3556results about "Natural dyes" patented technology

The present invention provides a novel process for extraction, purification and concentration of polyphenol substances from whole grapes, grape seeds and grape pomace without the need for membrane filtration. Aspects of several embodiments of the novel processes include hot water extraction, a dual pH treatment of the hot water extracts, and the uses of a copolymer of trimethylolpropane trimethacrylate as an adsorbent resin to maximize the concentration and purification of the beneficial polyphenolic substances.

A process for simultaneously extracting, saponifying, and isolating lutein and zeaxanthin, and a mixture of several rare carotenoids in high purity from plants without the use of harmful organic solvents. Lutein crystals containing 5% zeaxanthin were obtained from the dried petals of Marigold flowers Tagete erecla while zeaxanthin was isolated and purified from the berries of Lycium Chinese Mill (LCM berries). Similarly, this process has been employed to isolate and purify a mixture of lutein, beta-carotene, neoxanthin, violaxanthin, and lutein epoxide from green plants, preferably, kale, collard green, and spinach. These plants, to a lesser extent, also serve as a source of several rare carotenoids such as alpha-cryptoxanthin (Marigolds) and beta-cryptoxanthin (LCM berries). The purified carotenoids isolated by this process are free from impurities and serve as a safe source of nutritional supplement for human consumption as well as providing a suitable and effective color additive for human foods.

The invention relates to a method for extracting blueberry anthocyanin, which comprises the following steps of: (1) pretreating a raw material; (2) extracting the blueberry anthocyanin, namely adding extracting solution in a volume ratio of the raw material to liquid for leaching to obtain leach liquor, centrifugally collecting and merging clarified supernate which is leached and centrifuged twice, and centrifuging and concentrating under reduced pressure to obtain crude extract of the blueberry anthocyanin; and (3) refining the blueberry anthocyanin, namely adsorbing and eluting the crude extract of the blueberry anthocyanin through macroporous resin, concentrating eluent under reduced pressure, and performing freeze drying or spray drying on concentrated solution of the blueberry anthocyanin to obtain a finished product of the blueberry anthocyanin. The method solves the problems of strong harvesting seasonality and difficult storage of blueberry fruits and huge economic loss due torot caused by the unsalable blueberry fruits, has the advantages of simple process, controlled operation, low cost and no pollution, and is particularly suitable for extracting the blueberry anthocyanin on a large scale.

A composition comprising coloring substance bodies that are at least partially coated with beet pectin, chicory pectin and / or Jerusalem artichoke pectin or other pectin types having a high degree of acetylation. The composition which may be water dispersible is useful for preparation of health improving products and / or coloring products for use in the coloring of edible products including food products and nutraceuticals, and for coloring of pharmaceutical products.

A method of preparing colored products from edible materials comprises processing Genipa americana fruit juice, which contains genipin, genipin derivatives, or pre-genipin compounds, with other edible juices or extracts which contain nitrogenous compounds such as amino acids, polypeptides, or proteins. The generated natural colored products have excellent stability and can be used in a broad range of applications including beverages, foodstuffs, drugs, dietary supplements, cosmetics, personal care stuffs, and animal feeds.

The invention discloses a method for preparing gardenia pigments from Gardenia jasminoides Ellis, and belongs to the technical field of natural pigment preparation methods. The method comprises the following steps: carrying out crushing peeling, extraction, filtration, macroporous resin purification, eluting, concentrating, drying and the like on Gardenia jasminoides Ellis which is a raw material to obtain a gardenia yellow pigment and geniposide, and processing the geniposide through a biological engineering technology and a membrane filtration and acid precipitation process to prepare a gardenia blue or red pigment. The method allows the production cost of the gardenia yellow pigment to be reduced and the comprehensive utilization level of the raw material to be simultaneously improved; and the prepared series pigments can be applied to fields of foods, health products, cosmetics, medicines and the like.

The invention relates to a formula and production method for preparing a peach wheat straw dye. The formula takes roses, lichenes, tulipa primulina, white alum, an iron ion compound solution and mineral water as main raw materials. The main process flow of the production method comprises the following steps: selecting materials; cutting the materials; drying; soaking; carrying out hot stewing; mixing; depositing; and dyeing to obtain a finished product. The formula and production method disclosed by the invention are used for preparing the peach wheat straw dye which is purely natural, pollution-free, green and environmental-friendly without toxic and side effects on human bodies and is prepared from pure natural plants.

The invention relates to a method for extracting cyaniding and belongs to the technical field of extracting natural medicaments. The method adopts the process of ultrasonic-assisted enzyme method extraction, flocculation, ultrafiltration, macroporous resin adsorption, nanofiltration condensation, spray drying and high-purity cyaniding. Compared with the traditional processes, the method has the advantages of overcoming the defects in the traditional processes, effectively improving the yield and the quality of the product, greatly lowering the consumption and the loss of the organic solvents,reducing energy consumption, lowering production cost, having practicability and progress and reaching the domestic leading level.

The invention discloses a formula and a production method for preparing a deep yellow wheat straw dye. Gamboge tree resin, grass bouquet box, amur corktree, madder, senna leaf, alumen, a ferric ion compound solution and spring water are taken as main raw materials. The production method comprises the following main technological processes: sorting, cropping, drying, soaking, hot boiling, mixing, participating, dyeing, and forming a product. According to the formula and the production method for preparing the deep yellow wheat straw dye, the deep yellow wheat straw dye prepared from pure natural plants is pure natural, free of pollution, green and environment-friendly, and free of toxic and side effects on a human body.

