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44 results about "Aldose" patented technology
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An aldose is a monosaccharide (a simple sugar) with a carbon backbone chain with a carbonyl group on the endmost carbon atom, making it an aldehyde, and hydroxyl groups connected to all the other carbon atoms. Aldoses can be distinguished from ketoses, which have the carbonyl group away from the end of the molecule, and are therefore ketones.
Production of glycolaldehyde by hydrous thermolysis of sugars
ActiveUS7094932B2Increase productionMinimize formationOrganic compound preparationConfectioneryGlucose polymersD-Glucose
The present invention provides a method for the production of glycolaldehyde with high specificity. The hydrous thermolysis consists of the spraying of aqueous sugar solutions containing from 25 to 80% of water but preferably 30 to 60% water, as a fine mist into a reactor held at the between 500 and 600° C., but preferably between 520 and 560° C. and the condensation of the resulting vaporous product in a surface condenser with optional heat recovery. The residence time of the vaporous product in the reactor should be in the range 0.1–5 seconds, but preferably in the range 0.5 to 2 seconds. Aldose monomeric sugars, preferably glucose (also known as dextrose), are preferred for use in the aqueous solution. The yield of glycolaldehyde in the condensed liquid is minimum 50% by weight of the sugar fed for glucose solutions.
Owner:KERRY GRP SERVICES INT
Process and catalyst for the preparation of aldonic acids
InactiveUS20070027341A1Organic compound preparationCatalyst activation/preparationPlatinumGluconic acid
This invention relates to a process for the preparation of aldonic acids (in particular gluconic acid) by oxidation of aldoses with oxygen or with a gas containing oxygen, in the presence of supported bimetallic catalysts based on gold and platinum.
Owner:UNIV DELGI STUDI DI MILANO
Cyanoacrylate Adhesive Compositions and Devices and Process for Sterilization Thereof
The viscosity of 2-cyanoacrylate monomer based adhesives is increased by combining the monomers with suitable thickeners according to a certain process. The resulting formulations may be heat sterilized without degrading the viscosity or causing premature polymerization. The effectiveness of the sterilization process is assayed by disposing bacterial spores in the formulation, exposing it to a dry heat sterilization process, transferring it to a sterile aldose solution, transferring and exposing the sample to a nutrient medium which supports germination and growth of viable spores, incubating the samples, and determining the presence or absence of growth.
Owner:CLAST TRADING
Isomerisation of c4-c6 aldoses with zeolites
InactiveUS20150232498A1Improve catalytic performanceImprove the level ofSugar derivativesSugar derivatives preparationIsomerizationKetone
The present invention relates to isomerization of C4-C6 aldoses to their corresponding C4-C6 ketoses. In particular, the invention concerns isomerization of C4-C6 aldoses over solid zeolite catalysts free of any metals other than aluminum, in the presence of suitable solvent(s) at suitable elevated temperatures. C6 and C5 aldose sugars such as glucose and xylose, which are available in large amounts from biomass precursors, are isomerized to fructose and xylulose respectively, in a one or two-step process over inexpensive commercially available zeolite catalysts, containing aluminum as the only metal in the catalyst. The ketoses obtained are used as sweeteners in the food and / or brewery industry, or treated to obtain downstream platform chemicals such as lactic acid, HMF, levulinic acid, furfural, MMHB, and the like.
Owner:DANMARKS TEKNISKE UNIV
Method for producing 5-hydroxymethyl-2-furfural or alkyl ether derivatives thereof using an ion exchange resin in the presence of an organic solvent
ActiveUS20140235881A1Easy to separateEasy to purifySugar derivativesSugar derivatives preparationHigh concentrationFuran
The present invention relates to a method for producing a furan-based compound using an ion exchange resin in the presence of an organic solvent. In the method for producing a furan-based compound according to the present invention, a furan-based compound is made from an aldose-type hexose compound in the presence of an organic solvent by using an anion exchange resin and a cation exchange resin. Thus, the aldose-type hexose compound obtained from biomass by simultaneously or consecutively using the anion / cation exchange resins as catalysts can be made into 5-hydroxymethyl-2-furfural (HMF) or alkyl ether derivatives thereof such as 5-alkoxymethyl-2-furfural (AMF) without using an expensive reagent. Also, since the selection of an organic solvent is not limitative and a heterogeneous catalyst can be used, separation and purification is easy and chemically stable AMF can be directly obtained. Further, the conversion efficiency of the aldose-type hexose compound is excellent, and the hexose compound can be used at a high concentration.
