China Wuhan Desheng Biochemical Technology Co., Ltd Company News

Hand-washing sanitizing gel is a daily chemical product that is often used in daily life. Because of the new crown epidemic, it has made it widely welcomed by the public. Carbomer 980, a very important raw material in the sanitizing gel, has also become more and more biochemical. Favored by reagent manufacturers. Carbomer is used in hand sanitizing gel. The main reason is its thickening, viscosity and permeability. Compared with hand sanitizer, most people prefer gel products. Carbomer can be used to change the solution. It is gel-like, which is more durable and easier to use than liquids. The concentration of carbomer is basically in the range of 0.2%-0.5%. Carbomer can make the liquid system have a special yield value and rheology. Only a very low concentration can make some insoluble additives (particles, oil droplets) Etc.) Achieve permanent suspension. Carbomer 980 powder It is precisely because of the strong levitation ability of carbomer that carbomer is widely used. In addition, carbomer can achieve a good transparency effect when used in hand washing and disinfection gel. After being neutralized and ionized by the carboxyl group, due to the mutual repulsion of negative charges, the molecular chain is dispersed and stretched, showing a greatly expanded state. It is sticky, and these characteristics undoubtedly make Carbomer one of the important raw materials for hand-washing disinfection. The most notable feature of the use of hand-washing disinfection gel is that it avoids repeated washing, does not need to be washed with water, and can effectively inhibit and remove bacteria from the hands. Especially in summer, the growth rate of bacteria increases, especially intestinal pathogens, pyogenic cocci, yeasts and other pathogens. The main bactericidal component of the hand-washing disinfection gel is ethanol. If it has antibacterial effect, there will be other antibacterial agents, and some use guanidine substances to inhibit bacteria. The content of antibacterial agents is generally a few tenths of a percent, up to 23%, and the national standard also has clear requirements for the content of various antibacterial agents. With the spread of the new crown epidemic at home and abroad, the supply of disinfection products is in short supply in a short period of time. Especially the disposable hand sanitizer used to sterilize hands when going out has been snatched wildly. Carbomer 980 is used as the free hand sanitizer. As one of the ingredients, many manufacturers have raised their prices. Some manufacturers cannot supply normally because of too many orders. However, as one of the newly developed manufacturers of carbomer products, Desheng can not only guarantee the normal supply of products, but also maintain the prices. Does not rise, is a true conscientious producer.

Carbomer is a copolymer of polyalkyl sucrose or polyalkyl pentaerythritol and acrylic acid cross-linked polymer. It can form a high-viscosity gel at a very low concentration (usually 0.2-1.0%) and is widely used Daily chemical, pharmaceutical and other industries. But it has a lot of models, even with similar names, can these different models be replaced with each other? The first thing you need to understand is the meaning of different models of carbomer, mainly based on the different materials used in polymerization and the degree of polymerization, so there are a variety of different specifications and models of carbomer. Commonly used in the market are carbomer 980, carbomer 940, carbomer U20, etc., and their thickening performance, emulsification performance, viscosity, shear resistance, etc. are different, so most cases cannot be replaced by each other of. Some characteristics of different carbomers are listed below: Carbomer Clear Gel Carbomer 940: It is characterized by good thickening performance, extremely short rheology, high viscosity, medium clarity, low ion resistance and high shear resistance, suitable for creams, lotions and gels. Carbomer 941: It is characterized by stable emulsification system, low viscosity, long rheology, high-definition clarity, medium ion resistance and low shear resistance. Even in ionic solutions, stable emulsions or high Transparent gel. Carbomer 980: The viscosity is higher than 940, the ion resistance is better than 940, the transparency is equivalent, and it is nourishing than 940 when used in skin care products. Carbomer U20: excellent dispersibility, high thickening performance, long rheology, good transparency, good suspending ability, stable emulsification system, and no stickiness. It can be used in creams or lotions instead of traditional carbomer 934 , Instead of Carbomer 940 or 980 for transparent gel. Judging from the characteristics of the respective models, different carbomers are not completely irreplaceable, but generally speaking, the carbomer model used in a product is fixed, but for newly developed products, it is still necessary to test multiple models of carbomer. Therefore, it chooses the best performance, and with the update of technology, the development of better performance carbomers will come out, which will replace some traditional carbomers. Desheng Technology has many years of R&D and production experience in Carbomer and other acrylate polymer materials manufacturers, and welcomes users to communicate!

