Taro leaf dye extracting method, dyeing method and application

Abstract

The invention provides a taro leaf dye extracting method, a dyeing method and application, and belongs to the field of natural dye extracting methods. The method comprises the steps of taking fresh taro leaves of ripe taros, washing the fresh leaves clean, browning the fresh leaves, putting the browned taro leaves into hydrogen peroxide with a volume fraction of 2 to 4%, and soaking for 10 to 30min; then filtering, airing, mechanically smashing, adding into an ethanol solution with the weight of 5 to 10 times that of dried and browned taro leaves and a volume fraction of 25 to 45%, performing ultrasonic extraction for 150 to 300min under the condition that a temperature is 60 to 90 DEG C, filtering to obtain filtrate, enabling the filtrate to stand for 6 to 12h, and concentrating and drying to obtain dye powder. The taro leaf dye extracting method disclosed by the invention has the advantages that the brown taro leaves are selected and utilized to extract dye, experiments show that the dye is good redish brown and taupe dye applied to protein fabric, the problem that existing natural dye has poor color fastness is solved, low price and wide sources of raw materials are achieved, not only is dye production cost reduced, but also environment protection is achieved, and pollution is reduced.

Description

technical field [0001] The invention relates to the extraction method and application field of natural dyes, in particular to the extraction method, dyeing method and application of taro dye. Background technique [0002] Dyes are divided into two categories: natural dyes and synthetic dyes. Natural dyes have a long history of use in China. At present, synthetic dyes are mainly used in fabrics that are cheap and easy to obtain in large quantities. With the continuous enhancement of human health awareness and environmental protection concepts, developed The country took the lead in noticing the harm of synthetic dyes to the environment and health, and listed some highly carcinogenic and toxic dyes as banned dyes. These synthetic dye compounds are worn on the body, absorbed by the human body for a long time, and after activation, the human body Changes in the structure and function of cells, thus transforming into human disease-inducing factors. Therefore, natural dyes have o...

AI Technical Summary

Problems solved by technology

And natural dyestuff has following shortcoming: the first, source is limited, and raw material is difficult to collect, and cost is higher; The selection and staining method are related

[0003] Taro is widely planted in my country, especially in South China. When it is mature, people only eat its rhizome. A small amount of taro leaves are used as traditional Chinese medicine, and most of them are treated as waste, which pollutes the environment and wastes resources.

However, if this resource is to be fully utilized, its products must have higher advantages compared with other products of the same kind, otherwise, even if this resource is used, it will not achieve long-term development.

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