112 results about "Natural dye" patented technology

The invention relates to an engineering bacterium of high-yield ornamental blue as well as a construction method and application of the engineering bacterium, and belongs to the technical field of natural dye synthesis by a biological method. The engineering bacterium capable of highly producing the ornamental blue, disclosed by the invention, expresses icd, bpsA, glnAY405F and gd hA; acnR, yggB, glsK, aceA and ldh are knocked out from the engineering bacteria. According to the application, yggB and aceA genes are knocked out, site-directed mutagenesis (Y405F) is carried out on a glnA gene, a glsK gene is replaced by a glnAY405F gene, an acnR gene is replaced by an icd gene, an ldh gene is replaced by a gdhA gene, and a bpsA gene is integrated, so that the formation of by-products such as lactate and succinic acid in a blue-viewing synthesis process can be blocked; the flow direction of a passage from citric acid to isocitric acid to alpha-ketoglutaric acid to glutamic acid to glutamine is improved, so that the concentration of glutamine in cells is improved, and the yield of the ornamental blue is improved.

The application relates to an engineering bacterium for high yield of observation blue and a construction method and application thereof, and belongs to the technical field of biological synthesis of natural dyes. The engineering bacterium for high yield of observation blue expresses icd, bpsA, glnA Y405F and gdhA; the engineering bacterium knocks out acnR, yggB, glsK, aceA and ldh. By knocking out the yggB and aceA genes, performing site-directed mutation (Y405F) on the glnA gene, replacing the glsK gene with the glnA Y405F gene, replacing the acnR gene with the icd gene, replacing the ldh gene with the gdhA gene, and integrating the bpsA gene, the application can block the formation of by-products such as lactate and succinic acid in the observation blue synthesis process, improve the flow direction of the citric acid->isocitric acid->alpha-ketoglutaric acid->glutamic acid->glutamine path, and then improve the intracellular glutamine concentration, so that the yield of observation blue is improved.

The invention relates to natural dye and green chemical industry, and particularly discloses water-soluble biological indigo blue and a preparation method thereof. The water-soluble biological indigo comprises the following raw material components in parts by weight: 80-90 parts of a biological-based indigo concentrated solution; 0.5 to 1 part of dimethyl sulfoxide; 10 to 15 parts of a solubilizer A; 5-10 parts of a solubilizer B; and 10 to 15 parts of deionized water. According to the invention, the bio-based indigo concentrated solution synthesized by a biological method is used as a raw material, the water-soluble compound is innovatively formed through beta-cyclodextrin inclusion and povidone compounding, and the water-soluble compound has relatively high water solubility; the water solubility of the product is greater than or equal to 50g / L, the stability is excellent, the obtained indigo dye is natural in source, environment-friendly and high in water solubility, secondary pollution of the traditional dye to the environment is avoided, and the indigo dye is suitable for sustainable chemical industry and green dyeing and finishing industries and can be widely applied to the fields of textile dyeing, water-based ink, cosmetic color developing agents, medicines and the like.

The application discloses a preparation method of active chitosan quaternary ammonium salt modified cellulose fabric based on a dispersion system, and belongs to the field of textile chemistry. The effective grafting of chitosan quaternary ammonium salt and nitrogen-containing heterocyclic monomers is realized by using a dispersion system, the active sites on the chitosan quaternary ammonium salt are increased, the covalent grafting effect of the active chitosan quaternary ammonium salt and the cellulose fabric is improved, the cellulose fabric is endowed with durable antibacterial function, the dyeing performance of the cellulose fabric in natural dyes and active dyes is improved, and when the cellulose fabric prepared by the method is dyed by using active dyes, the amount of neutral salt can be reduced.

The invention provides a natural dye lake pigment and a preparation method thereof, and belongs to the technical field of pigments. Soluble silicon-doped carbon quantum dots are introduced into a natural dye solution to serve as a precipitator, the aggregation state of the natural dye is changed, and the lake pigment is obtained through mixing treatment. The prepared natural dye lake pigment is simple in preparation method and mild in preparation condition, the prepared pigment greatly overcomes the defects that natural dye is prone to discoloration and unstable, the oxygen heat resistance of the pigment is improved, the color stability is good, the lake pigment only comprises five elements of C, H, O, N and Si, the ecological pollution-free characteristic is achieved, and the application prospect is wide.