Carbomer, also known as carbomer, is a polymer formed by chemical cross-linking of acrylic acid or acrylate and allyl ether, including polyacrylic acid (homopolymer) and long-chain alkanol acrylates Polymer (copolymer). Its molecular structure contains 52-68% acid groups, so it has a certain acidity, has hydrophilic properties, and can be dissolved in water, ethanol and glycerin. Carbomer has the functions of thickening, suspending, stabilizing the system, regulating the release of water and active substances, and has simple process and good stability. Therefore, it is a rheological modification widely used in personal care products, pharmaceuticals and other fields. Thickener. There are two main thickening mechanisms of carbomer, including neutralization thickening and hydrogen bond thickening. 1. Neutralization and thickening Because it contains a certain acid group, it needs to be alkaline neutralized during the application process. After being neutralized by alkali, the carboxyl group of the carbomer is ionized. Due to the mutual repulsion of negative charges, the curled molecular chain stretches into a greatly expanded state, which increases the original volume to about 1000 times. To the effect of thickening. Commonly used neutralizers are sodium hydroxide, potassium hydroxide, potassium bicarbonate, and triethanolamine (the pH is adjusted to about 7 to get a crystal clear gel), which is why carbomer is sensitive to ions. 2. Hydrogen bond thickening Carbomer molecules, as carboxyl donors, can combine with one or more hydroxyl groups to form hydrogen bonds and thicken. This reaction mechanism takes time. Commonly used hydroxyl donors are non-ionic surfactants, polyols and so on. In addition, the following points need to be paid attention to when using carbomer. Precautions: 1. All carbomer polymers have the ability of shear thinning, and the longer the shear time, the slower the viscosity recovery, and even the permanent loss of viscosity; 2. Carbopol polymer has poor tolerance to ions, and Carbopol 1342, which is in the transitional stage, is relatively high; 3. Ultraviolet radiation will cause loss of the viscosity of carbomer, and this loss is irreversible.

With the increasing demand for nucleic acid testing projects, Virus Transport Media’s procurement needs are also getting higher and higher. The ingredients of Virus Transport Media are: Hanks Liquid Foundation, Gentamicin, Fungal Antibiotics, BSA (V), Cryoprotectants , Biological buffers and amino acids, etc.   Virus Transport Media is suitable for the collection, preservation and transportation of common virus samples such as new coronavirus, influenza virus, hand, foot and mouth virus. Pharyngeal swabs, nasal swabs or tissue samples of specific parts can be collected, and the stored samples can be used for subsequent clinical experiments such as nucleic acid extraction or purification.     The collection method of Virus Transport Media: 1. Pharyngeal swab: Use two plastic rod swabs with polypropylene fiber heads to wipe both pharyngeal tonsils and back wall at the same time, immerse the swab heads in 3ml Virus Transport Media (also can use isotonic saline solution, tissue culture Discard the tail part of the tube with liquid or phosphate buffer solution), and screw the tube cap tightly.   2. Nasal swab: Gently insert a plastic rod swab with a polypropylene fiber head into the nasal palate in the nasal passage, stay for a while and then slowly turn it out. Take another plastic rod swab with polypropylene fiber head and collect the other nostril in the same way. The above two swabs were immersed in the same tube containing 30% of the sample liquid, the tail was discarded, and the tube cap was screwed tightly.   3. Nasopharyngeal aspiration or respiratory tract aspiration: Use a collector connected to a negative pressure pump to extract mucus from the nasopharynx or extract respiratory secretions from the trachea. Insert the head of the collector into the nasal cavity or trachea, turn on the negative pressure, rotate the head of the collector and slowly withdraw, collect the extracted mucus, and rinse the collector once with 3ml sampling solution (you can also use a pediatric catheter connected to a 50ml syringe Come up to replace the collector).   The cell preservation solution is a general-purpose cell cryopreservation solution, which can be used to freeze human and various animal cell lines; the complete cryopreservation solution formula is ready to use, convenient and fast; non-program cooling, -80℃ low temperature refrigerator freezing Store up to 5 years to ensure the safety of cryopreserved cells; cryopreservable plates (cell culture plates) can be used for cryopreservation of hybridoma cells. The cell preservation solution has a diluting effect and can be separated and embedded in mucus. The effective cells can be preserved, and provide sufficient cell numbers to ensure the accuracy of the test results. At the same time, the processed sample can be completely removed after the low-speed centrifugal filtration of the mucus in the sample, which is effective Prevent mucus from interfering with the sample test results. The cell preservation solution can be made into a uniform monolayer cell sheet after low-speed centrifugation, which meets the inspection requirements.   Apart from professionals, many people often confuse the cell preservation solution with Virus Transport Media, thinking that the two refer to the same preservation solution. In fact, the cell preservation solution is mainly used to freeze cells, and Virus Transport Media has There are two types of fire-extinguishing and non-extinguishing types. The fire-extinguishing type is mainly used for nucleic acid detection. For example, the more popular new coronavirus nucleic acid detection is the fire-extinguishing Virus Transport Media. The non-extinguishing type is mainly used for virus cultivation and reproduction. The biggest feature is that it can provide more accurate test results.

