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Preparation method of liquid plant dye

A plant dye and plant raw material technology, applied in the field of plant dye preparation, can solve the problems of increased chromatic light interference, increased floating color, color purity and color fastness, etc., to achieve less floating color, ease of difficulty, and color purity Improved effect

Inactive Publication Date: 2009-11-18
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the extensive use of additives, the interference of various additives on the color light increases, and the floating color increases, which affects the purity of color and color fastness.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0016] A kind of liquid vegetable dye preparation method of the present invention comprises the following steps:

[0017] a. select plant raw materials, add fermentation strains and ethanol solution after crushing to ferment;

[0018] b. extract the vegetable dye from the solution obtained in step a and concentrate and distill under reduced pressure to make a concentrated dye solution;

[0019] c. Add additives to the dye concentrate to prepare liquid dye.

[0020] The plant raw material is a yellow series plant, which can be one or more combinations of rhubarb, turmeric, coptis, gardenia, and Sophora japonica, wherein the concentration of each liter of solution after fermentation in step a is 0.5-3.0g / L sodium hydroxide, the fermented strain is distiller's yeast or saccharomyces, and its consumption is 0.5~10g / kg. Among them, rhubarb refers to the dried roots and rhizomes of rhubarb palmatum, rhubarb tangutica and medicinal rhubarb of the Polygonaceae plant. Turmeric refer...

Embodiment 1

[0031] Select the rhubarb plant, wash, dry, crush and pass through 10 meshes. Weigh 500g of plant materials and add 0.5g of distiller's yeast and an ethanol solution with a concentration of 10%, filter after 48 hours of fermentation. Add 0.3 g of sodium hydroxide per liter of solvent, the ratio of solid to liquid is 1:10, and extract at a temperature of 80° C. for 4 hours. Distill the dye extract under reduced pressure to make about 100ml of dye concentrate, and add 1g / L propylene glycol and sodium benzoate.

Embodiment 2

[0033] Select the turmeric plant, wash, dry, crush and pass through 10 meshes. Weigh 500g of plant materials and add 0.1g of distiller's yeast and an ethanol solution with a concentration of 15%, filter after 48 hours of fermentation. Add 0.5 g of sodium hydroxide per liter of solvent, the ratio of solid to liquid is 1:10, and extract at a temperature of 80° C. for 4 hours. Distill the dye extract under reduced pressure to make about 100ml of dye concentrate, and add 1g / L propylene glycol and sodium benzoate.

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Abstract

The invention discloses a preparation method of a liquid plant dye, comprising the following steps of: firstly selecting plant materials, crushing, then adding fermenting strain and alcohol solution for fermentation, extracting the obtained solution, reducing pressure, concentrating, distilling, preparing dye concentrated solution, adding an auxiliary agent in the dye concentrated solution and preparing liquid dye. The invention has rich resource of utilized plants and simple preparation method, and does not cause pollution of chemical synthetic dye to the environment in the preparation process; the prepared dye has natural and elegant color, does not have hazardous effect on human body, is applied to clean production in the textile industry and can be produced in large scale; and based on the traditional process, the invention adopts modern means and improves the extraction process so as to facilitate the storage and transportation.

Description

technical field [0001] The invention relates to a method for preparing vegetable dyes, in particular to a method for preparing liquid vegetable dyes. Background technique [0002] For a long time, plant dyes have appeared in the form of powder and granular commodities, mainly for the convenience of storage and transportation and cost considerations, but in order to solve problems such as dust flying, wettability, fluidity, and dispersibility in the dye preparation process , had to use a lot of additives. Due to the extensive use of additives, the interference of various additives on the color light increases, and the floating color increases, so that the color purity and color fastness are also affected. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing liquid vegetable dyes, which can facilitate storage and transportation, reduce costs, reduce the amount of auxiliary agents used, and ensure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
Inventor 刘祥霞王少华狄剑锋贾永堂杜文琴关劲良
Owner WUYI UNIV
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