Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In the description of the present invention, it should be noted that the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention is described in detail below.
The inventor researches and discovers that the walnut green husk contains natural dyeing components and can be used for preparing the hair dye, so that chemical substances harmful or sensitizing to human bodies are avoided. However, since keratin is a majority of hair components, it is difficult for the dyeing components to adhere for a long time; furthermore, as consumers pay attention to hair quality, the hair quality of dyed hair is also becoming more important.
Based on the above, the invention provides a walnut green husk black hair dye, which is prepared from the following components in parts by weight:
40-70 parts of a hair dyeing agent I;
40-70 parts of hair dyeing II agent.
Preferably, the hair dye is prepared from the following components in parts by weight:
50-60 parts of a hair dyeing agent I;
40-70 parts of hair dyeing II agent.
The hair dyeing agent I comprises the following components in parts by weight:
the walnut green husk extract is a multi-component mixture containing natural dyeing components and extracted from walnut green husks, contains a plurality of phenolic hydroxyl groups, and is easy to complex with metal ions to change color.
Preferably, the walnut green husk extract is an aqueous extract, and more preferably, the extraction solvent is an alkaline solution during extraction, because phenolic hydroxyl has weak acidity, the solubility of polyphenol in the walnut green husk can be increased under alkaline conditions, and the extraction rate and the extraction efficiency are improved.
Preferably, the alkaline solution can be prepared from one or more of sodium hydroxide, potassium hydroxide, ammonia water, sodium carbonate, sodium bicarbonate, sodium oxide, calcium hydroxide, potassium carbonate and triethylamine; preferably, a non-volatile inorganic base is used, and more preferably, a more basic sodium hydroxide or potassium hydroxide is used. In view of the cost of industrial development, it is better to extract the walnut green husk by using sodium hydroxide with lower cost.
Further, the mass concentration of the alkaline component in the alkaline solution is 1 to 5% (or 1 to 5g/100ml), preferably 1 to 4%, more preferably 1.5 to 3%, for example 2%. At the moment, the alkaline solution can well dissolve and extract polyphenol components in the walnut green husks, and the dyeing capability is improved. When the alkaline component in the alkaline solution is excessive, the structure of some components in the walnut green husk can be damaged during extraction, especially under the heating condition, and the dyeing ability is reduced.
In the invention, the walnut green peel refers to a green peel wrapping the woody hard skin of the walnut before the walnut is ripe, in particular to a fresh walnut green peel which is not dried. The cells of the walnut green husk contain more water, so that the effective components can be extracted more easily, and the processing treatment of the walnut green husk is not needed, so that the extraction steps are less, and the process flow is short.
In order to improve the extraction efficiency and the extraction rate, the walnut green husk is preferably subjected to crushing treatment before extraction so as to increase the specific surface area. The walnut green husk can be subjected to one or more of shearing crushing, grinding crushing and collision crushing, and the crushed particle size is not higher than 2 cm.
In a preferred embodiment, the particle size of the crushed walnut green husk is 1.5-2 cm.
Extracting with pulverized exocarpium Juglandis Immaturus. When the walnut green husk is extracted by using an alkaline solution, the material-liquid ratio of the walnut green husk to the alkaline solution is 1: 1-5, preferably 1: 1-4, more preferably 1: 2-3. The feed-liquid ratio can fully extract polyphenol substances in the polyphenol substances, reduces the extraction volume, reduces the workload of concentration after extraction, reduces the concentration time and energy consumption waste, and provides feasible parameters and references for industrialization.
The extraction method of the walnut green husk can be a decoction method or an ultrasonic method.
In the decocting method, boiling and extracting for 2-4 hr to dissolve out effective components; in a preferred embodiment, the filtrates are combined by further extraction.
In the ultrasonic extraction method, when the ultrasonic frequency is 40-80KHz and the power is 500-1000W, the wall breaking rate of the walnut green seedcase can be improved, and the extraction efficiency is improved.
Preferably, the frequency of the ultrasonic wave is 60-80KHz, and the power is 500-800W.
Preferably, the ultrasonic extraction is performed for 0.5-2h, more preferably 0.5-1h, and the extraction time is short and the extraction efficiency is high.
More preferably, the extract is concentrated after the extraction is completed, so as to increase the concentration of the effective components, and facilitate the subsequent preparation of the hair dye.
Preferably, the extract is concentrated to 1/10-3/10 of the original volume, more preferably to 1/10-1/5 of the original volume, so that the preparation requirement of the hair dye can be met. The concentrated solution is the walnut green husk extract.
