235results about "Natural dyes" patented technology

The utility model belongs to the technical field of sugar alcohol preparation, and relates to a system for co-producing L-arabinose and caramel pigment by using xylose chromatography raffinate, which comprises a raw material tank, a nanofiltration membrane separator, a chromatography separation device, an evaporation concentration tank, a crystallization tank, a centrifugal separator and a dryer which are sequentially communicated by pipelines, and the browning reaction assembly is used for mixing the raffinate and the centrifugal mother liquor and then carrying out browning reaction treatment to prepare caramel pigment. The chromatographic separation device is used for separating an extracting solution and raffinate from the flowing nanofiltration permeate, the evaporation concentration tank and the crystallizing tank are used for concentrating and crystallizing the flowing extracting solution into massecuite, the centrifugal separator is used for separating the flowing massecuite into moist sugar and centrifugal mother liquor, and the dryer is used for drying the flowing moist sugar into L-arabinose crystals. According to the utility model, raffinate and centrifugal mother liquor are mixed to prepare a caramel pigment liquid product, so that a caramel pigment additional product is obtained while the utilization rate of saccharide resources is improved.

The invention relates to microbial colorant compositions and associated processes to produce the same. Microbial colorant compositions are produced by combining microbially derived pigment molecules and microbial biosurfactants. The pigment molecules are obtained either directly from a fermentation broth or by extracting a precursor and transforming it into a pigment using chemical or enzymatic processes. A separately produced biosurfactant, such as a rhamnolipid or surfactin, is added to the obtained pigment molecule to create a pre-dispersed formulation. The biosurfactant may be added at various steps of This approach improves pigment dispersion, solubility, and substrate compatibility, enabling stable aqueous formulations without synthetic additives. The resulting compositions are suitable for wide range of applications including in textiles, food, cosmetics, and polymer materials. Processes for producing and combining the pigment and biosurfactant are also disclosed, including variations in fermentation, extraction, and formulation stages.

The invention belongs to the technical field of extraction and purification of plant components, and relates to a low-temperature freezing vacuum drying nano processing method for extracting anthocyanin from purple corn, in particular to a method for extracting anthocyanin from corn kernels, cores, straws, roots and stigmas of purple corn. The processing method comprises the steps of pretreatment, concentration, hydroxyl radical treatment, quick freezing, nano crushing and the like. A hydroxyl radical treatment method is adopted, so that harmful substances such as pesticide residues can be efficiently, quickly and thoroughly removed; the effect of extracting the anthocyanin from corn kernels, roots, cores, stems and stigma of purple corn by adopting a low-temperature freezing vacuum drying technology is remarkable, the purification rate is high, and the anthocyanin containing 99% of biological activity is achieved. The nanoscale anthocyanin is processed by adopting jet mill equipment and can be conveniently absorbed by a human body and widely applied to various fields.

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 invention provides a safflower pigment extraction method. The safflower pigment extraction method comprises the following steps: preparing a safflower decoction; adding whey protein into the safflower boiling liquid, and uniformly stirring; standing for layering, removing supernatant liquid, and then regulating and controlling the pH value of the mixed liquid; selective separation of carthamin yellow and haematochrome is realized through pH control; wherein yellow pigment mud is obtained under the alkaline condition, and red pigment mud is obtained under the acidic condition; the obtained yellow pigment mud and the obtained red pigment mud are subjected to vacuum drying and then ground, and the drying temperature is 30-40 DEG C. According to the safflower pigment extraction method provided by the invention, the selective separation of safflower yellow / red pigment is realized by regulating the pH value, and the limitation of single pigment extraction is broken through; and the weather resistance of the product is effectively improved through low-temperature grinding and a color fixing agent compounding and coating process. The invention further provides application of the safflower pigment.

The invention relates to the technical field of dyeing and finishing, and particularly discloses a biological blue dye, a dyeing solution as well as a preparation method and application thereof. The pyridone dye is mixed into the ornamental blue dye, the ornamental blue light is adjusted, the ornamental blue light shifts to the cyan light, and the red light effect is weakened, so that the problems of reddish color and insufficient dyeing depth after ornamental blue dyeing can be effectively solved, and along with the increase of the mixing proportion of the pyridone dye, higher color depth can be obtained under the same dyeing concentration and number of times, and the dyeing effect is improved. The dry and wet rubbing fastness of the dyed cloth is improved by 0.5 level.

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.

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 present invention relates to a colourant composition based on anthocyanins, comprising an extract of seedless Berberis vulgaris L. fruit and an extract of the skin of Myrtus communis L. fruit; to a method for preparing anthocyanin-based colourant compositions; and to the colourant composition obtained using the method. The present invention also relates to the uses of the colourant composition as a food colourant and, optionally, as a preservative and an antioxidant, and to food products comprising the colourant composition.

