, where the combination or use of the configurations is not otherwise specified or is not evident from the context, i.e., where X includes A; X includes B; or X includes both A and B, "X includes A or B" may be applied to either of these cases. Furthermore, throughout the specification, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Preparation Example 1. Preparation of a composition for antifungal coating An antifungal active coating composition based on a natural product-derived extract was prepared. Specifically, to obtain natural product-derived extracts, sufficient amounts of Centella asiatica , Eutrema japonicum , Oregano vulgare , and Vanilla planifolia were obtained, and then Centella asiatica extract, Eutrema japonicum extract, Oregano vulgare extract, and Vanilla planifolia extract were prepared by cutting, grinding, and extracting each plant. Each prepared extract stock solution was mixed with a dilution solution to obtain high-concentration extracts (30%) and low-concentration extracts (5%). The results of observing each obtained extract are shown in Figure 1, and the ethanol dispersibility of each extract at different concentrations and the amount added during the coating process are shown in Table 1 below. Components of a coating compositionDispersion assessmentCoating work input amount (kg)noteCentella asiatica extractHigh concentration (30%)Good15Precipitation occurs when