In the present invention, the penetrant is selected from one or more of L-cysteine, sodium thiosulfate and cysteine hydrochloride, preferably L-cysteine and sodium thiosulfate, because L-cysteine and sodium thiosulfate can destroy disulfide bonds in hair keratin, promote the combination and/or complexation of keratin and coloring agent, make coloring agent enter hair pores, and enhance hair dyeing effect and duration.
In a preferred embodiment, the mass ratio of L-cysteine to sodium thiosulfate is 4-8:1, preferably 4-7:1, e.g. 6: 1. On the premise of meeting hair permeability, the usage amount of sodium thiosulfate can be reduced, and the sulfur content of the hair dye can be reduced.
The synergist is selected from one or more of tea polyphenol, kaempferol, grape polyphenol and apple polyphenol, preferably tea polyphenol, and has structure containing more phenolic hydroxyl groups, and can be complexed with metal coloring agent to change color. Particularly, the color converted after the tea polyphenol is complexed with the metal coloring agent is the same as the color converted after the walnut green husk extract is complexed with the metal coloring agent, so that the dyeing effect of the walnut green husk extract can be enhanced.
The color developing agent is selected from one or more of ascorbic acid, 2-mercaptoethanol, urea and thioglycolic acid, preferably ascorbic acid is used, the ascorbic acid can decompose disulfide bonds of hair keratin and form sulfydryl, and in the hair dye, hydrogen bonds, ionic bonds and covalent bonds can be formed among active methyl, carboxyl and hydroxyl functional groups in various components, so that the dyeing effect of the hair dye is enhanced, and therefore, the ascorbic acid is a good color developing agent and can improve the blackness of hair dyed; meanwhile, the ascorbic acid is safe to use and has small harm to human bodies.
The thickening agent is selected from one or more of sodium carboxymethylcellulose, hydroxyethyl cellulose, xanthan gum, guar gum, carrageenan, Arabic gum, sodium alginate and gelatin, and the sodium carboxymethylcellulose and the hydroxyethyl cellulose are preferably used as the thickening agent.
In a preferred embodiment, the mass ratio of the sodium carboxymethyl cellulose to the hydroxyethyl cellulose is 1:0.5-4, preferably 1: 1-3. The hair dye prepared by the combination has good consistency, and meanwhile, the hair dye has good dispersion and film-forming properties and is not easy to lose moisture.
The complexing agent is EDTA-2Na (disodium ethylene diamine tetraacetate). EDTA-2Na has strong complexing ability, and when the hair dyeing agent I containing EDTA-2Na is used, the penetrant further opens the pores (or scales) of the hair, so that the components in the hair dyeing agent I enter the hair cortex. EDTA-2Na can capture metal ions in the hair dyeing agent II when the hair dyeing agent II is used to form a metal ion-EDTA complex; meanwhile, the metal ions can be complexed with the tea polyphenol/walnut green husk extract to form a metal ion-EDTA-tea polyphenol/walnut green husk extract complex, the molecular structure of the substance is large, the substance is difficult to flow out through pores of hair, the blackness of dyed hair is provided, and the hair washing and fading after hair dyeing are reduced.
The deionized water is water containing no ions, and optionally, may be subjected to distillation, osmosis or ion adsorption treatment, without limitation.
In a preferred embodiment, the hair dyeing agent I comprises the following components in parts by weight:
more preferably, the hair dyeing agent I comprises the following components in parts by weight:
the hair dyeing agent II comprises the following components in parts by weight:
wherein the metal coloring agent contains Fe2+Or Cu2+Preferably, the use is harmless or dangerous to human healthFe with minimal harm2+. Preferably, the metal coloring agent is FeSO4、FeCl2Or Fe (NO3)2The metal coloring agent is safe and easy to obtain and convenient to use.
In the hair dyeing agent II, the thickening agent plays a role of dispersing the metal coloring agent, so that the metal coloring agent is prevented from being polymerized into large particles, and the dyeing effect is reduced. The thickening agent is selected from one or more of hydroxyethyl cellulose, xanthan gum, polyethylene oxide, polyvinylpyrrolidone, carbomer resin and Arabic gum, preferably hydroxyethyl cellulose or xanthan gum with proper viscosity is used, the water solubility of the hydroxyethyl cellulose or the xanthan gum is good, a film can be well formed, water is prevented from being lost, and the use and long-term storage are facilitated.
