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294results about How to "Avoid darkening" patented technology

Preparation technique of isosorbide

The invention relates to a preparation technique of isosorbide, belonging to the technical field of pharmacy. In the preparation technique, solid sorbitol is used as the raw material, a mixture of perfluoro-sulfonic acid resin and palladium on carbon is used as the catalyst, and hydrogen is used as an anti-carbonation agent to prepare the non-carbonized light-colored isosorbide reaction liquid; and low-temperature concentration and solvent crystallization are utilized to substitute the original high-temperature distillation. The preparation technique comprises the following steps: dehydration reaction, neutralization decolorization, electrodialysis desalination, water removal by concentration, extraction crystallization, freeze-drying, and quality inspection and packaging (after the product is qualified in inspection, packaging, and warehousing as the finished product). The invention can prevent carbonization and prevent the reaction liquid from becoming dark, thereby enhancing the utilization ratio of the raw material; most calcium salts are precipitated due to low solubility, and the electric conductivity of the reaction liquid is low, thereby being beneficial to subsequent extraction; and the invention overcomes the defect of high energy consumption in the high-temperature distillation technique, and the quality of the prepared isosorbide is more excellent.
Owner:SHANDONG FUTASTE

Alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture

The invention discloses an alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture which is prepared from the following raw materials in percentage by weight: 28-35% of ordinary silicate cement, 22-35% of coal ash, 22-32% of super fine activated admixture, 3-8% of needle-shaped wollastonite powder, 3-8% of coarse whiting powder, 0.5-2% of redispersible latex powder, 0.1-0.6% of a water repellent, 0.1-0.6% of cellulose ether, 0.1-0.6% of an alkali efflorescence inhibitor, 0.1-0.5% of wood fiber and 0.1-0.3% of a defoaming agent. Due to the adopted super fine activated admixture, the alkali efflorescence phenomenon of an ordinary cement base joint mixture is effectively inhibited, and the overall decoration effect of the tile joint mixture is greatly improved. The water repellent used in the joint mixture is redispersible water repellent powder which has good peaceability with water, so that the joint mixture has a very excellent overall water repellent effect in a hardened state and is especially applicable to relatively damp places such as bathrooms and swimming pools.
Owner:黄美忠

Kumquat tea and its preparation method

The invention provides a kumquat tea and its preparation method. The kumquat tea is prepared through cleaning, kumquat pretreatment, pulp removal, first roasting, tea filling, second roasting, and naturally air-drying. The kumquat tea comprises a kumquat shell and tea leaf located in a container; the kumquat shell comprises a kumquat main body and a kumquat cover body; air holes are arranged on the kumquat main body and the kumquat cover body; after fully filling tea in the kumquat tea container, the kumquat cover body is buckled in an opening of the kumquat main body by means of the kumquat elasticity, so that the kumquat cover body is located on the tea leaf. The kumquat tea is featured by good air permeability, easy dryness, long tea expiration date, uneasily-leaked tea leaf in the process of brewing and aromatic flavor.
Owner:张勤玲

Processing technology of immature tangerine Pu'er tea

InactiveCN108077482APrevent oil volatilizationGreat tastePre-extraction tea treatmentAlpinia roxburghiiAir drying
The invention discloses a processing technology of immature tangerine Pu'er tea. The processing technology comprises the following steps: taking palace-grade Pu'er tea processed from a special-grade spring tea raw material of old trees in mountains 1500 meters or higher in elevation, and immature tangerines with large oil sacs, full oil cavities and uniform size from 8 year-old or older old treesin Xinhui first-grade producing areas, as raw materials; and selecting the Pu'er tea, selecting the immature tangerines, performing primary cleaning on the immature tangerines, digging out the pulp ofthe immature tangerines, performing secondary cleaning and dewatering on the immature tangerines, performing fixation on the immature tangerines, performing primary drying, filling the immature tangerines with the tea, and performing secondary drying, air drying, packaging and storing to obtain the immature tangerine Pu'er tea. In comparison to traditional technologies, the processing technologyof the immature tangerine Pu'er tea avoids bad mouthfeel and easy damping of the tea due to dampness in the immature tangerines, solves the problem of nutrient loss of the tangerine peel due to rapidhigh-temperature drying, improves the nutritional value of a product and has better popularization prospects.
Owner:江门市新会陈益号陈皮茶业有限公司

Processing method of low-temperature vacuum fried fragrant and crispy fish oil immersed can

The invention discloses a processing method of a low-temperature vacuum fried fragrant and crispy fish oil immersed can. The method comprises the following steps that whitebait is used as ingredients for making fragrant and crispy fish, after the cleaning and the deodorization, low-temperature vacuum frying is adopted, auxiliary ingredients are added for seasoning and oil immersing, vacuum can sealing is carried out, finally, the sterilization is carried out, and finished products are obtained. The method solves the problems that in traditional frying process, the nutrition loss is high, the excessive dewatering is caused, the tissue contraction is serious, the texture is harder, and the color of the finished products is hard. The oxidation deterioration of edible grease can be effectively prevented, the mouth feeling on the product is loose and crispy, and safety and sanitation are realized, so the product quality is more applicable to the modern consumption requirements.
Owner:FUZHOU JINFULIN FOOD

Multi-effect whitening and freckle-removing cream and preparation method thereof

PendingCN111249215AAvoid darkeningImprove the problem of pigmentationCosmetic preparationsToilet preparationsAlpinia zerumbetChemistry
The invention discloses multi-effect whitening and freckle-removing cream and a preparation method thereof. The whitening and freckle-removing cream comprises the following whitening and freckle-removing components in percentage by mass: 0.01-1% of dimethylmethoxy chromanol, 0.01-10% of vitamin C-ethyl ether, 0.01-5% of arbutin and 0.01-5% of plum enzyme hydrolysate; and comprises the following anti-wrinkle components in percentage by mass: 0.01-3% of alpinia zerumbet leaf extract, 0.01-3% of a palmityl polypeptide mixture, 0.01-3% of an acetyl hexapeptide-8 solution, and 0.1-5% of cannabis leaf extract. The whitening and freckle-removing cream does not use an emulsifier, and is mild and non-irritant; a softener is plant-derived, has good skin friendliness and is easy to absorb; active ingredients with various effects are also added, so that the cream has relatively good whitening, freckle-removing and anti-wrinkle effects; and the preparation method of the whitening and freckle-removing cream is simple and convenient, and can provide the effective whitening and freckle-removing cream with the anti-aging effect for consumers.
Owner:广东肽世家生物科技有限公司 +1

Furan dicarboxylic acid copolyester and preparation method thereof

The invention relates to furan dicarboxylic acid copolyester and a preparation method thereof. The preparation method comprises the following steps: mixing a first component, a second component and athird component with the mole ratio of 1 to (1.1 to 2.0) to (0.0001 to 0.02) with an esterification catalyst to obtain a first intermediate product, wherein the first component comprises at least oneof furan dicarboxylic acid and a furan dicarboxylic acid ester compound, the second component comprises at least one of aromatic diol and aliphatic diol, and the third component comprises polyhydric alcohol with hydroxyl number being greater than or equal to 3; performing prepolymerization reaction and polycondensation on the first intermediate product to obtain the furan dicarboxylic acid copolyester. In the preparation method, the polyhydric alcohol with hydroxyl number being greater than or equal to 3 serves as a connection point of chain segments, so that the chain segment structure of thefuran dicarboxylic acid copolyester is expanded to a network structure, thereby obtaining the colorless or lightcolor furan dicarboxylic acid copolyester with excellent mechanical property and air barrier property and high molecular weight.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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