To provide a natural dye-containing coating that comprises phycocyanin.SOLUTION: A natural dye-containing coating comprises a colorant and a coating vehicle, where the colorant comprises phycocyanin.SELECTED DRAWING: None

The invention relates to the technical field of synthesis of natural dyes by a biological method, in particular to an antibiotic-demand-free ornamental blue high-yield strain as well as construction and application of the antibiotic-demand-free ornamental blue high-yield strain. Corynebacterium glutamicum is used as an initial strain, a tricarboxylic acid circulating gene is regulated and interfered, and the copy number of exogenous blue pigment synthetase BpsA in a genome is adjusted, so that the ornamental blue high-yield strain is obtained. The strain does not need to use antibiotics in the fermentation process, the yield is stable, the product production capacity equivalent to the level when antibiotics are used can still be achieved through fermentation under the antibiotic-free condition, and the growth performance of the strain is kept. The method for producing the ornamental blue by using the strain provided by the invention ensures that the ornamental blue product is natural and green, also improves the efficient production capacity of the strain, solves the contradiction between green environmental protection and stable high yield of the ornamental blue dye, is green and environment-friendly, and has a remarkable industrial application prospect.

The invention belongs to the technical field of natural dyes, and provides a natural coloring agent based on roxburgh rose whole plant components as well as a preparation method and application of the natural coloring agent. The preparation method comprises the following steps: fermenting whole rosa roxburghii plants, residues obtained after juicing or dried fruits used as raw materials for 15-30 days under a pure natural acidic or alkaline condition, and soaking cloth to be dyed into fermentation liquor for 7-30 days, so as to finish dyeing. The acidic condition is provided by malic acid or acetic acid, and the alkaline condition is provided by pure natural salt. The method has the advantages of simple process, mild conditions, no use of any chemical synthesis auxiliary agent, environmental protection and safety. By means of the method, natural cloth such as mulberry silk, cotton and hemp can be dyed, the unprecedented and unique golden yellow color can be dyed, and the method has great market application value.

The invention discloses a preparation method of a high-elasticity comfortable environment-friendly jeans material, and relates to the field of textile and clothing materials. Regenerated cellulose and spandex or high-elastic fibers are introduced into the warp yarns and the weft yarns respectively, and 2 / 1 or 3 / 1 twill weaving is matched; wet enzyme desizing and a cellulase-selenium bridge auxiliary agent are used for synergic softening finishing, and a fluoride-free hydrophilic agent is used for non-ironing shaping; active or natural dye can be selected for neutral dyeing. According to the method, the breathability and the hand feeling are improved while low growth and high recovery rate are achieved, the strength is kept, the shrinkage rate is low, and the fastness is high; and the selenium bridge polymer endows more than or equal to 99% of persistent bacteriostasis to escherichia coli. And the method is green in process, low in energy consumption and chemical dosage and suitable for large-scale production.

The invention discloses an antibacterial and hydrophilic dual-functional ionic liquid double-layer membrane as well as a preparation method and application thereof. According to the double-layer film, corn starch (ST) and polyvinyl alcohol (PVA) serve as substrates, and natural dye alizarin (AL) is mixed to serve as a hydrophilic layer; chitosan (CS), corn protein (Zein) and vanillin (VA) serve as a supporting layer; meanwhile, the ionic liquid is doped, so that the double-layer film is endowed with a fresh-keeping function and sensitive detection capability, the limitation of a single detection function is broken through, and a new thought is provided for food safety.

The purpose of the present invention is to provide: a water-insoluble pigment composition in which a natural pigment and one or more substances selected from pearl pigments or boron nitride are compounded; and a food, a cosmetic, a lipstick cosmetic, an eye cosmetic, a nail cosmetic, a base makeup cosmetic, a hair cosmetic, a pharmaceutical, an agrochemical coating material, a printing marker, stationery, a writing instrument, a printing ink, an inkjet ink, a metal ink, a coating material, a plastic coloring agent, a color toner, a fluorescent labeling agent, a fluorescent probe, or a chemical sensor containing the water-insoluble pigment composition.　The present invention was completed once it was discovered that compounding a natural pigment and one or more substances selected from pearl pigments or boron nitride yields a water-insoluble pigment composition.

The invention relates to a cosmetic agent for the non-oxidative dyeing of keratin fibers, in particular human hair, comprising two separate compositions, wherein the first composition comprises at least one glycosylated dye or dye precursor, in particular a glycosylated natural dye or natural dye precursor, and wherein the second composition comprises at least one β-glucosidase (EC 3.2.1.21). The invention further relates to a method for the non-oxidative dyeing of keratin fibers, in particular human hair, using a cosmetic agent according to the invention.