In addition, the hydroxyethyl cellulose has better stability, and even if the hydroxyethyl cellulose does not generate precipitation in a saturated salt solution, the thickening effect is not influenced. The hair dyeing II agent containing metal ion components prepared from hydroxyethyl cellulose also does not generate precipitation and influence the emulsion form.
And the sodium carboxymethyl cellulose can not be used as a hair dyeing agent II, and the sodium carboxymethyl cellulose can form precipitates with metal ions to influence the thickening effect.
The emulsifier is one or more selected from tween-80, sodium dodecyl sulfate, lauric acid monoglyceride, fatty acid monoglyceride and lanolin, and tween-80 is preferably used as the emulsifier. Tween-80 has wetting and penetrating capability, can reduce friction on hair surface, and can penetrate components in hair dyeing agent II, especially metal ion components into hair cortex layer through hair scales, increase complexing probability of metal coloring agent and EDTA, tea polyphenols, and Juglandis pericarpium Citri Reticulatae viride extract, thereby enhancing dyeing effect and prolonging dyeing time.
The Tween-80 has emulsifying capacity, and the components in the hair dyeing agent II can be uniform and not separated by using the Tween-80 as an emulsifier, so that the hair dyeing agent II is beneficial to long-term storage and use and improves the sensory experience of users.
In a preferred embodiment, the hair dyeing II agent comprises the following components in parts by weight:
in another preferred embodiment, the hair dyeing agent II comprises the following components in parts by weight:
more preferably, the hair dyeing agent II comprises the following components in parts by weight:
in the walnut green seedcase black hair dye, the hair dye I is uniformly coated on hair during hair dyeing, the hair dye I is washed off by clear water after 15-30min, the hair dye II is uniformly coated on the hair, and the hair dye II is washed off after 3-5min, so that the black hair can be dyed, and the dyeing time is very short.
In the walnut green husk black hair dye provided by the invention, the metal dye and the walnut green husk extract have good permeation efficiency, and the hair dyeing time is shortened under the condition of no need of heating, so that the hair dye is more convenient and quicker to use.
The hair dye provided by the invention does not contain carcinogenic substances such as phenylenediamine, nitryl p-phenylenediamine and the like, does not contain an oxidant, has high use safety performance, and can reduce the harm of the hair dye to human bodies.
Meanwhile, the hair dye provided by the invention contains the walnut green husk extract, so that the waste is recycled, the resource is saved, the added value of agricultural products is improved, the deep development is carried out, and the economic benefit is improved.
The invention also provides a preparation method of the walnut green husk black hair dye, which comprises the following steps:
(1) preparing a hair dyeing agent I;
(2) preparing a hair dyeing agent II.
Wherein, in the step (1), the penetrating agent, the complexing agent and part of the thickening agent are dissolved in deionized water; dissolving the walnut green husk extract, the synergist, the color developing agent and the rest of the thickener in the deionized water, and uniformly stirring to obtain the hair dyeing agent I.
Preferably, when a plurality of thickeners are used, the thickener having a slow dissolution rate is dissolved preferentially, and the thickener having a fast dissolution rate is dissolved again. For example, when sodium carboxymethylcellulose and hydroxyethylcellulose are used as thickeners, the sodium carboxymethylcellulose can be dissolved first and the hydroxyethylcellulose can be dissolved.
More preferably, when the penetrant, the complexing agent and the thickener having a slow dissolution rate are dissolved in deionized water, the solution is heated with stirring to accelerate the dissolution of the solute. Preferably, the heating temperature is not more than 90 deg.C, so as to avoid the oxidative degradation of some components.
After heating, the solution is preferably cooled to room temperature, and then walnut green husk extract, synergist, developer and thickener with high dissolution rate are added to prevent the reductive substance from degrading or oxidizing under heating.
In step (2), the metal stain is dissolved in 1/5-1/3 deionized water. The remaining deionized water is dissolved with the thickener and emulsifier, preferably by heating, to increase the rate of dissolution.
Because the metal coloring agent, especially the ferrous coloring agent, is easily oxidized and converted into the trivalent under the heating condition, the color of the complex of the trivalent iron and the coloring agent in the coloring agent I is not black. Therefore, the hair dyeing agent II is preferably prepared by adding the solution dissolved with the metal coloring agent after the solution dissolved with the thickening agent and the emulsifying agent is cooled to room temperature so as to avoid the oxidation of the metal coloring agent and stirring the solution uniformly.
The room temperature in the invention means that the indoor temperature is 20-35 ℃.
In the step (2), the metal coloring agent is separately dissolved and then added into the solution in which the thickening agent and the emulsifying agent are dissolved, so that the metal coloring agent can be fully dispersed without aggregation.
