Corn starch film containing rutin composite nanoparticles and preparation method of corn starch film

A technology of composite nanoparticles and corn starch, which is applied in the field of corn starch film containing rutin composite nanoparticles and its preparation, can solve the problems of instability and easy decomposition of natural active ingredients, and achieve good combination and compatibility, resistance Effect of increased oxidation properties, increased breaking strength and elongation at break

Active Publication Date: 2017-05-10
QINGDAO AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, natural active ingredients are often unstable, easy to decompose when exposed to light, and insoluble in water-based foods. Therefore, the antibacterial and antioxidant delivery system of natural active ingredients has become a research hotspot in recent years.

Method used

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  • Corn starch film containing rutin composite nanoparticles and preparation method of corn starch film
  • Corn starch film containing rutin composite nanoparticles and preparation method of corn starch film
  • Corn starch film containing rutin composite nanoparticles and preparation method of corn starch film

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Embodiment 1

[0037] 1. Preparation method and film thickness, mechanical properties, light transmittance, water solubility, moisture permeability and surface color of corn starch film containing rutin composite nanoparticles

[0038] 1, the preparation method of rutin composite nanoparticles

[0039]Dissolve 0.1g of rutin and 1.0g of zein in 20mL of 80% ethanol-water solution respectively and mix them; then quickly add 50mL of 2% sodium caseinate solution to the mixed solution and keep stirring; then put the above mixed solution at 45 Rotary evaporation at °C for 10 minutes, centrifugation at 4000 rpm for 10 minutes to remove insoluble matter, and then freeze-drying for 24 hours to obtain a powder that is the rutin composite nanoparticles.

[0040] 2. Preparation method of rutin composite nanoparticle film

[0041] Take by weighing 5g cornstarch, 3g glycerol, add in the beaker that fills 80mL ultrapure water, be that mass fraction is 0%, 0.5%, 1%, 2%, 4%, 10% said rutin composite nanopart...

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Abstract

The invention provides a corn starch film containing rutin composite nanoparticles and a preparation method of the corn starch film. The rutin composite nanoparticles in the corn starch film are prepared by embedding rutin in corn prolamine. The rutin composite nanoparticles have the performance of slowly releasing the rutin, so that the corn starch film prepared by the method has long-acting oxidation resistance. According to the corn starch film disclosed by the invention, instruments of a physical property determinator, a Fourier transform infrared spectrum analyzer, a scanning electron microscope and the like are adopted for analyzing the representational structure of the corn starch film, and the light transmittance, the water solubility, the moisture permeability, the surface color, the mechanical performance, the slow release efficiency and the oxidation resistance of the corn starch film are determinated. A result shows that after the rutin composite nanoparticles are added in the corn starch film, the property of the corn starch film is improved to some extent; discovered by determination on the property of the corn starch film, hydrogen bonds and electrostatic interaction can be formed by the rutin composite nanoparticles and a starch substrate, the property of the corn starch film is strengthened to a certain degree, and the corn starch film is enabled to have a certain slow release ratio and stronger oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of nano-packaging films, and in particular relates to a corn starch film containing rutin composite nanoparticles and a preparation method thereof. Background technique [0002] Protecting food quality and prolonging food shelf life is a long-term task in the field of food science, and the destruction of food quality and the growth of microorganisms mainly occur on the surface of food. Therefore, adding antibacterial and antioxidant ingredients to food contact materials can effectively prevent food Spoilage, prolonging the shelf life of food. [0003] Some natural polymers have film-forming properties and are favored due to their environmental degradability. Common natural polymer materials that are easy to form films include: proteins, polysaccharides, and animal and vegetable oils. Among them, starch is a kind of renewable natural polymer compound with the most extensive sources and the cheapest cost. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L89/00C08L99/00C08K5/053
CPCC08J5/18C08J2303/02C08J2489/00C08L3/02C08L2201/08C08L2203/16C08L2205/025C08L2205/035C08L89/00C08L99/00C08K5/053
Inventor 张双灵
Owner QINGDAO AGRI UNIV
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