The invention belongs to the field of preparation of organic and inorganic composite functional nano pigment materials, and particularly relates to a preparation method and application of a multifunctional ZIF-8 / polymer nanosphere pigment, the particle size range of the multifunctional ZIF-8 / polymer nanosphere pigment is 200-500 nm, and the dye loading capacity is 50-500 mg / g. The multifunctional ZIF-8 / polymer nanosphere pigment is prepared by preparing anionic polystyrene nanospheres grafted and embedded with catechol groups, then synthesizing ZIF-8 nanoparticles on the surfaces of the anionic polystyrene nanospheres in situ, and finally adsorbing reactive dyes, acid dyes or natural dyes. Meanwhile, the multifunctional ZIF-8 / polymer nanosphere pigment retains the curing film-forming performance of the polymer nanosphere, and the catechol group in the ZIF-8 / polymer nanosphere can also generate hydrogen-bond interaction with the fiber, so that the multifunctional ZIF-8 / polymer nanosphere pigment is more firmly combined with the fiber.

The invention discloses a folium artemisiae argyi dyed multifunctional cotton fabric and a preparation method thereof, and belongs to the technical field of textile dyeing and finishing. The method comprises the following steps: firstly, carrying out reflux extraction on folium artemisiae argyi by adopting a 95% ethanol solution to efficiently obtain a functional dye with water-soluble and fat-soluble pigments; then, the cotton fabric is pretreated with alum as a mordant, and the pH condition is optimized to enhance binding sites of fibers and dye; and finally, dyeing at specific pH and temperature. The method successfully solves the key technical problem of poor washing fastness in natural dye dyeing, and synergistically endows the cotton fabric with excellent anti-ultraviolet performance (UPF value up to 160.3) and remarkable antibacterial function. The process disclosed by the invention is green and environment-friendly, realizes integration of dyeing and multifunctional finishing of the cotton fabrics, and has a good application prospect.

A method for coloring keratin-containing fibers, in particular such as human hair, using a natural dye based upon anthocyanins and at least one glycosylase is described. The natural dye is also described.

The application belongs to the technical field of bio-based packaging materials, and particularly relates to a novel double-layer composite film and application thereof. The novel double-layer composite film comprises the following steps: reacting palmitic anhydride and carboxymethyl cellulose to obtain carboxymethyl cellulose palmitate; adding a pH-sensitive natural dye indicator to obtain carboxymethyl cellulose palmitate nanoemulsion containing a pH-sensitive substance; then loading a natural polymer material to prepare a film material; finally adding the film material to the carboxymethyl cellulose palmitate to prepare a composite film, thereby obtaining the novel double-layer composite film. The double-layer composite film can be self-emulsified without adding a surfactant, and has the ability to load functional indicator (pH-sensitive color indicator) substances; meanwhile, the barrier performance of the film material, such as a chitosan film, to water vapor and oxygen is improved, and the double-layer composite film has a very promising application in food or fruit preservation. The method provided by the application is not only green in raw materials, but also uses a flow casting method, which can be applied to industrial production and has a good application prospect.

The invention relates to a sun-proof real silk fabric based on modified curcumin and a preparation method of the sun-proof real silk fabric, and belongs to the technical field of dyeing and finishing. The preparation method comprises the following steps: S1, under the action of a catalyst, baicalin and dihydropyran are subjected to an etherification reaction in water, and etherified baicalin is obtained; s2, carrying out an activation reaction on the etherified baicalin and an activating agent in a solvent, and then continuously adding curcumin to carry out an esterification reaction, so as to obtain modified curcumin; s3, dissolving the modified curcumin in water to obtain finishing liquid, and soaking the real silk fabric in the finishing liquid for dyeing to obtain the sun-proof real silk fabric based on the modified curcumin. The baicalin is adopted to modify curcumin molecules, so that the problems that curcumin is weak in ultraviolet protection capability and the light fastness of the dyed real silk fabric is poor are solved, and a safe and environment-friendly solution is provided for improving the light fastness of the natural dye dyed real silk fabric.

The invention relates to a preparation method of high-comfort ecological leather based on all-natural materials. Comprising the following steps of batch grouping, pre-soaking, fleshing and trimming, main soaking, fleshing and trimming, enzyme unhairing, liming, splitting and trimming, deliming, softening, pickling, tanning in a tara tannin extract-tea polyphenol polymer (tea pigment)-zeolite combination, wringing, shaving and buffing, rewetting and filling, fat liquoring and finishing. By adding natural and modified fatliquoring agents such as the sulfated tea oil, the sulfated cattle hoof oil and the lecithin fatliquoring agent, as well as the natural dye and the filler, the leather can obtain good softness, full hand feeling and good comfort.

