12results about How to "Color stable" patented technology

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.

The invention relates to a preparation method of soluble sugar substitute based on Jinxiu sweet tea pigment, and belongs to the technical field of food processing and natural product extraction.The preparation method comprises the steps that Jinxiu sweet tea leaves serve as raw materials, and composite enzymolysis, hot water extraction, membrane separation and concentration, stable blending and spray drying are sequentially conducted. The method comprises the following steps: synergistically releasing sweet taste and pigment components through enzymolysis and extraction, purifying and concentrating through a membrane technology, and protecting through a stabilizer system to finally obtain a powdery product. The sugar substitute has high sweetness and stable brownish red color, realizes integration of sugar and color, can be used as a natural sweetening agent and a coloring agent to be directly used in milk tea, coffee and other food beverages, simplifies the formula and process, and meets the label cleaning requirements.

The utility model relates to tertiary butyl phenol production technical field, concretely is tertiary butyl phenol discharge packing system. Tertiary butyl phenol discharge packing system, including renewable molecular sieve tank, renewable molecular sieve tank is connected with raw material tank through pressure stabilizing tank, and raw material tank is connected with storage temporary storage tank through backwashing filter, and storage temporary storage tank is connected with conveyer belt through scraper forming machine, and conveyer belt is connected with nitrogen replacement temporary storage bin through vacuum nitrogen filling packing machine, and backwashing filter is connected with flushing water storage tank. The system is through renewable molecular sieve tank deep drying nitrogen, inert gas atmosphere whole process protection (raw material tank pre-charging nitrogen, storage temporary storage tank micro positive pressure control, vacuum nitrogen filling packing), from the source isolates oxygen, significantly reduces tertiary butyl phenol oxidation risk, stabilizes product colority and chemical purity.

The utility model discloses a simple device for water quality detection, and relates to the technical field of water quality detection. Comprising a suitcase main body, the suitcase main body is provided with a mounting mechanism for water quality detection equipment, and the mounting mechanism comprises the following steps: shaking a test tube to enable a water source and pH test paper to be in full contact and react more fully, so that inaccurate detection results caused by local concentration difference are avoided, and the detection results can better represent the pH value of a whole water sample; the detection accuracy and reliability are improved, shaking promotes material exchange between a water sample and the test paper, the reaction reaches a balanced state more quickly, the test paper can present a stable color more quickly, so that the detection time is shortened, the detection efficiency is improved, the test tube is shaken without additional complex equipment or operation steps, and the detection accuracy and reliability are improved. Therefore, full contact between a water source and the test paper and mixing of the water source can be realized, and a user can conveniently and quickly detect water quality in different scenes.

The mixing device for producing the compound coloring agent comprises a tank body and a tank cover which are connected into a whole through a flange, the tank cover is provided with a feeding port, and the bottom of the tank body is provided with a discharging port; a mounting frame, a rotary power mechanism, a stirring shaft and a stirring unit are arranged on the tank cover; the tank cover is provided with an upper bracket, a nitrogen supply ring pipe, a nitrogen outlet hole and a tank body air emptying port; a lower bracket, an argon supply ring pipe and an argon outlet hole are arranged on the tank body; a heat exchanger is also sleeved on the outer wall of the middle part of the tank body; the mixing device is provided with a nitrogen and argon dual inert gas protection system, nitrogen can be uniformly introduced into the upper part of the tank body through the annular pipe and the gas supply hole of the nitrogen supply assembly on the tank cover, and air in the tank body is naturally discharged from the air discharge port of the tank body, so that the contact between oxygen and materials is reduced, the oxygen is effectively isolated, and the material quality is improved. Oxidative deterioration of the coloring agent is prevented, and color stability and quality safety of the product are guaranteed to the maximum extent.

The invention belongs to the technical field of food processing, and particularly relates to a method for improving the processing quality of dehydrated onions based on freezing and salting. According to the present invention, the onion is dehydrated by using the catalytic infrared combined hot air drying manner, and the fresh onion is subjected to the salting permeation synergistic freezing pretreatment before drying, that is, the fresh onion is subjected to the soaking treatment by using the low-concentration NaCl solution, and then is frozen for 18-24 h at the temperature of-25--18 DEG C. After the pretreatment, the subsequent drying time is substantially shortened, and the drying efficiency is substantially improved; the obtained dehydrated onions have little color change, the loss of flavones, aroma components and the like in the onions is greatly reduced, and the processing quality of the dehydrated onions is remarkably improved.

The invention relates to the technical field of mixed drinking tea beverages, and provides Wuniu early mixed drinking tea and a preparation method thereof. The preparation method comprises the following steps: carrying out pretreatment and deoxidation treatment on drinking water to obtain low-dissolved-oxygen softened water; wuniuzao black tea original leaves are subjected to fractional extraction with low-dissolved-oxygen softened water, and a tea base is obtained; preparing pretreated waxberry juice and early-fragrant pomelo juice; blending a tea base, the pretreated waxberry juice, early-fragrant pomelo juice, a sweetening agent, old wine sweat and low-dissolved-oxygen softened water to obtain mixed tea juice; and performing homogenization treatment and sterilization treatment on the mixed tea juice, and performing filling and sealing to obtain the Wuniu early-blending drinking tea. According to the preparation method disclosed by the invention, the problem of insufficient stability is solved on the premise of no preservatives, antioxidants and stabilizers through combination of various means such as water demineralization and deoxidation, segmented tea extraction, advanced deoxidation and anti-browning treatment of fruit juice, inert gas oxygen-controlled mixing and the like, and the color and flavor stability of the product in the shelf life storage process is improved.

