Extraction method of high-stability salix leaf pigment dye
A technology with high stability and extraction method, which is applied in the field of willow leaf pigment dye extraction, can solve the problems of ineffective use of salicylic acid and its derivatives, poor pigment stability and dyeing effect, and achieve high value Utilization, accelerated dissolution, and high stability effects
Inactive Publication Date: 2017-08-04
霍邱县淮美奇工艺品有限公司
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The invention discloses a method for extracting willow leaf pigment dyes with high stability. The alcohol extraction method is used to maximize the extraction of various pigments in willow leaves, which is more efficient than the traditional alkali extraction method. In the process, nano-silica is used as an auxiliary agent to speed up the dissolution of the pigment. At the same time, the amino-protected chitosan compound and the salicylic acid in the pigment undergo an effective esterification reaction to produce salicylated derivatives. , it has very good dyeing-assisting performance, and the pigment stability after chitosan modification is higher, and finally the modified pigment is saponified to make a water-soluble high-stable natural pigment dye, which realizes the high-efficiency of the pigment in willow leaves , Stable extraction, realizing the high-value utilization of willow leaves.
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