This invention relates to the field of edible fungi technology, and discloses a new strain of Auricularia heimuer and its applications. The Auricularia heimuer strain JH-Y6 of this invention was deposited at the China Center for Type Culture Collection (CCTCC) on November 20, 2023, with accession number CCTCC No: M 20232280. Auricularia heimuer JH-Y6 possesses high tyrosinase activity, high melanin production, and excellent agronomic traits, and can be used in the screening and breeding of Auricularia heimu, the extraction process of melanin from Auricularia heimu, and its cultivation. It can also be used in the deep processing of food or health products.

Use of an encapsulated natural color for coloring a household, industrial or institutional (HI&I) product wherein the encapsulated natural color is stable in water to simulated solar irradiation at 765 Watt in accordance with International Commission on Illumination 85 (1989, Table 4, 3 mm window glass) reference sun for a period of between 8 hours and 16 hours.

A comprehensive utilization system for extracting black rice anthocyanin and separating starch is provided with a screw conveyor, an extraction tank is arranged at an outlet of the screw conveyor, stirring blades are arranged in the extraction tank, a liquid outlet pipe is arranged on one side of the extraction tank and connected with a liquid outlet pump through a valve, and the liquid outlet pump is connected with the extraction tank and a liquid storage tank through pipelines. A slag outlet in the bottom of the extraction tank is connected with a screw pump through a pipeline and a valve, an outlet of the screw pump is provided with a pulping machine, an outlet of the pulping machine is provided with a vibrating screen, a filtrate outlet of the vibrating screen is provided with a filtrate collecting tank, the filtrate collecting tank is connected with a horizontal screw centrifuge through a horizontal screw feeding pump, and a slag outlet of the horizontal screw centrifuge is provided with a horizontal screw slag collecting tank; according to the utility model, the extraction of black rice anthocyanin is realized through the extraction tank, starch in black rice is separated and collected by the horizontal screw centrifuge, compared with natural sedimentation, the occupied area is small, the treatment capacity is large, the efficiency is high, the obtained starch has low water content and high quality, and the extraction of black rice anthocyanin and the recycling of starch are realized.

The invention relates to the field of fermentation product extraction methods, in particular to a method for efficiently extracting intracellular products. According to the method, staged extraction and ultrasound are combined to be applied to intracellular product extraction, and the extraction rate can be obviously increased. After thalli in fermentation liquor are crushed, a non-polar solvent is adopted for first extraction, and ultrasonic short-time low-temperature treatment is adopted in the extraction process, so that the extraction efficiency of a target product can be obviously improved, a polar solvent is added into an extraction phase of the first extraction in second extraction, and ultrasonic short-time low-temperature treatment is performed again, so that the extraction amount of intracellular products is increased; the process does not need complex equipment, is short in operation time consumption and high in extraction efficiency, and is suitable for large-scale industrial production.

COMPOSITION TO DEHYDRATE Tillandsia sp, characterized in that it comprises, in an aqueous solution, a main component selected at least from Na bicarbonate (NaHCO3), ammonium bicarbonate (NH4)HCO3 and calcium hydroxide, for a total, alone or combined with sodium bicarbonate, of from 0.045 g / cm3 of aqueous solution up to 0.10 g / cm3 of an aqueous solution and 0.30 cm3 of a hydroalcoholic solution of carminic acid up to a maximum of 0.80 cm3 / cm3 of an aqueous solution.

The application belongs to the technical field of natural substance separation and extraction, and particularly relates to a kind of Haematococcus pluvialis multi-product cascade separation method based on eutectic solvent sequential extraction and enzyme membrane reactor coupling, comprising the following steps: (1) cell wall weakening pretreatment step; (2) water-soluble component extraction step; (3) pigment component extraction step; (4) astaxanthin extraction step; (5) enzyme conversion step. Through the synergistic effect of eutectic solvent sequential extraction and enzyme membrane reactor, efficient, green and continuous cascade separation of water-soluble components, pigments, astaxanthin and xylo-oligosaccharides in Haematococcus pluvialis is realized, and product purity and resource utilization are improved.

Provided is a biomass-derived isoindoline compound (such as KII or DII) which is safe and can be obtained in a clean and carbon neutral approach. An isoindoline compound containing a radioactive carbon atom 14C and being represented by the following formula (I): in which, in the formula (I), A and B each independently represent an oxygen atom or NH, and R1 to R4 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, or a phenyl group which is optionally substituted with an alkyl group, wherein R2 and R3 optionally undergo ring closure to form a 5- to 8-membered ring.