The invention relates to a new process for extracting high-purity gardenia yellow pigment by a membrane separation and purification technology. The new process comprises processes of purified water leaching, crude separation and impurity removal, membrane separation and purification, and membrane concentration. After purified water extraction and ultrasonic assisted extraction, raw gardenia is separated by three centrifuges with different specifications and then obtained leaching liquor enters a membrane separation, purification and concentration system which consists of a microfiltration membrane (MF), an ultrafiltration membrane (UF), a nano-filtration membrane (NF) and a reverse osmosis membrane (RO), thus an OD value of the obtained gardenia yellow pigment can be controlled below 0.4 and color number can be increased to be more than 400. The finished product obtained by the process has no residual organic solvent and completely meets technical requirements for exporting to developed countries, including Europe and America, etc. as well as developed areas. The process is safe and clean in the whole production process, capable of realizing zero pollution and zero emission, has high environmental protection performance, and has advantages of greatly reducing energy consumption and lowering production cost due to the membrane concentration technology. The process further has advantages of simple process, stable product quality, high purity, etc.

The invention relates to a formula and production method for preparing a bright yellow wheat straw dye. The formula takes flos sophorae, white alum, an iron ion compound solution and mineral water as main raw materials. The main process flow of the production method comprises the following steps: selecting materials; cutting the materials; drying; soaking; coloring; spin-drying; and fixing a color to obtain a finished product. The formula and production method disclosed by the invention are used for preparing the bright yellow wheat straw dye which is purely natural, pollution-free, green and environmental-friendly without toxic and side effects on human bodies and is prepared from pure natural plants.

The invention discloses a formula and a production method for preparing a dark olive green wheat straw dye. Nuphar pumilum, digitalis flower, miscanthus sinensis, alumen, a ferric ion compound solution and spring water are taken as main raw materials. The production method comprises the following main technological processes: sorting, cropping, drying, soaking, hot boiling, mixing, participating, dyeing, and forming a product. By adopting the formula and the production method for preparing the dark olive green wheat straw dye, the dark olive green wheat straw dye prepared from pure natural plants is pure natural, free of pollution, green and environment-friendly, and free of toxic and side effects on a human body.

A method for abstructing hydrosoluble haematochrome from flesh and peel, which has the characteristics that crack the shell of with red flesh and peel, then press and centrifuge to get the separating medium, abstract extracting solution by alcohol, mix the separating medium and extracting solution to be pigment solution which is changed to be that with pigment through reduced pressure distillation for recycling alcohol, then use alcohol to refinie, clear water away by reverse osmosis and dry it be the product. Its peel is dried in micro-wave oven, which is then scattered, with alcohol being added into, get the pigmen solution which is then placed into micro-wave oven, through reduced pressure distillation to recycle alcohol, with the remainder being added with buffer solution whose PH value is separating medium being dissolved, filtered and cleared water by reverse osmosis, then dried by bain marie with high efficiency. The invention has kept the natural biological active pigmen components.

The invention relates to a formula and a production method for preparing brown wheat straw dye. The formula is characterized by adopting dry hibiscus mutabilis, isatis tinctoria, alumen, areca-nut, an iron-ion compound solution and mineral water as main raw materials. The production method comprises the following main steps of sorting, cutting, drying, soaking, boiling, mixing, precipitating, dying and forming a finished product. The invention relates to the formula and the production method for preparing the brown wheat straw dye which is pure natural, pollution-free, environment-friendly and free from toxic and side effects on the human body and prepared by from the pure natural plants.

Tea polyphenol obtained by the extraction from tea has an antibacterial effect. In methods for producing an antibacterial fiber by fixing the tea polyphenol to fiber, the object of the present invention is to provide a process for manufacturing an antibacterial fiber capable of exerting an excellent antibacterial performance without the use of metal chelates potentially causing metal allergy and environmental problems. In order to achieve the above object, the present invention manufactures an antibacterial fiber by a process comprising the steps of contacting fiber with or immersing fiber in an aqueous solution in which a cationic surfactant with a quaternary ammonium salt group, a water-soluble protein, and an alkaline compound are dissolved; and separating said fiber from the aqueous solution, to immerse the fiber in another aqueous solution containing tea polyphenol.

The invention relates to a formula for preparing a lemon-yellow wheat straw dye and a production method of the lemon-yellow wheat straw dye. According to the formula, garcinia multiflora, white alum, an iron ion compound solution and mineral water are taken as main raw materials. The production method of the lemon-yellow wheat straw dye comprises the main process flows of selecting materials, cutting the materials, drying, soaking, boiling, mixing, precipitating, dyeing and obtaining a finished product. According to the formula for preparing the lemon-yellow wheat straw dye and the production method of the lemon-yellow wheat straw dye, the lemon-yellow wheat straw dye is purely natural, pollution-free and environmental-friendly, is free from toxic and side effects on human bodies and is prepared from purely-natural plants.

The invention relates to a formula and production method for preparing a yellow wheat straw dye. The yellow wheat straw dye is mainly prepared from locust tree flower, garcinia, white alum, an iron ion compound solution and mineral water. The production method mainly comprises the following steps: material selection, cutting, drying, immersion, hot boiling, mixing, precipitation and dyeing to obtain the finished product. The yellow wheat straw dye prepared from purely natural plants is purely natural, green and environment-friendly, and has the advantages of no pollution and no toxic or side effect on the human body.