Carbomer is also known as acrylic resin, polyacrylic acid, carbomer resin, carbopol or carbopol. The appearance is white loose powder with a slight special smell. This product is very easy to absorb moisture, so it is placed in a ventilated The warehouse is protected from light and dry to ensure product quality. Carbomer 940 uses: short rheology, high viscosity, high clarity, low ion resistance and shear resistance, suitable for skin care lotions, creams, alcohol-containing transparent gel products, transparent skin care gels, hair Use styling gel, traveling wave, shower gel, recommended dosage: 0.2-1.0%. Carbo 940 has short rheological properties, and the viscosity reaches 63000MPA.S at 0.5%, which is suitable for products with high viscosity. Precautions for use of Carbomer 940: Long-term stirring or high-shear stirring after carbomer neutralization will cause viscosity loss;The presence of electrolyte will reduce the thickening efficiency of carbo resin;Long-term ultraviolet radiation will reduce the viscosity of carbomer. Finally, Carbomer is soluble in water, glycerol and ethanol, and has the characteristics of colloidal solution. The usual concentration is 0.1% ～ 3%. Because its molecular structure contains 52% ～ 68% acidic groups, it has certain acidity. The pH value of 1% water dispersions is 2.5 to 3, and the viscosity is relatively low. When neutralizing with alkali, the viscosity gradually increases with the gradual dissolution of macromolecules, forming a clear solution at low concentration, forming a semitransparent gel at a high concentration. The gel has the greatest viscosity and consistency at pH6 ~ 12, and the viscosity decreases when pH < 3 or pH > 12. Commonly used neutralizers include triethanolamine, ethylenediamine, laurylamine, sodium bicarbonate, sodium hydroxide, etc. generally, 1 g carbomer needs 1.35g triethanolamine or 400mg sodium hydroxide to neutralize. Strong electrolytes and sunlight can reduce the viscosity of the gel. The temperature also has some effect on the viscosity, but the relative change is not great. The gel is best preserved in the refrigerator.

Many things in life cannot be found with the naked eye, so many novel things begin to appear, and luminol becomes one of thousands of things. Luminol has a CAS number of 521-31-3. A blood that cannot be observed with the naked eye when detected at a crime scene, and can show a very small amount of blood (occult blood reaction). The chemical name is 5-amino-phthalic hydrazide. It is a blue crystal or pale yellow powder at room temperature, which is a relatively stable synthetic organic compound. The chemical formula is C8H7N3O2. In fact, the luminol reaction does not necessarily require blood, because blood is just a catalyst, and other methods can also make it glow. And because blood is only a catalyst, even if blood is used, it is extremely obvious that only trace amounts of blood are needed. Luminol is a strong acid, which has a certain irritating effect on the eyes, skin and respiratory tract. Since hemoglobin contains iron, iron can catalyze the decomposition of hydrogen peroxide, turning hydrogen peroxide into water and monooxygen, and monooxygen oxidizes luminol to make it glow. Therefore, luminol is widely used in criminal investigation, biological engineering, chemical tracing and other fields. In forensic medicine, luminol reaction can identify blood stains that have been scrubbed long ago. Biologically, luminol is used to detect the presence of copper, iron and cyanide in cells. Luminol/Luminol/Luminol is one of the most commonly used liquid-phase chemiluminescence reagents because of its simple structure, easy synthesis, good water solubility, and high luminescence quantum efficiency. Desheng has specialized in R&D and production of chemiluminescence reagents for 15 years, and has a professional R&D team. If you need luminol, you can directly contact , and look forward to your inquiries!

