阅读说明：本技术 洋葱皮染液的提取方法、洋葱皮染液及其在蛋白质纺织品中的应用 (Extraction method of onion skin dye liquor, onion skin dye liquor and application of onion skin dye liquor in protein textiles ) 是由 董凤春 贾永堂 彭伟航 于 2019-10-09 设计创作，主要内容包括：本发明实施例提供了洋葱皮染液的提取方法、洋葱皮染液及其在棉织物染色中的应用。本发明实施例的提取方法,先将洋葱皮洗净烘干,再用提取剂在恒温、震荡和超声联用下对洋葱皮进行浸提处理,即可得到洋葱皮染液,不仅解决了洋葱皮作为垃圾难以处理的问题,还实现了废物利用。该洋葱皮染液成本低廉,原料易得,适用于蛋白质纺织品的染色。洋葱皮染液与蛋白质纺织品的亲和性强,上染所需时间短,30min染色后干湿摩擦牢度可达4.5,染色后织物的k/s值达12.6。(The embodiment of the invention provides an extraction method of an onion skin dye solution, the onion skin dye solution and application of the onion skin dye solution in cotton fabric dyeing. According to the extraction method provided by the embodiment of the invention, the onion skin is cleaned and dried, and then the onion skin is subjected to extraction treatment under the combination of constant temperature, vibration and ultrasound by using the extractant, so that the onion skin dye liquor can be obtained, the problem that the onion skin is difficult to treat as garbage is solved, and the waste utilization is realized. The onion skin dye solution has low cost and easily obtained raw materials, and is suitable for dyeing protein textiles. The onion skin dye liquor has strong affinity with protein textiles, the time required for dyeing is short, the dry and wet rubbing fastness can reach 4.5 after 30min of dyeing, and the k/s value of the dyed fabrics reaches 12.6.)

1. The extraction method of the onion skin dye solution is characterized by comprising the following steps:

s1: drying onion skin, adding an extracting agent, and leaching at constant temperature under the conditions of vibration and ultrasound to obtain a crude extract;

s2: and filtering the crude extract to obtain the onion skin dye liquor.

2. The method for extracting onion skin dye liquor as claimed in claim 1, wherein the extractant is ethanol or water.

3. The method for extracting the onion skin dye liquor as claimed in claim 1, wherein in step S1, the mass ratio of the extractant to the onion skin is (20-30): 1.

4. the method for extracting onion skin dye liquor as claimed in claim 1, wherein the power of the ultrasonic condition is 180 w.

5. The method for extracting the onion skin dye liquor as claimed in claim 1, wherein the temperature of the constant temperature leaching is 50-70 ℃.

6. The extraction method of the onion skin dye liquor as claimed in claim 1, wherein the time of the constant temperature leaching is 25-35 min.

7. The onion skin dye liquor extracted by the extraction method of any one of claims 1 to 6.

8. Use of the onion skin dye liquor of claim 7 in protein textiles.

9. Use according to claim 8, characterized by the steps of: at the temperature of 80-100 ℃ and the bath ratio of 1: (40-60) directly dyeing the protein textile by using the onion skin dye liquor.

10. Use according to claim 9, characterized in that the dyeing time is 30 min.

Technical Field

The invention belongs to the technical field of dyes, and particularly relates to an extraction method of an onion skin dye solution, the onion skin dye solution and application of the onion skin dye solution in cotton fabric dyeing.

Background

Along with the concept of green environmental protection, people are gradually getting deeper into the mind, and more people are oriented to natural green life style, so that natural green textiles are gradually valued by people. The textile garment fabric dyed by the natural plant dye gradually gains the recognition of the public due to the characteristics of nature, health, no toxicity and ecology. With the increasing demand of people for natural and healthy products, the vegetable dye dyed fabric has huge potential market and good development space. The clothes dyed by the natural dye have bright and durable colors, are non-toxic and harmless, can play the role of antibiosis and sterilization, and have good health care function.

Natural dyes can be classified into three major classes, plant dyes, animal dyes and mineral dyes, according to their origin. Wherein the plant is the most common and abundant natural dye source, the plant dye is extracted from plant tissues such as roots, stems and leaves, and the most common plant dye is madder, indigo, tea and the like; the animal dye is less in source, and common cochineal and lac are extracted; mineral dyes refer to some inorganic metal salts and oxides, which are generally insoluble in water and are therefore rarely selected for natural dyes. Natural dyes are classified according to the application range, and can also be classified into direct dyes, mordant natural dyes and the like. The direct natural dye mainly comprises safflower and gardenia yellow, has good solubility and high affinity with the fiber, and can be directly adsorbed on the fiber; the mordant natural dye has no affinity to most fibers, but has a group capable of being coordinated and complexed with the dye in the dye structure, so that the dye can dye the fibers through the complexing action of metal ions, and the dyeing fastness of dyed fabrics is improved. Natural dyes can be classified into indoles, anthraquinones, chlorophylls, polyphenols, and the like according to their chemical structures.