Owner:KOREA INST OF IND TECH
Method for preparing activated carbon from rice husks
The invention belongs to the field of preparation of activated carbon, and particularly relates to a method for preparing activated carbon from rice husks. According to the method, zinc chloride is used as an activator to treat substances, dissolved in zinc chloride, in raw material rice husks, saccharides such as glucose and the like are gradually decomposed and then further oxidized into uronic acid, uronic acid and aldose are condensed to form furfural, the furfural further has a polycyclic aromatization reaction to form condensed carbon, finally, an activated carbon structure is formed, the activated carbon structure is loose, the porous structure is more stable, and the specific surface area is larger. Alkali dissolution is performed with a sodium hydroxide solution, silicon dioxide in the rice husks is removed, and the porosity and activity of carbon are further increased. The more expensive zinc chloride can be recycled in the production process, raw materials are easy to obtain, the preparation process is pollution-free, and the product is low in impurity content, good in looseness, large in specific surface area and high in adsorption capacity.
Owner:杨淑珍
Process for the continuous production of ethylene glycol from carbohydrates
Owner:TECH PRECESS TECH INC
Process for producing carbon-diminished aldose compound
InactiveCN101090907AHigh industrial applicabilityImprove operational efficiencyOrganic compound preparationMonosaccharidesAtypical hyperphenylalaninemiaCompound a
A process by which 5-deoxy-L-arabinose, which is important as a material for the production of saproterin, a useful therapeutic agent for atypical hyperphenylalaninemia, can be industrially and efficiently produced even with a simple production apparatus. The process for 5-deoxy-L-arabinose production is characterized by reacting L-rhamnose with a C11-16 linear alkyl mercaptan compound in the presence of an acid catalyst to yield an L-rhamnose di(alkyl mercaptal), subsequently subjecting the resultant compound to an oxidation reaction to obtain a sulfonyl derivative, and then subjecting it to a carbon diminution reaction. This production process is applicable to a process for the production of a compound formed by removing one carbon atom from another aldol compound. Thus, the process is one for producing carbon-diminished compounds of general aldoses.
Owner:ASUBIO PHARMA
Method for producing 5- hydroxymethyl-2- furfural or alkyl ether derivatives thereof using an ion exchange resin in the presence of an organic solvent
ActiveCN103842349AImprove conversion rateEasy to separateSugar derivativesSugar derivatives preparationHigh concentrationFuran
Owner:KOREA INST OF IND TECH
Synthetic method of saponin
InactiveCN104693266AEasy to operateStrategies are simpleSugar derivativesGlycoside steroidsPtru catalystOrganic synthesis
The invention belongs to the field of organic synthesis, and involves a synthesis method of saponin, and in particular a method to construct glycosidic bond in saponin. The method includes the following steps: directly reacting an excessive amount of aldose or ketose with aglycone in an appropriate organic solvent under the action of an acid catalyst and reflux temperature of 30 DEG C to obtain the target product of saponin.
Owner:YANGZHOU BLUE BIOMEDICAL TECH CO LTD
Method of α-selective glycosylation
An α-selective glycosylation process of a glycosylation reaction between a sugar structure of hexose or an aldose having a chain with six or more carbon atoms in the molecule, which is a monosaccharide or a reducing end of an oligosaccharide with two or more monosaccharide residues connected by glycosidic linkages (an oligosaccharide with two monosaccharide residues is disaccharide) (also referred to as “a disaccharide to an oligosaccharide”) or a sugar chain and alcoholic hydroxyl group or thiol group, to obtain a sugar structure glycoside containing α-glycoside at a high ratio, under the ring-shaped formation of a protective group in a silyl acetal structure over hydroxyl groups at positions 4 and 6 in the sugar structure.By the process, highly selective α-glycosylation of sugar structure can be progressed in a simple and efficient manner.
