285results 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.

A marker composition for application to a medical device or a surface is disclosed. The marker composition comprises a carrier composition including water, nonionic surfactant, organic solvent, and a neutral or anionic viscosity modifier. The marker composition further comprises a dyestuff. In some embodiments, the quantity of dyestuff present is such that at least some of the dyestuff is present as a dispersed solid phase. The dyestuff may be a naturally-derived dyestuff, such as spirulina extract (including phycocyanin). The invention extends to a carrier composition for a dyestuff.

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 discloses the technical field of anthocyanin extraction, and particularly relates to a method for extracting anthocyanin in blueberries by using a sodium alginate immobilized enzyme. According to the method, blueberries are used as a raw material, sodium alginate is used as a carrier to immobilize cellulase, and process conditions for extracting anthocyanin are optimized, including sodium alginate concentration, enzymolysis temperature and time, enzyme concentration and enzyme proportion. The immobilized enzyme is applied to an anthocyanin extraction process, when the temperature is 50 DEG C and the reaction time is 3h, the yield of anthocyanin is improved by 18.7% compared with that of free enzyme, and the activity of the immobilized enzyme still keeps 75% or above after the immobilized enzyme is repeatedly used for five times. In addition, the sodium alginate immobilized enzyme shows good thermal stability.

The invention relates to the technical field of extraction, in particular to natural pigment extraction equipment based on freeze-dried Chinese wolfberry fruits. The device comprises a pigment extraction tank, a driving motor is fixedly mounted at the top of the pigment extraction tank, and a mixing mechanism is arranged in the pigment extraction tank. According to the screening mechanism, through a rotating cylinder and a screening plate, crushed Chinese wolfberries are evenly thrown in a rotating and scattering mode, raw material accumulation is prevented, the Chinese wolfberries are dynamically screened and classified, the consistency of the material granularity is ensured, and the effect of mixing the Chinese wolfberries through stirring blades is further improved through even throwing of the Chinese wolfberries; meanwhile, the cleaning brush cleans residual Chinese wolfberry fruits on the screening plate in the rotating process, the residual Chinese wolfberry fruits on the screening plate are timely cleaned, screening holes can be prevented from being blocked, it is ensured that dynamic screening and grading operation of the screening mechanism on Chinese wolfberry fruit raw materials is continuously and efficiently conducted, and the stable screening function enables the Chinese wolfberry fruit materials entering the pigment extraction link to be consistent in granularity; the contact between the medlar and the solvent is more uniform.

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.

To stably and efficiently provide a sweet potato-derived anthocyanin pigment composition showing a blue purple color tone from a weakly acidic region to a neutral region.SOLUTION: A method for preparing a sweet potato-derived anthocyanin pigment composition showing a bluish purple color tone or blue purple color tone from a weakly acidic region to a neutral region, includes: extracting a water-soluble composition indicating such a compositional feature that percentage contents of only three kinds of cyanidin type anthocyanin of a YGM-0c anthocyanin, a YGM-1a type anthocyanin and a YGM-2 type anthocyanin show 70-lower percent or more of the total anthocyanin, and the percentage content of the total of the cyanidin type anthocyanin shows 80 percent or more of the total anthocyanin, under an acid condition, by using a tuberous root of a sweet potato plant belonging to "Tyurakanasa" as a raw material.SELECTED DRAWING: Figure 1

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.

The invention relates to the technical field of candle coloring processes, in particular to a candle coloring method based on natural water-soluble vegetable dye, which comprises the following steps: S1, plant pigment extraction, S2, wax base pretreatment, S3, gradient coloring, S4, color fixation treatment and S5, storage in dark. Natural plants are adopted as plant dye to replace traditional petroleum-based chemical dye, decomposition products after combustion can be naturally degraded, the environment-friendly and safe effects are achieved, through innovative emulsification system construction and a gradient coloring technology, lecithin is used as a dispersing agent, three-section type temperature gradient stirring is combined, pigment evenly permeates into a wax base, and the color fastness is improved. The palm wax is added to enhance the adhesive force, and the alum solution is used for mordanting, so that the stability of the plant pigment and the antioxidant protection of the vitamin E are remarkably improved, and the pigment attenuation caused by ultraviolet rays is effectively delayed; therefore, a safe, non-toxic and color-lasting coloring solution is provided for the candle industry.

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 gradient extraction of a composite tea pigment through cooperation of salted ginger and directional oxidation and application, and belongs to the technical field of natural product extraction. The method comprises the steps of salting pretreatment, ginger juice enzymolysis, gradient oxidative polymerization (the proportion of theaflavin TF, thearubigin TR and theabrownin is accurately controlled by regulating and controlling temperature, pH and Cu < 2 + > and Fe < 3 + > ions), targeted separation and purification and chitosan-sodium alginate nano embedding (the particle size is 150 + / -20 nm, the Zeta potential is + 32.5 mV, and the encapsulation efficiency is greater than or equal to 75%), and the bioavailability is improved. The free radical scavenging rate is synergistically improved by 2.3 times through the salt and the ginger, the ingredient proportion is controllable through gradient oxidation, and the bioavailability is improved by 3.2 times through nano delivery. The prepared compound tea pigment has caffeine residue of less than or equal to 0.5% and gingerol of more than or equal to 4.5%, has antibacterial activity 4 times higher than that of a single component, is suitable for preparing medicines, health care products and functional foods, can be used for developing medicines for resisting metabolic diseases such as atherosclerosis, diabetes mellitus and tumors, and has the advantages of high yield, function enhancement, wide application and the like.

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.