What is carbomer? In fact, many of us don't understand. If we are to analyze Carbomer from a professional perspective, it is estimated that many people may still have no way to understand it. After all, people who don't know him can't imagine it at all. But this is not the point. The point is that everyone only needs to understand where the efficacy and role of carbomer are reflected in our lives, and then put it to good use. Carbomer gel The efficacy and role of carbomer 1. Protect the skin Carbomer has an obvious protective effect on human skin. It has a certain affinity for human skin. People usually add it to cosmetics. It can integrate various ingredients in cosmetics and keep them stable. In the right state, and the cosmetics with carbomer will have a good base, and people will feel particularly comfortable after applying it on the skin. It can protect the skin, and can reduce the irritation and damage of irritating substances to human skin and skin mucous membranes, and can prevent a variety of allergic symptoms from occurring. 2. Anti-ultraviolet It can well resist the irritation caused by ultraviolet rays to the skin. Why is this? Because carbomer has a certain activity, after it is applied to the surface of human skin, it can enhance the resistance of human skin to ultraviolet rays and reduce the damage of ultraviolet rays to human skin. When used in summer, carbomer's sunscreen products will be added. Play a particularly ideal sunscreen effect, can prevent the skin from darkening and also prevent the skin from being burned by ultraviolet rays. 3. Reduce the viscosity Carbomer has a certain degree of porosity, and it is a slightly acidic substance with particularly strong hygroscopicity. Usually when making gels or cosmetics, you can add an appropriate amount of carbomer, which can reduce the viscosity of these substances. , You know, it is a very hygroscopic substance, so if it is added to cosmetics, it will make the cosmetics less viscous and maintain their stable properties. 4. Anti-inflammatory and sterilization Carbomer is also a natural medicinal ingredient. It can reduce inflammation and sterilization. The carbomer eye drops sold in the medical market are medicines made with it as the main raw material. It has a good effect on human eye inflammation. Effect, can make the patient's pain and eye redness and swelling disappear quickly. From the above, these are just some of the uses of carbomer in cosmetics, and it is not just used in cosmetics! If you have a need or are planning to use Carbomer to develop other products, you can contact us. Our Desheng company is a manufacturer specializing in the development and production of Carbomer.

In terms of application in various fields, the acridinium ester luminescence immunoassay technology is of great help. According to the experimental principle of the double antibody sandwich method, the acridinium ester chemiluminescence immunoassay technique combined with the biotin-avidin magnetic particle separation technology is established. A detection method for quantitative determination of carcinoembryonic antigen content in serum. Due to the application of acridine ester luminescence immunotechnology, the medical determination of carcinoembryonic antigen content in serum is more rapid and simple, so that carcinoembryonic antigen patients can be treated in time, which provides great convenience and makes a major step forward in medicine. step. Acridine Ester Product Picture It was first discovered that the phenomenon of chemiluminescence was found in organisms, such as fireflies, now called bioluminescence, which is named after the visible light emitted by organisms. Smart people will never give up after discovering this phenomenon. Later, after many experiments, it was found that the reaction of N,N-dimethyl diacridine nitrate and hydrogen peroxide can produce chemiluminescence. In many cases, the measurement of glucose is used as an example. It has been applied in the determination of reducing substances. Since then, the discovery of the chemiluminescence phenomenon of acridinium ester derivatives, the synthesis of chemiluminescence labeling reagents and the chemiluminescence immunoassay have become a popular research content in the 1980s, which promoted the application of this type of analysis method in the analysis of human body composition. Acridine-based chemiluminescence systems are widely used in the fields of inorganic and organic compounds, biological and pharmaceutical analysis due to the advantages of no catalyst, mild reaction conditions, and good reproducibility. Desheng is an established chemical reagent company specializing in the development and production of blood test reagents. Desheng acridinium ester has 6 products with different groups. In addition to acridinium ester, chemiluminescence reagents also include luminol and isoluminol. The luminous efficiency of the acridine ester series is relatively high and belongs to direct luminescence.