The preparation method of the walnut green husk black hair dye provided by the invention has the advantages of few steps, simple preparation, high reproducibility and small difficulty in industrial quantitative production.
Examples
Example 1
Walnut green husk black hair dye formula 1
A hair dyeing agent I:
hair dyeing agent II:
the preparation method of the walnut green husk extracting solution comprises the following steps:
cutting fresh walnut green peel into small pieces with the particle size of about 2cm, and ultrasonically extracting for 0.5h in 2% sodium hydroxide solution according to the feed liquid mass ratio of 1:2.5, wherein the ultrasonic frequency is 80KHz, and the power is 600W.
The preparation method comprises the following steps:
adding L-cysteine, EDTA-2Na, sodium thiosulfate and sodium carboxymethylcellulose into 50mL of deionized water, heating at 85 deg.C for 5min, and stirring to dissolve. And (3) cooling the solution to room temperature, adding the walnut green husk extracting solution, tea polyphenol, ascorbic acid and hydroxyethyl cellulose into the solution, stirring to dissolve, and uniformly mixing to obtain the hair dyeing agent I.
Ferrous sulfate heptahydrate was added to 10mL of deionized water and stirred to dissolve it. And adding hydroxyethyl cellulose and tween-80 into the rest 40mL of deionized water, heating at 85 ℃ to completely dissolve the hydroxyethyl cellulose and tween-80, cooling to room temperature, adding a ferrous sulfate solution, and mixing the two agents uniformly to obtain the agent II.
Example 2
Walnut green husk black hair dye formula 2
A hair dyeing agent I:
hair dyeing agent II:
the preparation method of the walnut green husk extracting solution comprises the following steps:
cutting fresh walnut green peel into small blocks with the particle size of about 1.5cm, and ultrasonically extracting for 0.5h in 4% sodium hydroxide solution according to the feed liquid mass ratio of 1:1.5, wherein the ultrasonic frequency is 80KHz, and the power is 800W.
The preparation method comprises the following steps:
adding L-cysteine, EDTA-2Na, sodium thiosulfate and sodium carboxymethylcellulose into deionized water, heating at 60 deg.C for 8min, and stirring to dissolve. And (3) cooling the solution to room temperature, adding the walnut green husk extracting solution, tea polyphenol, ascorbic acid and hydroxyethyl cellulose into the solution, stirring to dissolve, and uniformly mixing to obtain the hair dyeing agent I.
Ferrous sulfate heptahydrate was added to 15mL of deionized water and stirred to dissolve it. And adding hydroxyethyl cellulose and tween-80 into the residual 45mL of deionized water, heating at 90 ℃ to completely dissolve the hydroxyethyl cellulose and tween-80, cooling to room temperature, adding a ferrous sulfate solution, and uniformly mixing the two to obtain the preparation II.
Example 3
Walnut green husk black hair dye formula 3
A hair dyeing agent I:
hair dyeing agent II:
the preparation method of the walnut green husk extracting solution comprises the following steps:
cutting fresh walnut green peel into small pieces with the particle size of about 2cm, and ultrasonically extracting for 1h in 1% sodium hydroxide solution according to the feed liquid mass ratio of 1:4, wherein the ultrasonic frequency is 80KHz, and the power is 600W.
The preparation method comprises the following steps:
adding L-cysteine, EDTA-2Na, sodium thiosulfate and sodium carboxymethylcellulose into deionized water, heating at 70 deg.C for 6min, and stirring to dissolve. And (3) cooling the solution to room temperature, adding the walnut green husk extracting solution, tea polyphenol, ascorbic acid and hydroxyethyl cellulose into the solution, stirring to dissolve, and uniformly mixing to obtain the hair dyeing agent I.
Ferrous sulfate heptahydrate was added to 10mL of deionized water and stirred to dissolve it. And adding hydroxyethyl cellulose and tween-80 into the rest 30mL of deionized water, heating at 60 ℃ to completely dissolve the hydroxyethyl cellulose and tween-80, cooling to room temperature, adding a ferrous sulfate solution, and mixing the two agents uniformly to obtain the agent II.
Comparative example
Comparative example 1
Comparative prescription 1
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
Comparative example 2
Comparative prescription 2
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
Comparative example 3
Comparative prescription 3
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
Comparative example 4
Comparative prescription 4
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
Comparative example 5
Comparative prescription 5
Hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
Comparative example 6
Comparative prescription 6
Hair dyeing agent I was the same as in example 1.