To provide an artificial leather that is dyed only with naturally derived dye and has washing fastness and light fastness.SOLUTION: An artificial leather consists of a fiber entangled body containing a nonwoven fiber formed of polyester fibers containing dye as a constituent, and elastomer. Ratio of the naturally derived dye in the dye is 98 mass% or more and 100 mass% or less. Washing fastness (discoloration) specified in AATCC-61 1-A method of the artificial leather is rank 3 or higher and light fastness specified in JIS L0842 is rank 3 or higher.SELECTED DRAWING: None

The purpose of the present invention is to provide: a water-insoluble dye composition that is a complex of a natural dye, a dehydration condensation compound of a fatty acid and an amino acid, and an inorganic material; and a food product, cosmetic product, lipstick cosmetic, eye-surrounding cosmetic, nail cosmetic, hair cosmetic, cosmetic for base makeup, medicine, coating material for agrochemicals, printing marker, stationery, writing material, printing ink, inkjet ink, metal ink, coating material, plastic-coloring agent, color toner, fluorescent labeling agent, fluorescent probe, or chemical sensor that contains the water-insoluble dye composition.　The present invention was completed through a finding that a water-insoluble dye composition is obtained by forming a complex of a natural dye, a dehydration condensation compound of a fatty acid and an amino acid, and an inorganic material.

The invention provides a gambiered canton gauze imitation method based on a Maillard reaction, and belongs to the technical field of textile manufacturing. The method comprises the following steps: S1, preparing a binary glycosyl cross-linking agent mother solution; s2, preparing and applying a working solution; and S3, sequentially carrying out calendering, baking and washing post-treatment on the fabric. According to the present invention, the food additive sucralose polyaldehyde derivative reacts with the amino group, the hydroxyl group and other polar groups in the protein fabric molecule to prepare the yellowish-brown-to-black fabric, the color of the fabric is similar to the color of the gambiered canton gauze, the natural dye dioscorea cirrhosa does not need to be used, and the quality of the prepared gambiered canton gauze is stable and controllable. According to the invention, by adding the aromatic amino acid, the aromatic amino acid and the polyaldehyde derivative of the sucralose serving as a food additive are subjected to a Maillard reaction similar to that in food, so that the produced gambiered canton gauze fabric has a food fragrance and is relatively high in color fastness.

The present invention discloses a dye-sensitive solar cell based on a composite structure photoanode and a preparation method and application thereof. The preparation method of the dye-sensitive solar cell comprises the following steps: S1: preparing an Au / SnS / TiO2 composite structure photoanode; S2: preparing an I-rich ‑ and I3 ‑ electrolyte; S3: prepare natural dye blueberry juice; S4: prepare graphite counter electrode; S5: assemble Au / SnS / TiO2 composite structure photoanode, electrolyte, natural dye and counter electrode into dye-sensitive solar cell. The dye-sensitive solar cell prepared by the Au / SnS / TiO2 composite structure photoanode and natural dye by spin coating and high-temperature calcination in the present invention has good photoelectric conversion efficiency and stability. It is applied to the sunroof of electric vehicles, which can not only retain the original function of the sunroof of the car, but also generate electricity to charge the car, greatly saving the original charging time and charging cost of the electric car, and also eliminating the trouble of queuing to use the charging pile.

The invention relates to the technical field of Chinese herbal medicines and dyeing and finishing processes, and discloses a Chinese herbal medicine dyeing formula of fabric and a processing process thereof, the formula comprises the following components: 1-8% of natural dye, 10-14% of Chinese herbal medicine dyeing agent, 1-3% of vegetable gum, 1-2% of chitosan, 5-10% of sodium chloride, 4-10% of fatty acid, and 3-6% of ethanol. According to the invention, the Chinese herbal medicine powder, the natural dye and the natural auxiliary agent are adopted to form a dyeing agent formula, so that the final product is bright in color, safe and healthy, and the textile produced according to the formula is bright in color, excellent in color fastness, healthy and environment-friendly, and has multiple health care effects.

The invention relates to a cosmetic agent for the non-oxidative dyeing of keratin fibers, in particular human hair, comprising two separate compositions, wherein the first composition comprises at least one glycosylated dye or dye precursor, in particular a glycosylated natural dye or natural dye precursor, and wherein the second composition comprises at least one β-glucosidase (EC 3.2.1.21). The invention further relates to a method for the non-oxidative dyeing of keratin fibers, in particular human hair, using a cosmetic agent according to the invention.