N,N-bis(hydroxyethyl)glycine, alias Bicine buffer, CAS number is 150-25-4, Bicine is a biological buffer; biological buffer is recommended for low-temperature biochemical work. Used to prepare a stable substrate solution for serum guaninase determination. It is also a very versatile Buffer, used for enzyme reaction buffer, electrophoresis buffer, working concentration from 3-100mM.Bicine is often used as a buffer solution for capillary electrophoresis. N, N-Dihydroxyethylglycine Bicine is a zwitterionic buffer, belonging to Good’s buffer, with a pH buffer range of 7.6-9.0. The molecular structure of Bicine is similar to that of glycine. The molecule has a substituted amino group, a carboxyl group and two hydroxyl groups as coordinating groups, so it has the properties of an amino acid and aminoethanol at the same time, and can form a metal complex with a single anion (Bic-) , Is often used as a buffer solution for capillary electrophoresis. Bicine is an effective inhibitor for the oxidative degradation of amines. According to the patent CN104245089A description, Bicine is an effective inhibitor for the oxidative degradation of amines, and can effectively inhibit the oxidative degradation of the amines used or the amine-containing absorbents used. Bicine is used as a chelating agent for soil remediation. Bicine is an amino acid analogue that is easily soluble in water. It is an environmentally friendly substance. It contains two -OH and one -COOH in its molecule. It has good chelating properties and can chelate heavy metal ions such as Cu, Cd, and Pb, but Can not chelate calcium and magnesium ions. Therefore, Bicine is often used as a chelating agent to repair soil contaminated by heavy metals. Bicine has a good elution ability for heavy metals under neutral and acidic conditions, and can efficiently remove Cu, Cd, and Pb ions in contaminated soil. Bicine is an eluent of active components, which can not only wash and repair heavy metals. It pollutes the soil, and can avoid the loss of plant nutrient elements calcium and magnesium in the soil, is safe and environmentally friendly, and will not cause secondary pollution to the environment. Bicine is also a widely used in vitro diagnostic reagent raw material, suitable for biochemistry and medicine. In the field of in vitro diagnostics, it is an important raw material for antibody detection reagents and nucleic acid detection reagents.

Before understanding Virus Transport Media, let’s first understand which viruses are made up of. Viruses are composed of a nucleic acid molecule and protein or only protein. Individuals are small and simple in structure. Common epidemic infectious diseases are usually RNA viruses, such as influenza virus, HIV, influenza A virus. Because there is no cell structure, the virus cannot replicate itself, but invades its genes into the host cell, using the latter's replication system to replicate new viruses. After the virus sample is collected, in order to maintain the viability of the virus sample and prolong the survival time of the virus in the sample, the sampling swab will be stored and transported in Virus Transport Media. Virus Transport Media has two types: inactivated and non-extinguishing. The inactivated Virus Transport Media uses high-concentration guanidine salt to quickly inactivate and preserve respiratory pathogens, making the sample lose infectivity. The inactivated samples can be used with a variety of viral DNA/RNA extraction kits. The M32/M96 nucleic acid extractor can quickly extract nucleic acids. At the same time, it can be used with the respiratory pathogen PCR detection kit to achieve rapid detection, and the specific sensitivity is not affected.     The non-inactivated Virus Transport Media contains Hanks liquid base, gentamicin, fungal antibiotics, BSA (V), cryoprotectant, biological buffer, and amino acids. A combination of multiple antibiotics has anti-bacterial and anti-fungal effects; Bovine Serum Albumin (BSA), as a protein stabilizer, can form a protective film on the protein shell of the virus, making it difficult to decompose and ensuring the integrity of the virus; Hanks The neutral environment constructed by the buffer helps increase the survival time of the virus and the stability of infection. The non-inactivated Virus Transport Media is usually used for the collection and transportation of clinical influenza, avian influenza (such as H7N9), hand-foot-mouth disease, measles and other virus specimens, as well as mycoplasma, ureaplasma, chlamydia and other specimens. The sudden new crown epidemic has caused serious impacts on many companies. As high schools and junior high school students in major regions resume school, the demand for new crown pneumonia nucleic acid testing is increasing. Virus Transport Media, as one of the indispensable products for nucleic acid testing, has been greatly affected. Major companies are concerned. Since the resumption of work and production, Desheng Technology has been committed to the research and development and production of Virus Transport Media, blood collection tube additives and other products. It has made considerable progress and its products have been well received at home and abroad!

