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Cottonseed hull natural dye extraction method and dyeing application

A technology of natural dyes and extraction methods, applied in the application field of natural dyes, can solve the problems of poor dyeing performance, low dyeing uptake rate, etc., and achieve the effects of good dyeing color fastness, wide sources and increasing dyeable range.

Active Publication Date: 2016-09-21
山东巧妻食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cottonseed hulls are the shells left after cottonseeds are separated by shelling machines. At present, cottonseed hulls are mainly used for: breeding edible fungi, raising livestock as feed, and preparing agricultural fertilizers. These uses do not carry out deep processing of cottonseed hulls, and their use value is far away. Not only that, but also has a large space for development and application. Studies have shown that it contains a large amount of pigment components. At present, relevant reports on the application of cottonseed hulls as dyes indicate that the dyeing rate of cottonseed hulls is low and the dyeing performance is not good. good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Extract natural dye from cotton seed hull according to the following method 1:

[0025] Step 1. Crush 5kg of cottonseed hull into 30 mesh powder, add it to 10kg of 0.5% mass fraction of sodium hydroxide aqueous solution and soak for 2 hours at a temperature of 50℃, and then take the swollen cottonseed hull powder and freeze it in the refrigerator after filtering. To -20°C, immediately add 20kg of ethanol aqueous solution with a mass fraction of 50% and a temperature of 70°C for ultrasonic extraction. The extraction time is 90 minutes and the ultrasonic frequency is 30KHZ. After extraction, filter to obtain the extract;

[0026] Step 2: Rotate and concentrate the extract in step 1 in a vacuum at 55°C to obtain a paste, and then dry the paste at 50°C into powder to obtain 15.5 g of natural cottonseed hull dye;

[0027] Dyeing solution: take 8g cotton seed hull natural dye, 2g aluminum potassium sulfate dodecahydrate, 25g glucose mordant and dissolve it in 1000g water;

[0028] Dy...

Embodiment 2

[0033] Extract natural dye from cotton seed hull according to the following method 2:

[0034] Step 1. Crush 5kg of cottonseed hulls into 40 mesh powder, add 10kg of 0.5% mass fraction of sodium hydroxide aqueous solution and soak for 2 hours at a temperature of 40℃, and then take the swollen cottonseed hull powder and freeze it in the refrigerator after filtration. To -20°C, immediately add 15kg of ethanol aqueous solution with a weight fraction of 40% and a temperature of 70°C for ultrasonic extraction. The extraction time is 80 minutes and the ultrasonic frequency is 28KHZ. After extraction, filter to obtain the extract;

[0035] Step 2: Concentrate the extract in step 1 with vacuum rotation at 50°C to obtain a paste, and then dry the paste at 50°C into powder to obtain 15.0g of cottonseed hull natural dye;

[0036] Dyeing solution configuration: take 5g cotton seed hull natural dye, 2g ferrous sulfate, 20g glucose mordant and dissolve it in 1000g water;

[0037] Dyeing: Immerse 50...

Embodiment 3

[0041] Extract natural dye from cotton seed hull according to the following method 3:

[0042] Step 1. Crush 5kg of cottonseed hulls into 30 mesh powder, add 15kg of 0.5% mass fraction of sodium hydroxide aqueous solution and soak for 2 hours at a temperature of 50℃, and then take the swollen cottonseed hull powder and freeze it in the refrigerator. To -20°C, immediately add 20kg of ethanol aqueous solution with a mass fraction of 55% and a temperature of 60°C for ultrasonic extraction, the extraction time is 85 minutes, the ultrasonic frequency is 33KHZ, and the extract is filtered after extraction;

[0043] Step 2: Concentrate the extract in step 1 under vacuum rotation at 55°C to obtain a paste, and then dry the paste at 50°C to form a powder to obtain 15.8 g of cotton seed hull natural dye;

[0044] Dyeing solution: Take 10g cotton seed hull natural dye, 3g aluminum potassium sulfate dodecahydrate, 40g glucose mordant and dissolve in 1000g water;

[0045] Dyeing: immerse 50g of si...

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Abstract

The invention discloses a cottonseed hull natural dye extraction method and dyeing application and belongs to the application field of natural dyes. The extraction method includes the steps that cottonseed hulls are smashed into powder and soaked in a sodium hydroxide aqueous solution for 2 h, the cottonseed hull powder obtained after filtering is frozen to -20 DEG C, after being taken out, the cottonseed hull powder is immediately added into an ethanol aqueous solution with the mass being 3-5 times that of the cottonseed hull powder, the mass fraction being 40-60% and the temperature being 60-70 DEG C for heat preservation and ultrasonic extraction, filtering is conducted after extraction to obtain an extraction solution, and rotary concentration and drying are conducted to obtain the powder, namely, a cottonseed hull natural dye. The dye is good in dyeing color fastness on protein type cloth, the cloth is safe to wear, and carcinogenic and teratogenetic effects or anaphylaxis is avoided; compatibility with the ecological environment is good, and the dye is biodegradable. The raw material, namely, the cottonseed hulls, is wide in source, the price is low, natural resources are fully used, and market prospects are very wide.

Description

Technical field [0001] The invention is a natural dye application field. It involves a natural dye extraction method and dye application of cottonseed shells. It is more specifically for dyeing applications for protein fiber fabrics. Background technique [0002] Natural dyes refer to dyes obtained from natural raw materials such as plants and animals, and have a long application history in human development.Natural dye is soft, non -toxic and harmless, has no allergies and carcinogenicity to the skin, has good biochemical degradation and environmental compatibility. In addition to dyeing function, it also has various functions such as drugs and spices.During the dyeing process, its drugs and aroma are absorbed by the fabric and have special health functions to the human body.The international research on natural dye dyeing performance is mainly concentrated in Asia, especially India and Japan. The development of natural dyes in my country is in a positive exploration. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00D06P1/34D06P1/651D06P1/673D06P3/04D06P3/14D06P5/10
CPCC09B61/00D06P1/34D06P1/65118D06P1/67341D06P1/6735D06P3/04D06P3/14D06P5/10
Inventor 孟德旺
Owner 山东巧妻食品科技有限公司
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