This invention belongs to the field of ceramic materials and processing technology, and relates to a stable glazed ceramic hot-bent slab and its preparation method. The invention includes a green body and a glaze. The green body adopts a multi-component composite flux system, including 20-25 parts quartz, 18-22 parts calcined kaolin, 18-22 parts potassium feldspar, 22-25 parts sodium feldspar, 8-12 parts wollastonite, 2-3 parts magnesium oxide, 0.2-0.5 parts iron oxide, and 0.1-0.3 parts titanium dioxide. The glaze includes 50-70 parts frit glaze, 0.5-5 parts coloring oxide, 2-6 parts alumina, and 1-4 parts zinc oxide. Through innovative green body and glaze formulations and optimized secondary hot-bending heat treatment processes, this invention achieves a hot-bending temperature ≤1150℃ and a holding time ≤60min. The resulting ceramic hot-bent slab has advantages such as high forming accuracy, no surface cracks, good strength retention, small glaze color difference, and low energy consumption, and has good prospects for industrial application.

The invention discloses a sulfur-free big red star anise processing method based on endogenous metabolism precursor regulation and application, mature star anise fresh fruits with yellow peels and full seeds are used as raw materials, and the processing method sequentially comprises three links of ultraviolet stress pretreatment, short-time hot water fixation and segmented drying. Through ultraviolet treatment, red precursor metabolites such as reduced glutathione, phenolic acid, flavone, stilbenes and sugar phosphoric acid are enriched in the fruits; the polyphenol oxidase is rapidly inactivated through short-time hot water fixation, the precursor pool is stabilized, and the quality loss is controlled; in the drying stage, the precursor is promoted to be gradually converted into phenolic acid oxidation products, aromatic aldehyde, aromatic amino acid-containing small peptides and terpenoid aroma substances in a sulfur-free environment, and stable bright red color and typical aroma are formed. Compared with a traditional sulfur fumigation process, the method has the advantages that the bright red star anise with high red brightness, low fruit cracking rate, natural flavor and remarkably reduced sulfur residue risk can be obtained under the condition that sulfur is not used, and the method is suitable for green and safe processing and standardized production of the star anise industry.

This invention discloses a highly stable, high-brightness, fast-dissolving, dust-free natural blue composition granules, its preparation method, and its applications, belonging to the field of pigment extraction technology. This natural blue composition uses gardenia blue, butterfly pea flower extract, and phycocyanin extract as the ternary coloring components, compounded with buffers (phosphates) and antioxidants (vitamin C and tea polyphenols), and employs an embedding wall material (β-cyclodextrin and sodium caseinate) for emulsification and embedding. Finally, it is produced into composite granules through spray drying and dry granulation processes. The composition granules exhibit a bright and vibrant color, excellent light and heat resistance, rapid dissolution in water without dust generation, and are environmentally friendly. This invention also provides a method for preparing the composition granules and their application as a colorant in food, pharmaceuticals, and cosmetics, offering a safe, stable, and efficient comprehensive solution to replace petroleum-based synthetic blue pigments.

The invention belongs to the technical field of grain and oil crop processing, and relates to a cyperus esculentus peeling method, which comprises: (1) carrying out heat treatment on cyperus esculentus by using hot water or water vapor; and (2) carrying out alkali liquor soaking treatment on the cyperus esculentus subjected to heat treatment. According to the method disclosed by the invention, through the step of adding hot water or water vapor to treat the cyperus esculentus, wax on the epidermis of the cyperus esculentus can be softened, a wax barrier can be destroyed, alkali liquor can permeate into the epidermis more easily and can play a role more efficiently, and the loosening efficiency of the epidermis of the cyperus esculentus is improved; after the cyperus esculentus is subjected to subsequent treatment of alkali liquor soaking, the technical effect of almost 100% peeling can be achieved; the mandulapalka peeling machine is suitable for mandulapalka of different producing areas and varieties, is not influenced by the sizes and shapes of tubers, and can realize the effect of completely peeling the outer skins of the mandulapalka in batches; the peeled cyperus esculentus is treated by a food-grade citric acid solution, so that the color and flavor of the cyperus esculentus are stabilized.

This application provides an ink formulation and process for improving the stability of gravure proofing production, relating to the field of printing technology. The ink formulation provided in this application includes 60-70% binder, 10-18% pigment, 0.5-1% defoamer, 1.5-3% filler, 1-3% alcohol solvent, and water as the balance. The filler is silane coupling agent-modified calcium carbonate; the binder is an aqueous acrylic emulsion or polyurethane emulsion with a mass ratio of (30-85):(15-70). This polyurethane emulsion is prepared by reacting aliphatic diisocyanate and L-lysine diisocyanate with a polyol, and a 3-methoxy-4-hydroxymandelic acid chain extender is introduced. Using this ink formulation for printing avoids the low production efficiency and increased production costs caused by repetitive labor, achieving stable gravure printing production. The printed products have uniform and stable color, high adhesion, and good durability.