The invention discloses a high-color-depth wool fabric natural dye synergistic mordanting method which comprises the following steps: cleaning a wool fabric, removing surface impurities, and draining for later use; adding the sour papaya slices into water, heating until the sour papaya slices are boiled and then are slightly boiled, keeping the slightly boiling state, carrying out heat-preservation extraction, and filtering to obtain a sour papaya extracting solution; adding deionized water into a dyeing container according to a bath ratio, sequentially adding madder dye, a chaenomeles speciosa extracting solution and rare earth salt, and adjusting the pH value of a dye bath to 3-4; immersing the wool fabric into the dye liquor, raising the temperature to 95 DEG C, and keeping the temperature for dyeing; after the dyeing is finished, carrying out post-treatment to obtain the high-color-depth wool fabric. Through the synergistic complexing effect of the rare earth ions, polyphenol substances in the chaenomeles speciosa extracting solution and the rubia cordifolia dye, the dyeing depth and color fastness of the wool fabric are remarkably improved, and the problem that the direct dyeing depth of natural dye is insufficient is solved; the one-bath one-step method is simple in process, efficient and environment-friendly, and damage to the fibers is reduced.

A method for microwave-assisted extraction of blue indigo mud from Strobilanthes cusia belongs to the field of natural dye preparation. The method comprises the following steps: 1) mixing fresh Strobilanthes cusia leaves with water according to a specific solid-liquid ratio, and performing microwave-assisted treatment to make the indigo precursor quickly dissolve out; 2) after the extraction liquid is cooled by standing, an alkali agent is added for oxidation precipitation, and after solid-liquid separation and drying, the blue indigo mud with high indigo content is obtained. The indigo yield of the present application can reach 0.32%~0.42%, and the purity of indigo in the product is stable at more than 80%, and the highest can reach 87.49%. The method realizes efficient and rapid extraction of indigo from Strobilanthes cusia, significantly shortens the time of traditional indigo preparation process, and is simple, environment-friendly, stable in product quality, and suitable for industrial production.

The invention relates to a cosmetic product for non-oxidative dyeing of keratin fibers, in particular human hair, comprising two compositions that are separate from each other, wherein the first composition comprises at least one glycosylated dye or dye precursor, in particular glycosylated natural dye or natural dye precursor, and wherein the second composition comprises at least one β-glucosidase (EC 3.2.1.21). The invention also relates to a method for non-oxidative dyeing of keratin fibers, in particular human hair, using a cosmetic product according to the invention.

The application discloses a tie-dyeing Tibetan paper production process and relates to the papermaking technical field; in order to improve the solidification effect of dyes after tie-dyeing; including the following steps: preparing Tibetan paper for tie-dyeing, ensuring that the Tibetan paper surface is clean and wrinkle-free, and the Tibetan paper has certain toughness; folding the Tibetan paper according to the required shape, laying the Tibetan paper on the workbench surface during folding, and wearing gloves throughout the process; using a thin rope or a thread to bundle the folded Tibetan paper, adjusting the tightness of the bundling in the process, so that there are no marks on the Tibetan paper surface; putting the bundled Tibetan paper into a dye pool for dyeing, repeatedly immersing the bundled Tibetan paper into the dye pool for 2 times during the dyeing process, and the immersion time is 8-10 min each time. The Tibetan paper is tie-dyed by adopting the natural dye and the manual knotting mode, so that each tie-dyed Tibetan paper has unique characteristics.

The present application belongs to the field of textile printing and dyeing technology, and particularly relates to a method for dyeing silk fabrics with loquat leaf extract as a natural dye and using a compound fixing system to improve the dyeing fastness.

The invention discloses an environment-friendly process method for dyeing a wool fabric by adopting ginseng pulp, and relates to a textile material technology. The preparation method comprises the following steps: cutting a textile into a fabric sample, weighing, recording, taking a proper amount of ginseng fruit, peeling, mashing, filtering for multiple times to obtain a ginseng fruit pulp solution, pouring the solution into a beaker, heating the beaker in a water bath for 0.5-1 hour, and filtering to obtain the ginseng fruit dye, putting the fabric sample into the ginseng fruit dye with the bath ratio of 1: 60, soaking and continuously stirring for 0.5-1 hour, then adding 5-10g / L NaOH and 5-10g / L NaCl, continuously stirring for 0.5-1 hour, taking out the fabric sample, and naturally airing. According to the method, the natural dye prepared from the ginseng fruit pulp is used for dyeing the wool fabric and the cotton velvet fabric, the fabric can be dyed to be yellow, the process reduces environmental pollution, the resource utilization rate and economic benefits are improved, and the dyed fabric has the advantages of being environmentally friendly, non-toxic, biodegradable and the like.