The invention discloses a method for improving yield of anthocyanin extracted by an enzymic method, according to the method, phospholipase is added and used to act on a cell membrane structure, so that the extraction rate of the anthocyanin and the extraction rate of galactoside in the anthocyanin are obviously improved, and the extraction effect of the anthocyanin is greatly improved through a three-stage enzymolysis system. The total enzymolysis extraction time is within 4 h, and compared with 6-7 h of a traditional enzymatic extraction process, the production period is greatly shortened.

The invention provides fruit anthocyanin as well as an extraction method and application thereof. The extraction method comprises the following steps: S1, raw material pretreatment: selecting fresh fruits, removing impurities, cleaning, draining surface moisture, performing crushing treatment, then performing vacuum drying, and finally performing crushing to obtain fruit powder; s2, extracting three-layer microspheres: preparing an extraction substrate solution, adding the three-layer microspheres, and stirring for 8-12 minutes at the temperature of 40-45 DEG C and the rotating speed of 100-150r / min; the rotating speed is kept at 100-150 r / min, the power is set to be 300 W, the temperature is 42-45 DEG C, working is conducted for 4-6 min, pause is conducted for 1-2 min, and intermittent ultrasonic extraction is conducted for 3-4 h; after the extraction is finished, centrifuging an extracting solution, and collecting supernate to obtain a crude extracting solution; and S3, obtaining a final product of the fruit anthocyanin: filtering, adsorbing, eluting and purifying, concentrating and drying the crude extract to obtain the fruit anthocyanin. A targeted attachment-step conversion-enrichment protection and release linkage system is formed among the three-layer structures of the three-layer microspheres, and 1 + 1 + 1gt is realized; and 3, due to the synergistic effect, the activity and the quality stability of the anthocyanin are guaranteed while the extraction rate of the anthocyanin in the fruits is increased.

The present disclosure relates to the field of textile printing and dyeing technology, and particularly relates to an environmentally-friendly liquid dispersion dye with ultra-low pollution; the environmentally-friendly liquid dispersion dye is prepared by the following steps: preparing a Hippophae rhamnoides extract, dissolving the Hippophae rhamnoides extract in an acid solution and mixing with aluminum hydroxide; preparing a Ginkgo biloba extract, dissolving the Ginkgo biloba extract in an acid solution and mixing with aluminum hydroxide; then mixing the two in a sodium bicarbonate aqueous solution with a complexing agent and a stabilizer, drying to obtain a solid, and finally reacting the solid with polyethyleneimine to obtain an environmentally-friendly orange dye with good dispersibility.

In the process of producing indigo naturalis by taking strobilanthes cusia as a raw material, a very unpleasant smell is generated, a large amount of alkaline wastewater is discharged, and serious environmental pollution is caused. Therefore, development of a more environment-friendly production process and a higher value-added strobilanthes cusia extract is extremely urgent. The invention innovatively provides a green and efficient production process, namely integrally producing the indigo strobilanthes extract and the phenolic acid extract with higher additional values through endogenous enzymatic conversion coupled membrane separation and freeze drying technologies. Through an endogenous enzyme conversion process, the indigo extract with indigo content 20 times and indirubin content 1.8 times higher than that of traditional indigo can be prepared within one day. The phenolic acid extract is recovered from the indigo extract production wastewater by adopting membrane separation and freeze drying processes, and meanwhile, zero discharge of the wastewater can be realized. The prepared indigo extract shows a more excellent dyeing effect on pure cotton poplin than an Indian natural indigo extract. In addition, the prepared phenolic acid extract shows excellent inhibitory activity (IC50 = 32 [mu] g / mL) on staphylococcus aureus, and the wound healing rate of mice exceeds 98%. The method lays a foundation for high-valued and comprehensive utilization of strobilanthes cusia resources, and is of great significance to extension and sustainable and healthy development of a strobilanthes cusia industrial chain.

This invention belongs to the field of plant active ingredient extraction technology, specifically relating to a process for efficiently extracting anthocyanins from black goji berries. The process includes the following steps: Step 1: Preparing black goji berry powder; Step 2: Adding buffer solution to the black goji berry powder to obtain a black goji berry suspension; adding a complex enzyme to the black goji berry suspension for enzymatic hydrolysis, enzyme inactivation, and cooling to obtain an enzymatic hydrolysate; Step 3: Adding Aspergillus niger to the enzymatic hydrolysate for fermentation, sterilization, and obtaining a primary fermentation broth; continuing to add a complex microbial culture for anaerobic fermentation, sterilization, and cooling to obtain a final fermentation broth; Step 4: Performing alcohol extraction on the final fermentation broth to remove ethanol, obtaining a concentrated crude extract; Step 5: Purifying the concentrated crude extract using AB-8 macroporous adsorption resin, drying, and obtaining the black goji berry extract. This invention's process can simultaneously improve the extraction rates of total alkaloids and anthocyanins from black goji berry extract.

