35 results about "Mucic acid" patented technology

The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with mucic acid, 3,5-dihydroxybenzoic acid, and 2,3-dihydroxybenzoic acid, and crystalline polymorphic forms of nicotine 4-acetamidobenzoate, nicotine gentisate, and nicotine 1-hydroxy-2-naphthoate are described. The invention further provides methods of preparation and characterization of such nicotine salts, co-crystals, and salt co-crystals and polymorphic forms thereof. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and / or salt co-crystals are also provided.

Disclosed are novel protective compositions for dermal papilla cells. In an embodiment the protective compositions of the present invention comprise 0.25% w / w or above of compositions comprising at least 10% w / w and above of 1-O-galloyl-β-D-glucose (β-glucogallin). In an embodiment, the said protective composition additionally comprises 50% to greater than 50% gallates including mucic acid 1,4-lactone 5-O-gallate, mucic acid 2-O-gallate, mucic acid 6-Methyl ester 2-O-gallate, mucic acid 1-Methyl ester 2-O-gallate and ellagic acid. In another embodiment the invention also encompasses synergistic protective compositions comprising the said protective compositions and 0.5% concentrate of liquid endosperm of Cocos nucifera, for dermal papilla directed towards helping the dermal papilla cells to form sufficient numbers and to retain a healthy morphology conducive for hair growth.

The invention relates to an aldehyde-free acidification corrosion inhibitor suitable for good solubility in acid liquid, high temperature resistance and high cost performance and a preparation method. The mass percent of each component of the corrosion inhibitor is: 20-50% of acetylenic alcohol ether containing benzene ring; 3-5% of non-ionic surfactant; 40-70% of low-molecular alcohol solvent; 0.5-1.0% of potassium iodide; Wherein, the acetylenic alcohol ether containing a benzene ring has the following general structural formula: wherein R is a group containing a benzene ring. The specific steps are: first react propynyl alcohol with an inorganic base to form a salt, then react with a benzene ring-containing chloride to form an ether, and then compound and dilute with a nonionic surfactant, potassium iodide, and a low-molecular alcohol solvent to obtain an acidifying corrosion inhibitor . The acidification corrosion inhibitor provided by the invention has a simple synthesis method, good high-temperature corrosion inhibition performance, mild reaction conditions, does not contain formaldehyde, can be applied to acid liquid systems such as gelling acid and viscous acid, has good compatibility, and has wider Suitability for acid systems.

The present invention relates to a method and microbial host strain for converting a hexuronic acid to a hexaric acid. In particular, the invention relates to the conversion of D-galacturonic acid to meso-galactaric acid (mucic acid). The invention also concerns an isolated nucleotide sequence. According to the present method a microbial host strain genetically modified to express uronate dehydrogenase enzyme (EC 1.1.1.203) is contacted with a biomaterial comprising hexuronic acid and the conversion products are recovered. By using the recombinant microorganisms of the present invention it is possible to treat biomaterials comprising hexuronic acids and thereby decrease the amount of hexuronic acids released to the environment.

The invention relates to an acid fracturing method of a temperature-control and variable-viscosity acid in the exploitation of an oil-gas well, which comprises the steps that: a common chlorohydric acid pickling process is firstly used for removing the pollution of an embrasure; then, the temperature-control and variable-viscosity acid fracturing process, or an ahead-fluid temperature-control andvariable-viscosity acid fracturing process, or a temperature-control and variable-viscosity acid fracturing enclosed acidizing process, or an ahead-fluid temperature-control and variable-viscosity acid fracturing enclosed acidizing process is adopted; the weight ratio of the components of the temperature-control and variable-viscosity acid are as follows: 100 portions of basic acid solution, 0.5 portion to 1.5 portions of the main agent of the temperature-control and variable-viscosity acid, 1 portion to 3 portions of a corrosion inhibitor of the temperature-control and variable-viscosity acid, 0.5 portion to 1 portion of an emulsion breaker, 0.5 portion to 1 portion of a ferric ion stabilizer and 0.5 portion to 1 portion of a high efficient discharge aiding agent; 2-percent KCL clear water is used for displacing the temperature-control and variable-viscosity acid into the stratum. The temperature-control and variable-viscosity acid is easily prepared on site, with low friction drag and strong pumpability, thereby being capable of being applied to high-discharge construction; under the high temperature condition of a storing layer, both the fresh acid and the residue acid have high viscosity, thus increasing the length of acid-etching cracks. After the construction is finished, the viscosity of the residue acid is reduced, which is beneficial to the back discharge of the residue acid.

Mucic acid salts of a compound represented by the following structural formula:are disclosed. In particular, single crystalline mucic acid salts of the compound represented by structural formula (I) are characterized by a variety of properties and physical measurements. Methods of producing the mucic acid salts, using the salts to antagonize one or more aspartic proteases, and methods of treating a number of aspartic protease mediated disorders using the salts are described herein.

The invention discloses an acid pressure simulation method considering the dynamic process of mucovisic acid. The relationship between the viscosity of mucovisic acid and shear rate, temperature, calcium ion concentration, pH value and surfactant concentration is respectively measured, and a mucoviscic constitutive equation is established. ; Simulate the flow and reaction process of viscous acid in the fracture system, and obtain the pressure profile in the fracture system; take the pressure profile in the fracture system as the inner boundary condition, and the ground pressure as the outer boundary condition, simulate the calculation of the variation of viscous acid in the matrix the reaction process; simulate the viscosity change of the acid solution in the matrix system, and calculate the fluid loss velocity; bring the obtained fluid loss velocity into the pressure profile of the fracture system in the step. The invention is used to solve the problem that the acid pressure simulation technology in the prior art does not consider the dynamic filtration process of mucoacid, resulting in a low coincidence rate between the simulated seam length of the mucoacid acid pressure and the actual situation, and realizes that the simulation can be obtained considering the viscous acid. The purpose of acid fracturing fracture morphology after acid dynamic drop rate.

A composition for providing or maintaining a healthy skin microbiota and methods of providing or maintaining a healthy skin microbiota are disclosed. The composition can be a prebiotic composition that can include a carrier and a skin microbiota balancing agent. In some aspects, the skin microbiota balancing agent can include at least one combination of carbohydrate sources including a first carbohydrate source and a second carbohydrate source. The skin microbiota balancing agent can be configured to provide at least two of the following desired ratios: a first desired ratio of Corynebaderiumto Staphylococcus of 1.3, a second desired ratio of Corynebaderium to Micrococcus of 1.4, and a third desired ratio of Staphylococcus to Micrococcus of 1.1. The carbohydrate sources may be D-alanine,D-threonine, L-alanyl-glycine, succinic acid, alpha-keto-glutaric acid, m-tantaric acid, bromo succinic acid, mucic acid, phenylethyl-amine, inulin, oxalic acid, pectin, Tween 40 etc.