32 results about "Erythrose" patented technology

The invention provides methods for the production of erythrose and/or erythritol. Preferably, the methods include the step of electrolytic decarboxylation of a ribonic acid or arabinonic acid reactant to produce erythrose. Optionally, the reactant can be obtained from a suitable hexose sugar, such as allose, altrose, glucose, fructose or mannose. The erythrose product can be hydrogenated to produce erythritol.

The invention discloses a corynebacterium glutamicum engineering strain for biosynthesis of rare sugar, and a building method and application thereof, and discloses a corynebacterium glutamicum recombination strain SY10. An experiment proves that rare ketose and deoxidized ketose can be synthesized by adopting a plurality of hydroxyaldehydes and glucoses as substrates by the strain in a fermentation manner, for example, D-erythrulose can be synthesized by adopting formaldehyde and glucose as substrates, L-xylulose can be synthesized by adopting glycolaldehyde and glucose as substrates, D-sorbose and D-psicose can be synthesized by adopting D-glyceraldehyde and glucose as substrates, L-fructose can be synthesized by adopting L-glyceraldehyde and glucose as substrates, and 3R, 4S, 5R, 6R-heptose and 3R, 4R, 5R, 6R-heptose can be synthesized by adopting D-erythrose and glucose as substrates. Therefore, the corynebacterium glutamicum recombination strain SY10 disclosed by the invention can be applied to the field of production of the rare ketose and the deoxidized ketose by whole-cell fermentation; the produced rare ketose and deoxidized ketose have broad application prospects in the industries such as a food, a medicine and the like.

The invention provides a novel method for preparing high value-added chemicals by selectively photo-catalytically oxidizing glucose. The method is characterized in that glucose is directly converted into arabinose and erythrose by using rutile TiO2 loaded with a metallic promoter as a photocatalyst by a photo-catalytic dehydrogenating and oxidizing way under room temperature. The prepared arabinose and erythrose prepared by the method have the yields respectively reaching more than 45mol% and 26mol%; the reaction conditions are mild; no acid, alkali and organic solvents are added; and high-temperature and high-pressure conditions are not needed.

The invention discloses a fruity soda water with zero heat. The fruity soda water with zero heat mainly comprises, by weight, 0.01-1 part of stevioside, 0.1-10 parts of erythrose alcohol, 0.5-0.8 part of sodium bicarbonate, 0.0005-0.001 part of calcium chloride, 0.0005-0.001 part of magnesium sulfate, 0.0005-0.003 part of sodium sulfate, 0.5-0.8 part of natural perfume, 0.01202-0.166 part of vitamin ingredient and purified water dissolved with carbon dioxide. The fruity soda water with zero heat has simple and easily available raw materials, good mouthfeel and no heat, is suitable for diabetes patient, the obese and the group needing less energy intake, and has good health care function. Materials used in the invention contain no heat, provide a product with diversified taste and supplement everyday vitamin loss in human body; addition of erythritol benefits functions of metabolism and toxin expelling and satisfies diversified mouthfeel demand and pursuit of people for health.

The invention relates to the technical field of cosmetics, and discloses a multi-effect repair lyophilized film. The multi-effect repair lyophilized film comprises, by weight, 9-20 parts of trehalose,20-25 parts of hyaluronic acid, 10-15 parts of erythrose, 10-15 parts of pullulan, 15-20 parts of sclerotium gum, 5-15 parts of tetrahydromethylpyrimidine carboxylic acid, 5-10 parts of asiaticosideand 5-10 parts of oligopeptide. The multi-effect repair lyophilized film has the advantages that the trehalose, the hyaluronic acid, the tetrahydromethylpyrimidine carboxylic acid, the asiaticoside and the oligopeptide easily penetrate a deep layer of skin after compounding, so that the skin can quickly absorb nutrients to improve cell activity and moisturizing effect; the hyaluronic acid, the tetrahydromethylpyrimidine carboxylic acid and the asiaticoside can effectively reduce small wrinkles, and accordingly, the skin is firm and smooth.

The invention relates to a preparation method of 4-phosphoric acid erythrose, comprising the following steps: immobilizing heat-resistant transketolase at the temperature of 55-65 DEG C; and then taking 6-fructose phosphate and 3-glyceraldehyde phosphate as raw materials to prepare the 4-phosphoric acid erythrose by enzymatic reaction. In the preparation method, the heat-resistant and specifically transformed transketolase of the 4-phosphoric acid erythrose is prepared by adopting a molecular biology technology, and the 6-fructose phosphate and the 3-glyceraldehyde phosphate are taken as the raw materials to efficiently prepare the 4-phosphoric acid erythrose by adopting an immobilized enzyme technology. The preparation method is simple and practical.