Hair dyeing agent II:
hydroxyethyl cellulose 1.5g
Tween-801 ml
50ml of deionized water
The preparation method is the same as example 1.
Comparative example 7
Comparative prescription 7
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
The obtained hair dye I has low thickness and high fluidity, and is not easy to stay on hair.
Comparative example 8
Comparative prescription 8
A hair dyeing agent I:
hair dyeing II agent the same as example 1.
The preparation method is the same as example 1.
The obtained hair dye I has low thickness and high fluidity, and is not easy to stay on hair.
Comparative example 9
Comparative prescription 9
Hair dyeing agent I was the same as in example 1.
Hair dyeing agent II:
ferrous sulfate heptahydrate 1.5g
Tween-801 ml
50ml of deionized water
The preparation method is the same as example 1.
The obtained hair dyeing agent II has low thickness and high fluidity, and is not easy to stay on hair.
Comparative example 10
Comparison prescription 10
Hair dyeing agent I was the same as in example 1.
Hair dyeing agent II:
the preparation method is the same as example 1.
The obtained hair dyeing agent II has precipitation, and has low viscosity, and is not suitable for hair retention and development.
Examples of the experiments
Experimental example 1
Skin irritation test
1 laboratory animal
Four healthy primary adult rabbits (two in each of male and female) with the body weight of not less than 2kg are selected.
One day before experiment 2, the experimental rabbits were fixed manually, and the hairs (about 10 × 15cm) on both sides of the spine were cut off as the experimental and observation sites (one side of the observation site was kept healthy and undamaged, and one side of the experimental site was cut with a small knife with a # shape).
3 on the day of experiment, the hair dye I and the hair dye II are uniformly mixed according to the ratio of 1:1, 0.5g of the uniformly mixed hair dye is taken and directly smeared on the shaved part. The part for smearing the hair dye is applied with a dressing with good air permeability of 25 multiplied by 25mm, the outer layer of the dressing is wrapped with gauze, and the dressing and the gauze are fixed by a bandage for 4 hours. And (4) after the contact period is finished, sequentially taking down the bandage, the gauze and the dressing, marking the contact position, cleaning with warm water and wiping to dry.
A gauze piece dropping 0.5g of 0.9% sodium chloride injection is applied to the control part by taking the 0.9% sodium chloride injection as a control sample, and the application time and the observation time are the same as those of the experimental group.
4 Observation of results
The contact site condition was recorded at 1h, 24h, 48h and 72h after removal of the application.
Scoring according to the GB7919 scoring standard, the results are given in the table below
Experimental example 2
Dyeing test
Uniformly applying the hair dyeing agent I on white hair, and washing with clear water after 25 min; and then uniformly applying the hair dyeing agent II on the hair, and washing after 3 min. The amount of the hair dye is based on the amount of the hair dye which can be uniformly coated on the hair.
If the hair is not dyed successfully, taking untreated white hair, repeating the steps, prolonging the retention time of the hair dyeing agent I to 50min, and prolonging the retention time of the hair dyeing agent II in the hair to 10 min.
The test samples were the hair dyes prepared in examples 1 to 3 and comparative examples 1 to 10.
After the dyeing treatment, the following results were found:
example 1: after dyeing the hair for 28min, the hair is black;
example 2: after dyeing the hair for 28min, the hair is black;
example 3: after dyeing the hair for 28min, the hair is black;
comparative example 1: after 1 hour of dyeing, the hair was brown;
comparative example 2: after 1 hour of dyeing, the hair was dark brown;
comparative example 3: after 1 hour of dyeing, the hair was light brown;
comparative example 4: after dyeing for 1 hour, the hair is dark brown and is easy to break;
comparative example 5: after dyeing for 1 hour, the hair is dark brown and has little odor;
comparative example 6: after 1 hour of dyeing, the hair was dark brown;
comparative example 7: after dyeing the hair for 28min, the hair is black, but the prepared hair dyeing agent I has small consistency and high fluidity, and is not beneficial to staying on the hair;
comparative example 8: after dyeing the hair for 28min, the hair is black, but the prepared hair dyeing agent I has small consistency and high fluidity, and is not beneficial to staying on the hair;
comparative example 9: after dyeing for 28min, the hair is black, but the prepared hair dyeing agent II has small consistency and high fluidity and is not beneficial to staying on the hair;
comparative example 10: after 1 hour of dyeing, the hair is dark brown, but the prepared hair dyeing agent II has precipitation, so that the thickness of the agent II is small, the agent II is not easy to stay on the hair, and the color development is not easy.
The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.