Depending on the degree of crosslinking and molecular weight, Carbopol has a variety of products of different types, including traditional series such as Carbopol 910, 934, 934 P, 940, 941, and 954, as well as new polymers such as Carbopol Ultrez 20/21 . Different types of carbomers have different uses in various industries due to their suspension stability characteristics, fluidity change length and other properties. Let's take a look at the properties and applications of the most commonly used carbomers in cosmetics.·Traditional carbomerCarbopol 934 (benzene solvent homopolymer)Appearance: white loose powder, slightly odorPerformance: short rheology; medium and high viscosity; medium transparency, slightly yellow; low ion resistance; high shear resistance; suspension stability, high heat resistanceSafety: There may be residual solvents (benzene or xylene)Application: Suitable for high-viscosity gels, lotions and ointments; suspension and emulsification; topical application; skin care; hair care; taste masking agent; cream; hand, body and face lotion. It is widely used in medicine (ointment) formulations and cosmetic creams.·Carbopol 940 (benzene solvent homopolymer)Appearance: white loose powder, slightly odorPerformance: (jelly type) very short rheology; high viscosity; high transparency; low ion resistance; low shear resistance; high yield value (suspension ability)Solubility: soluble in water, glycerin and ethanol, etc.Safety: No mold will grow when dry, non-toxic and non-irritatingApplication: It can provide the stability of the oil-in-water emulsification system and is suitable for use in lotions and creams.Suggested dosage: 0.2% ~ 1.5% · Carbopol 941/971 (benzene solvent homopolymer)Appearance: white loose powder, slightly odorPerformance: (snot type) long rheology; low viscosity; high transparency; medium ion resistance; low shear resistanceSolubility: soluble in water, glycerin and ethanol, etc.Application: It can produce low-viscosity permanent emulsions and suspensions, even ionic systems, and the resulting colloids have good transparency (more effective at low concentrations). Carbo 941 is used as an oil-in-water emulsification system in the cosmetics industry. Stabilizer, 971 is used as a slow-release agent in the pharmaceutical industry, suitable for transparent gels, hydroalcoholic gels and emulsion products.·※Improved carbomer (no benzene)Carbopol 980 (co-solvent homopolymer)Chemical name: Cross-linked polyacrylic resinAppearance: white loose powder, slightly odorPerformance: very short rheology; high viscosity; high transparency; low ion resistance; low shear resistance; high yield value (suspension ability)Solubility: soluble in water, glycerin and ethanol, etc.Application: Suitable for thickening, suspending and emulsifying in cosmetics or pharmaceutical formulations. Such as: styling gel, hydroalcoholic gel, moisturizing gel, shower gel, toothpaste, shampoo, shaving gel, moisturizing cream and sunscreen lotion, etc.Dosage: 0.2% ~ 1.5%·Carbopol 1342 (hydrophobic modified copolymer)Chemical name: Cross-linked polyacrylic resinAppearance: white loose powderPerformance: long flow characteristics; medium viscosity; high transparency; high ion resistance; high shear resistance; high yield value (suspension capacity)Solubility: soluble in water, glycerin and ethanol, etc.Application: Excellent rheology modifier in the presence of electrolyte, polymerization and emulsification, suitable for aqueous solutions or dispersions containing water-soluble salts.·Carbopol ETD 2020Chemical name: Acrylate/C10-30 Alkyl Acrylate Cross-linked CopolymerAppearance: white loose powderPerformance: long rheology; medium viscosity; high transparency; high ion resistance; shear resistance; efficient thickening, strong suspension abilityApplication: Suitable for transparent gels, hydroalcoholic gels, surfactant systems (special shampoos, cleaning products, etc.), and systems with high electrolyte content (such as aloe gel), etc.Suggested dosage: 0.2% ~ 1.5%·Carbopol AQUA SF-1New liquid acrylic rheology modifierINCI name: acrylic (ester) copolymerAppearance: milky white to white liquidPerformance: long rheology; high viscosity; medium transparency (the body is opaque, after adding the product); low ion resistance; high shear resistanceSolubility: soluble in water, glycerin and ethanol, etc.Application: It can be formulated into a clear formula, has excellent compatibility with a variety of ingredients, acidified and thickened, and can be used in surfactant systems.·Carbopol Ultrez 20 (new easily dispersible copolymer)Chemical name: Acrylate/C10-30 Alkyl Acrylate Cross-linked CopolymerAppearance: white loose powderPerformance: long rheology; high transparency; medium viscosity; medium ion resistance; high shear resistance; easy to disperse, excellent and stable suspension abilityApplication: It can be used in shampoos, shower gels, creams, lotions, and hydrogels with high electrolyte content. In addition, U20 can also give the product a bright appearance, with better fluidity and pourability, providing the product with a smooth, light, and soft touch.