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CN-122011840-A - Mesoporous silica-camphor fruit anthocyanin composite material and preparation method and application thereof

CN122011840ACN 122011840 ACN122011840 ACN 122011840ACN-122011840-A

Abstract

The invention discloses a mesoporous silica-camphor fruit anthocyanin composite material, a preparation method and application thereof, wherein the composite material comprises mesoporous silica and camphor fruit anthocyanin loaded on the surface of the mesoporous silica and in a pore canal. The invention takes eutectic solvent as an extracting agent to extract anthocyanin from camphor fruits to obtain camphor fruit anthocyanin extracting solution, and the mesoporous silica carrier and the camphor fruit anthocyanin extracting solution are mixed and subjected to adsorption loading reaction, and after the reaction is finished, the composite material is obtained by separation, washing and drying, wherein the eutectic solvent consists of choline chloride and citric acid. The mesoporous silica-camphor fruit anthocyanin composite material provided by the invention provides a foundation for dyeing wood veneers, and improves the light fastness and performance of the wood veneers.

Inventors

  • Wu Fujuan
  • QI YIQING

Assignees

  • 南京林业大学

Dates

Publication Date
20260512
Application Date
20260211

Claims (9)

  1. 1. The mesoporous silica-camphor fruit anthocyanin composite material is characterized by comprising mesoporous silica and camphor fruit anthocyanin loaded on the surface and in a pore canal of the mesoporous silica.
  2. 2. The preparation method of the mesoporous silica-camphor fruit anthocyanin composite material is characterized by comprising the following steps of: extracting anthocyanin from the camphor fruits by taking a eutectic solvent as an extracting agent to obtain a camphor fruit anthocyanin extracting solution, mixing a mesoporous silica carrier with the camphor fruit anthocyanin extracting solution, carrying out adsorption loading reaction, and separating, washing and drying after the reaction is finished to obtain the composite material, wherein the eutectic solvent consists of choline chloride and citric acid.
  3. 3. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein the molar ratio of choline chloride to citric acid in the eutectic solvent is 1:3-4.
  4. 4. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein the water content of the eutectic solvent is 50% -70%.
  5. 5. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein the feed liquid ratio of the camphor fruits to the eutectic solvent is 1:15-1:25 g/mL.
  6. 6. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein in the process of extracting anthocyanin from camphor fruits, the extraction temperature is 55-70 ℃ and the extraction time is 60-90 min.
  7. 7. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein the adsorption load reaction is carried out under a variable temperature condition, the reaction temperature is changed between 40-60 ℃ and 4 ℃, and the total load time is 50-70 min.
  8. 8. The method for preparing the mesoporous silica-camphor fruit anthocyanin composite material according to claim 2, wherein the mass volume ratio of the mesoporous silica carrier to the anthocyanin extracting solution is 0.07-0.08 g/mL.
  9. 9. Use of the mesoporous silica-linalool fruit anthocyanin composite material according to claim 1 in wood staining.

Description

Mesoporous silica-camphor fruit anthocyanin composite material and preparation method and application thereof Technical Field The invention relates to the technical field of functional composite materials and wood dyeing, in particular to a composite material which utilizes eutectic solvent to efficiently extract camphor fruit anthocyanin and takes mesoporous silica as a carrier for load stabilization, a preparation method and application thereof, and can improve the light fastness and the color stability of wood veneers. Background With the increasing demands of people for natural pigments and environmental protection materials, the field of wood dyeing is also seeking a more green and efficient solution. The development of functional materials with good ultraviolet resistance becomes a focus of attention, and natural dyes of naphthoquinone and anthraquinone, such as natural pigment dyed fabrics extracted from lithospermum, turmeric, madder, henna, mulberry and other plants, have good ultraviolet protection capability and can be applied to the preparation of ultraviolet-resistant products. Researches show that the main components of the camphor fruit anthocyanin are paeoniflorin-3-arabinoside, paeoniflorin-3-xyloside and paeoniflorin-3-glucoside or derivatives thereof, and the substances with the structures also have certain ultraviolet resistance. However, the camphor fruit anthocyanin is easy to degrade under the conditions of illumination and the like, so that the light fastness of the camphor fruit anthocyanin in wood dyeing is poor, and the application of the camphor fruit anthocyanin in outdoor wood products is limited. Therefore, how to improve the stability and durability of the camphor fruit anthocyanin becomes a key problem of the camphor fruit anthocyanin in wood dyeing application. Mesoporous Silica (MSNs) is considered an ideal support material due to its high specific surface area, ordered pore structure and good uv shielding properties. Therefore, the development of the camphor fruit anthocyanin composite material with mesoporous silica as a carrier has important significance for improving the light resistance and the color stability of the anthocyanin on the surface of the wood. Disclosure of Invention In view of the above, the invention provides a mesoporous silica-camphor fruit anthocyanin composite material, a preparation method and application thereof, and the mesoporous silica-camphor fruit anthocyanin composite material provided by the invention provides a foundation for dyeing wood veneers, and improves the light fastness and performance of the wood veneers. The invention provides a mesoporous silica-camphor fruit anthocyanin composite material, which comprises mesoporous silica and camphor fruit anthocyanin loaded on the surface and in pore channels of the mesoporous silica, wherein the mesoporous silica has a high specific surface area, an ordered pore channel structure and good ultraviolet shielding performance. In another aspect, the invention provides a method for preparing a mesoporous silica-camphor fruit anthocyanin composite material, which comprises the following steps: extracting anthocyanin from the camphor fruits by taking a eutectic solvent as an extracting agent to obtain a camphor fruit anthocyanin extracting solution, mixing a mesoporous silica carrier with the camphor fruit anthocyanin extracting solution, carrying out adsorption loading reaction, and separating, washing and drying after the reaction is finished to obtain the composite material, wherein the eutectic solvent consists of choline chloride and citric acid. Further, the molar ratio of the choline chloride to the citric acid is 1:3-4. Further, the water content of the eutectic solvent is 50% -70%, and preferably, the water content of the eutectic solvent is 60%. Further, the feed liquid ratio of the camphor fruits to the eutectic solvent is 0.07-0.08 g/mL. Preferably, the ratio of the anthocyanin extract liquid of the camphor fruits to the anthocyanin extract liquid of the camphor fruits is 1:20 g/mL. Further, in the process of extracting anthocyanin from camphor fruits, the extraction temperature is 55-70 ℃ and the extraction time is 60-90 min. Preferably, the extraction temperature is 62 ℃. Preferably, the extraction time is 75 min. Further, the adsorption load reaction is carried out under a variable temperature condition, the reaction temperature is changed between 40-60 ℃ and 4 ℃, and the total load time is 50-70 min. Specifically, the load is 20-40 min at 40-60 ℃ and 30min at 4 ℃. Preferably, the total load time is 60 min, including 30min processed at 50 ℃. Preferably, the water content of the eutectic solvent is 60%. Further, the mass volume ratio of the mesoporous silica carrier to the anthocyanin extracting solution is 1:12-1:15 g/mL. Preferably, the mesoporous silica has a purity of 98%, an industrial grade particle size of 1000 nm and a pore size of 10: 10 nm. Compared with the prior art, the m