The invention provides a preparation method of a common caramel color and the common caramel color, and the preparation method of the common caramel color comprises the following steps: adjusting the pH value of a sugar raw material to 1-2 by using a first acid auxiliary agent, and carrying out a first-stage coking reaction on the sugar raw material to prepare a first-stage material; adjusting the pH value of the first-stage material to 1-2 by using a second acid auxiliary agent, and carrying out a second-stage coking reaction on the first-stage material to prepare a second-stage material; and mixing the second-stage material with water, adjusting the pH value of the mixed system to 4.5-5 by using an alkali auxiliary agent, and carrying out heat preservation treatment at 90-100 DEG C to prepare the common-method caramel color. The application coloring ability of the common-method caramel color vegetable prepared by the preparation method is remarkably improved, so that the application quality of common-method caramel color in food coloring is effectively improved.

The invention belongs to the technical field of food additives, and particularly relates to a method for preparing caramel pigment from organic meal and molasses under microwave gradient heating, which comprises the following steps: S1, hydrolyzing the organic meal: mixing the organic meal with sodium bicarbonate, then adding pure water, then putting the mixed feed liquid into a microwave heater for hydrolysis, and filtering to obtain filtrate; precipitating and filtering solid impurities from the reacted feed liquid to obtain organic cake meal hydrolysate; s2, preparing caramel pigment: adding water into cane molasses for dilution, then mixing the diluted cane molasses with the organic cake hydrolysate, then putting the mixed solution into a microwave heater, carrying out gradient heating reaction, filtering the reaction solution after the reaction is finished, and evaporating and concentrating the filtrate to obtain the caramel pigment. According to the caramel pigment and the preparation method thereof, the problems of high production cost and insufficient safety of the caramel pigment in the prior art can be solved, and the caramel pigment which is good in flavor, high in color rate and excellent in safety and stability can be formed while the cost of the caramel pigment can be remarkably reduced.

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 discloses a method for increasing the yield of monascus pigment through liquid fermentation, the monascus pigment is obtained through spore culture, seed culture, liquid fermentation and monascus pigment extraction by taking monascus as a production strain, and macroporous resin is added into a fermentation culture medium. According to the method, the yield of liquid fermentation of the monascus pigment can be greatly increased, the monascus pigment is concentrated in precipitates, namely resin and hyphae after solid-liquid separation is carried out on the fermentation product, a water phase of fermentation liquor does not contain pigment, separation and extraction of downstream fermentation products and treatment of fermentation waste liquor are facilitated, and the method has good market prospects and market value.

The present invention relates to a cosmetic composition containing an organic effect pigment, wherein the organic effect pigment comprises cellulose nanocrystalline flakes, the cellulose nanocrystalline flakes having an average size in the range of 10 to 6500 micrometers.

The invention discloses a batik pigment based on natural plants. The batik pigment comprises the following raw materials: a basic auxiliary agent and at least one color development plant, the basic auxiliary agent is prepared from the following components in parts by weight: 3 to 8 parts of gallnut and 2 to 6 parts of rhizoma curcumae longae; the color development plants comprise the following components in parts by weight: 10 to 20 parts of radix rubiae, 5 to 15 parts of radix scutellariae and 5 to 12 parts of indigo grass. The invention further discloses a batik process adopting the batik pigment. According to the batik pigment based on the natural plants, the problems that a traditional plant dye is single in chromatography and unstable in color matching are solved, the chromatography of the batik pigment is rich and controllable, and the requirement of the batik technology for rich colors is met; the dye is excellent in stability and long in storage life; a wax printing process is adapted, the dyeing effect is stable, and the color fastness is high.

The invention discloses a printing method of green persimmon extracted color paste, and relates to the technical field of natural plant dye printing. According to the method, immature green persimmons are used as raw materials, cell structures of the green persimmons are destroyed through cellulase and ultrasonic treatment, the extraction rate of tannin is increased, then tannin is further purified through an ultrafiltration membrane and macroporous resin, and purified tannin is obtained. Laccase is used for catalyzing tannin polymerization, the polymerization degree of tannin is improved, and then the tannin is used for preparing color paste for silk-screen printing and manufacturing cloth printed in a persimmon color paste style. The dye disclosed by the invention is from natural plants, the product is high in affinity to a human body, non-toxic and harmless, and the prepared printing is unique in style and relatively high in color fastness to washing, color fastness to rubbing and color fastness to light.