The onion is a two-year-old herbaceous plant of the Liliaceae family, and has been cultivated for thousands of years, and the bulb has unique fragrance, and is enlarged into a sphere or oblate sphere. In addition to onion bulbs for vegetables, the outer surface scale of onions must be removed gradually after harvesting, and then some of the skin is removed properly in the process of selling the onion bulbs by a dish dealer or a vegetable dealer, and the removed skin is difficult to treat as garbage.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the extraction method of the onion skin dye solution provided by the invention adopts a three-in-one technology combining constant temperature, vibration and ultrasound, and the extracted onion skin dye solution has the advantages of rich pigment content, low cost, environmental friendliness and green and environmental protection combination.

The invention also provides the onion skin dye solution extracted by the extraction method.

The invention also provides application of the onion skin dye liquor in protein textiles.

According to the method for extracting the onion skin dye liquor, the steps of the method for extracting the onion skin dye liquor comprise:

s1: drying onion skin, adding an extracting agent, and leaching at constant temperature under the conditions of vibration and ultrasound to obtain a crude extract;

s2: and filtering the crude extract to obtain the onion skin dye liquor.

The extraction method provided by the embodiment of the invention at least has the following technical effects:

the onion skin is rich in raw materials, but the onion skin is not fully utilized at present, so that the problem of resource waste exists. According to the extraction method provided by the embodiment of the invention, the onion skin is cleaned and dried, and then the onion skin is subjected to extraction treatment under the combination of constant temperature, vibration and ultrasound by using the extractant, so that the onion skin dye solution can be obtained, the problem that the onion skin is difficult to treat as garbage is solved, the waste utilization is realized, and the effect is better than that of the dye extracted by using ultrasound only. In step S1, the shaking conditions are provided by a water bath shaker. The constant temperature condition is realized by a water bath. The water bath can control the heating rate, the solution can be heated uniformly by shaking, and the dye can be more effectively extracted from the onion skin by ultrasonic. By using the technology of constant temperature, oscillation and ultrasonic combination, the concentration of the dye liquor generated in the extraction process of the onion skin is high, the extraction time is short, and the temperature is low.

According to some embodiments of the invention, in the step S1, the mass ratio of the extracting agent to the onion skin is (20-30): 1.

according to some embodiments of the invention, the power of the ultrasonic conditions is 180 w.

According to some embodiments of the invention, the temperature of the isothermal leaching is 50 to 70 ℃.

According to some embodiments of the invention, the time of the constant temperature leaching is 25 to 35 min.

The onion skin dye solution according to the embodiment of the second aspect of the present invention is extracted by the extraction method according to the embodiment of the first aspect of the present invention.

The onion skin dye liquor provided by the embodiment of the invention at least has the following technical effects:

the onion skin dye solution has the advantages of low cost, easily available raw materials and high tinting strength, and is suitable for dyeing protein textiles. Has good stability under light, heat and acid-base conditions, and is easy to process and store. In addition, the onion skin dye solution has light traditional Chinese medicine aromatic smell, and the onion skin pigment is gradually adsorbed by a human body after the dyed fabric is worn by the human body, so that the onion skin dye solution has a health-care effect on the human body. Onion skin pigment, a natural plant pigment, can be dissolved in water, or can be dissolved in organic solvents such as ethanol and propanol.

The protein textile refers to protein fiber, and refers to fiber made from natural protein, and the source of the fiber comprises wool, silk and the like.

The application of the onion skin dye liquor in the protein textile according to the third aspect of the invention comprises the following steps: at the temperature of 80-100 ℃ and the bath ratio of 1: (40-60) directly dyeing the protein textile by using the onion skin dye liquor.

The application of the onion skin dye liquor in protein textiles according to the embodiment of the third aspect of the invention has at least the following technical effects:

the onion skin dye liquor has strong affinity with protein textiles, the time required for dyeing is short, the dry and wet rubbing fastness can reach 4.5 after 30min of dyeing, and the k/s value of the dyed fabrics reaches 12.6.

According to some embodiments of the invention, the steps are: at a temperature of 90 ℃ and a bath ratio of 1: directly dyeing the protein textile with onion skin dye liquor under the condition of 50min, wherein the dyeing time is 30 min.

Drawings

FIG. 1 is a graph showing the relationship between wavelength and absorbance of onion skin pigment.

FIG. 2 is a graph showing the absorbance standard of onion skin pigment.

Detailed Description

The following are specific examples of the present invention, and the technical solutions of the present invention will be further described with reference to the examples, but the present invention is not limited to the examples.