·Carbopol Ultrez 21 (new easily dispersible copolymer)Chemical name: Acrylate/C10-30 Alkyl Acrylate Cross-linked CopolymerAppearance: white loose powderPerformance: short rheology; high viscosity; high transparency; low ion resistance; shear resistance; easy to disperse, self-wetting, high-efficiency thickening, strong suspension ability, can give the formula a constant viscosity.Application: It can be used for gel, washing and cleaning products, high electrolyte products, etc.·Pemulen TR-1 (hydrophobic modified copolymer)Chemical name: Acrylate/C10-30 Alkyl Acrylate Cross-linked CopolymerAppearance: white powderPerformance: short rheologyApplication: Multifunctional thickening emulsifier, used as a stabilizer in oil-in-water systems, and can be used in creams and lotions.Suggested dosage: 0.2% ~ 0.4% to achieve 20.0% oil content.·Pemulen TR-2 (hydrophobic modified copolymer)Chemicals: acrylate/C10-30 alkyl acrylate cross-linked copolymerAppearance: white powderPerformance: long rheologyApplication: Multifunctional thickening emulsifier, used as a stabilizer in oil-in-water systems, and can be used in emulsions.Suggested dosage: 0.15% ~ 0.30% to achieve 60.0% oil content.

Desheng company is established for 20 years, focusing on R & D, production and sales in one of the old company, R & D and production of a complete range of products, price concessions, now on our company's R & D and production experience α- Glucosidase is a simple explanation. Glucosidase is one of the major enzymes in glycoside hydrolases (EC 3.2.1). It is named because it can hydrolyze glucoside bond and release a molecule of glucose. Glucosidase is one of the important members of glucose metabolism pathway. β- Glucosidase is involved in the metabolism of cellulose and many physiological and biochemical pathways, α- Glucosidase is directly involved in the metabolism of starch and glycogen. It has double functions of hydrolysis and transglycoside in the catalytic reaction of sugar. Hydrolysis can be carried out from α- Non reducing telostomy of glucosides, oligosaccharides and glucans α- 1,4 glycosidic bond, releasing glucose; In addition, the free glucose residues can be separated by transglycosylation α- Non fermentative Isomaltooligosaccharides (IMO) were obtained by transferring 1,6 glycosidic bond to another glucose or maltose substrate. The abnormal function of these enzymes will lead to metabolic diseases. At the same time, these enzymes are also the targets of many drugs and inhibitors to regulate the glycochemical metabolism in the human body. α- Glucosidase can be used to screen active natural drugs; one α- Immobilization of glucosidase: using trimethylol phosphorus as crosslinking agent and chitosan as carrier α- Glucosidase; 2. Make inhibitor screening model: immobilize the above-mentioned inhibitors α- The glucosidase was loaded into a column with a diameter of 0.8 cm and a length of 8 cm, in which the pH 6.8 potassium phosphate buffer was added and stored at 4 ℃; 3. Validation of the model: a representative α- Acarbose, a glucosidase inhibitor, was used to verify the effectiveness of the screening model. The lower end of the column was tightly inserted into a small tube with a piston, and a syringe was inserted into the upper end. The buffer solution in the column was pressed to about 0.4cm below the top of the column, and then 50 μ L 4-nitrobenzene- α- D-glucopyranoside (0.116mol / L) and a certain amount of acarbose solution (250mg / L), gently shake to make the solution at the top of the column mix well, then continue to press the solution until the liquid level is level with the top of the column, close the bottom piston, then put the column into the water solution tank, incubate at 37 ℃ for 10 minutes, after the reaction is completed, use 5ml Wash the column with ph6.8 potassium phosphate buffer, collect the washing solution, dilute the eluent to 10ml volume, and determine the absorbance value at 400nm with ultraviolet spectrophotometer; And the above 50 μ L 4-nitrobenzene- α- D-glucopyranoside, acarbose solution and 5ml buffer solution were diluted to 10ml as blank, and the inhibition rate of acarbose was calculated according to the absorbance data of the obtained reaction solution; 4. Immobilization α- Screening model of glucosidase for water soluble fraction of traditional Chinese medicine Polygonum cuspidatum α- Objective to screen the water-soluble fraction of Polygonum cuspidatum. We Desheng R & D and production of enzyme preparations used in the kit, customers with relevant needs are welcome to consult.