The invention discloses mallotus oblongifolius buccal tablets and a preparation method of the mallotus oblongifolius buccal tablets. The mallotus oblongifolius buccal tablets comprise the following components in parts by weight: 32-40 parts of a mallotus oblongifolius extract, 10-15 parts of a licorice extract, 4-6 parts of honey, 7-10 parts of starch, 2-3 parts of erythrose and 3-5 parts of magnesium stearate. As containing the mallotus oblongifolius extract, the licorice extract, the honey, the starch, the erythrose and the magnesium stearate, the mallotus oblongifolius buccal tablets have the healthcare functions of diminishing inflammation, resisting bacteria, clearing heat, relieving summer heat, resisting fatigue, improving the capability of scavenging free radicals of organism and the like, and are suitable for different groups of people to eat. In preparation, the mallotus oblongifolius extract is taken as a main raw material and is matched with the licorice extract and other materials with components for clearing away heat and toxic materials to prepare the buccal tablets, and the buccal tablets attach importance to natural property and are free of pigments and flavoring agent, good in palatability, convenient to use, unique in taste and obvious in tea aroma. The preparation method is simple and the scale production is easy to implement.

The invention discloses a low-calorie yogurt drink; every 100g low-calorie yogurt drink contains the components in the following weight: 10g to 80g of milk, 0.1g to 5g of stevia sugar, 3g to 10g of erythrose-alcohol, 0.1g to 1.0g of stabilizer, 0.2g to 0.7g of acidity regulator, 0.05g to 0.2g of natural spice, and pure water is added to 100g. Compared with the existing similar products, the low-calorie yogurt drink does not contain any calorie, sucrose is replaced by high-sweetness stevia sugar, the low-calorie yogurt drink is applicable to fat people and people who need to take less sugar, erythrose-alcohol is also added to facilitate the functions of metabolism and expulsion of toxin, simultaneously natural spice with various tastes is added, and the needs of people for health and the preference of the people for various taste are met.

The invention belongs to the technical field of biomass conversion and chiral synthesis and particularly relates to a method for preparing D-erythrose from biomass saccharides. According to the invention, the biomass saccharides are adopted as the raw materials, and under the aqueous phase condition and the alkaline environment, the raw materials are catalyzed to obtain the D-erythrose. The method is has the following characteristics: the type of the biomass saccharides is more, the initial concentration range of the biomass saccharides is wide, the heating manner is flexible, the basicity range of a catalyst is wide, and the single chirality of the catalyst is realized; the operation is simple and convenient, equipment is simple, energy is saved, the aftertreatment is convenient, and both the percent conversion and the selectivity are high. As the D-erythrose is regarded as one of important platform chemical compounds at present, a series of products with wide application ranges can be obtained through chiral conversion and achiral conversion, can serve as midbodies of fine chemical engineering and pharmacy, and has huge economical value and broad application prospects. Therefore, through the method for efficiently preparing a great amount of D-erythrose from the biomass saccharides, large-scale industrialized production is expected to realize.

The invention relates to a chemical preparation method of erythritol. In the method, the erythritol is prepared by a chemical method, oxydol and a catalyst are used to carry out catalytic oxidation on gluconate to generate erythrose, and the erythrose is hydrogenated to be reduced into the erythritol, wherein the catalyst is cobalt chloride, and the gluconate is sodium gluconate. The chemical preparation method comprises the following steps: (1) preparing a sodium gluconate solution; (2) carrying out catalytic oxidation on the sodium gluconate; (3) carrying out primary refinement; (4) hydrogenating; (5) carrying out secondary refinement; (6) evaporating; (7) crystallizing; and (8) centrifuging: separating crystallized massecuite with a centrifuge, and drying to obtain the crystallized erythritol. The invention shortens the production period, is beneficial to improving the working efficiency, reduces the energy consumption and production cost, and solves the problems that fermentation conditions are difficult to control, microbiological contamination can be possibly caused, the fermentation period is long and the like. Besides, the invention avoids the waste of the liquid material, enhances the controllability, improves the efficiency and productive capacity, reduces the impurities in the liquid material, improves the crystal yield and product quality, and greatly lowers the production cost.

There is provided the use as reducing agents of alpha-hydroxycarbonyl compounds capable of forming cyclic dimers. There is also provided corresponding methods of reducing reducible compounds, particularly reduction-activated prodrugs. Examples of the alpha-hydroxycarbonyl compounds used are dihydroxyacetone, glycolaldehyde, glyceraldehyde, erythrose, xylulose, erythrulose or 3-hydroxy-2-butanone.

The invention provides multi-flavor cola with zero heat, which overcomes the disadvantages of the conventional cola series beverages, does not contain any heat, has sweetness superior to that of the beverages in which sugar or other sweeting agents are added and is suitable for diabetics, obese patients and people needing to reduce energy intake to drink. The multi-flavor cola with zero heat comprises stevia sugar, erythrose, a natural perfume, a cola essence, an acidity acidifier and carbonated water serving as main raw materials, also comprises vitamin components and replenishes the vitamin of a human body lost every day. The beverage has the advantages of good mouthfeel, high safety, low production cost, convenience of carrying, high health value and the like.