Electrospinning nano-fiber membrane indicating food freshness and preparation method thereof
A technology for electrospinning nanofibers and nanofiber membranes, which is used in fiber processing, plant fibers, textiles, and papermaking, etc., can solve the problem of poor stability of anthocyanin liposomes, the synthesis method contains toxic and harmful substances, and cannot be used as an indicator. and other problems, to achieve the effect of high loading capacity and improving anti-interference ability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0038] A method for preparing a food freshness indicator electrospun nanofiber membrane, comprising the following steps:
[0039] Step S1, preparing anthocyanin liposomes by ethanol injection method;
[0040] Step S2, modifying chitosan on the surface of anthocyanin liposome;
[0041] Step S3, using electrospinning technology to prepare a freshness indicating electrospun nanofiber membrane.
[0042] In the step S1, anthocyanin liposomes are prepared by ethanol injection method, which specifically includes the following steps:
[0043] Step S1.1: dissolving lecithin and cholesterol with a mass ratio of 5-10:1 in absolute ethanol, and then stirring at room temperature to form a uniform mixed solution;
[0044] Step S1.2: Add the pH-indicating anthocyanins with a mass ratio of lecithin to pH-indicating anthocyanins of 5-10:1 into the phosphate buffer solution with pH=7, and stir evenly; then the solution is uniformly injected into the mixed solution in step S1.1, and finally s...
Embodiment 1
[0064] 1. Anthocyanin extraction from raw materials and calibration of anthocyanin concentration in the extract
[0065] The natural pigments allowed to be used in food in GB2760-2014 include black currant pigment, carrot pigment, roselle pigment, mulberry pigment, purple sweet potato pigment, purple cabbage pigment, blueberry pigment, black wolfberry pigment, etc. The listed pigments are pH Indicative anthocyanin pigment with pH indicating function. The extraction method of these pigments is to accurately weigh 5g of dried raw materials into a 250mL round bottom flask, the ratio of solid to liquid is 1:10, the extraction solvents are water and aqueous hydrochloric acid solution with a pH value of 2, and they are incubated at 60°C for 60min, and taken out. Filtrate, set the volume to 250mL, and adjust the pH value to 2, extract the anthocyanin aqueous solution, and use the vacuum freeze-drying method to concentrate to obtain solid pH-indicating anthocyanins.
[0066] Use the ...
Embodiment 2
[0080] 1. Anthocyanin extraction from raw materials and calibration of anthocyanin concentration in the extract
[0081] The natural pigments allowed to be used in food in GB2760-2014 include black currant pigment, carrot pigment, roselle pigment, mulberry pigment, purple sweet potato pigment, purple cabbage pigment, blueberry pigment, black wolfberry pigment, etc. The listed pigments are pH Indicative anthocyanin pigment with pH indicating function. The extraction method of these pigments is to accurately weigh 5g of dried raw materials into a 250mL round bottom flask, the ratio of solid to liquid is 1:10, the extraction solvents are water and aqueous hydrochloric acid solution with a pH value of 5, and they are incubated at 60°C for 60min, and taken out. Filter, set the volume to 250mL, and adjust the pH value to 5, extract anthocyanin aqueous solution, and use vacuum freeze-drying to concentrate to obtain solid anthocyanin.
[0082] Use the sulfuric acid-vanillin colorimet...
PUM
Property | Measurement | Unit |
---|---|---|
Concentration | aaaaa | aaaaa |
Concentration | aaaaa | aaaaa |
Concentration | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com