A kind of preparation method and application of tender maple leaf natural dye

Abstract

The present invention relates to a preparation method and application of a natural dye for young maple leaves. The preparation method includes: (1) washing the collected young maple leaves with clear water, drying them in the air, and mechanically pulverizing them to obtain young maple leaf powder; (2) adding the tender maple leaf powder into an ethanol aqueous solution with a pH value of 8-10, stirring with a wooden stick and then standing still; (3) carrying out reflux extraction, heating the extract to 75-95° C., filtering and drying; ( 4) Utilize the method for underpressure distillation to obtain the concentrated tender maple leaf natural dye. The extraction process of the natural dye from tender maple leaves will not cause environmental pollution; the dyed fabric is soft to the touch, safe to wear, and has no carcinogenic or teratogenic reactions, and infants no longer need to worry about the harm of dyes on the fabric to children after wearing them. harm; and tender maple leaves are rich in raw materials, easy to extract, and stable in quality.

Description

technical field [0001] The invention relates to natural dyes and the field of application thereof, in particular to a preparation method and application of natural dyes from tender maple leaves. Background technique [0002] In today's society, both science and technology and social economy are developing rapidly, people's living standards are constantly improving, and the quality of life is also undergoing qualitative changes. More and more people will hope not only to eat healthy, but also to wear healthy. However, almost all of the dyes worn in daily life are chemically synthesized dyes, which not only cause harm to nature and people’s health during the production process, but also cause unnatural color of the fabric after the fabric is dyed, and it is also very uncomfortable for people to wear. Uncomfortable, especially for infants and young children, they like to put everything in their mouths, which is very dangerous. Contents of the invention [0003] The purpose ...

AI Technical Summary

Problems solved by technology

However, almost all of the dyes that are worn in daily life are chemically synthesized dyes. The dyes not only cause harm to nature and people’s health during the production process, but also cause the fabric’s color to look unnatural after the fabric is dyed, and it is also very uncomfortable for people to wear. Uncomfortable, especially for infants and young children, they like to put whatever they take in their mouth, very dangerous