Owner:JAPAN SCI & TECH CORP
Aminoketose organic steel bar corrosion inhibitor and preparation method thereof
InactiveCN106366139AThe synthesis method is simpleNo stringent conditionsSaccharide with heterocyclic radicalsSugar derivativesCarboxylic acidSteel bar
The invention discloses an aminoketose organic steel bar corrosion inhibitor. The aminoketose organic steel bar corrosion inhibitor is prepared by carrying out Amadori rearrangement reaction on aldoses and amines. The aldoses comprise glucose, galactose and mannitose, and have the advantages of wide sources and environment friendliness; and the amines are disclosed in the specification, wherein R1 and R2 are independently selected from C1-C15 straight-chain, branched-chain, cyclic alkyl, aralkyl, aryl, alkenyl, ether alkyl, amino alkyl, alkyl alcohol, alkylamine, alkyl carboxylic acid or hydrogen atom; R1 and R2 can form a ring; and R1 and R2 can not be the hydrogen atom at the same time. The synthesis technique is simple. The prepared corrosion inhibitor has the characteristics of high corrosion inhibition efficiency and environment friendliness, and has obvious application value and broad market prospects.
Owner:JIANGSU SOBUTE NEW MATERIALS
Heat-resistant mannose isomerase, process for producing the same and process for producing mannose by using the same
A thermostable mannose isomerase generated from a bacterium belonging to the genus Agrobacterium, excellent in thermostability, capable of being continuously used at a temperature of 55° C. to 60° C. for a prolonged period of time, and has, for example, the following enzymatic properties: (a) function: converts D-mannose to D-fructose and vice versa; (b) substrate specificity: isomerizes the aldoses D-mannose and D-lyxose to their corresponding kitoses, but does not interact with D-glucose, D-galactose, L-mannose, D-xylose, L-xylose, D-arabinose, L-arabinose or D-ribose; (c) optimum pH: 7.5 to 8.5; (d) optimum temperature: 55° C. to 60° C.; and (e) stable pH: 6.0 to 10.0, is provided.
Owner:JAPAN SCI & TECH CORP
Biosynthesis method of 2-deoxy scarce aldose by using aldolase
ActiveCN104017795ALow costNo generationBacteriaMicroorganism based processesEscherichia coliEnzyme biosynthesis
The invention relates to a biosynthesis method of 2-deoxy scarce aldose such as 2-deoxy-D-ribose aldolase by using aldolase, and discloses protein sequences of two 2-deoxy-D-ribose 5-phosphate aldolase mutants, and a constructed Escherichia coli recombinant bacterial strain L1 containing encoding genes of the 2-deoxy-D-ribose 5-phosphate aldolase mutants. Experiments show that the recombinant strain can catalyze reaction of acetaldehyde and a variety of aldehyde groups to produce 2-deoxy aldose by using resting cells, and has strong substrate tolerance. For example, recombinant strain can synthesize 2-deoxy-D-ribose by using aldehyde and D-glyceraldehyde as substrates, synthesize 2-deoxy-L-ribose by using acetaldehyde and L-glyceraldehyde as substrates, and synthesize 2-deoxy-D-altrose by using acetaldehyde and D-erythrose as substrates. Therefore, the Escherichia coli recombinant bacterial strain L1 provided by the invention can be applied to the production of deoxidation deoxy scarce aldose, and the obtained deoxy aldose has wide application prospect in the industries of food and medicine.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
Biodegrading agent, biodegradable fiber and their preparation methods
ActiveCN110644066ARaw materials are easy to getReasonable designMonocomponent polyesters artificial filamentArtifical filament manufactureFiberFibril
The embodiment of the invention provides a biodegrading agent, a biodegradable fiber and their preparation methods. Materials for the biodegrading agent provided by the embodiment of the invention areeasy to obtain, the design is reasonable, the effect of PBST (phosphate buffered solution with tween 20) is to provide toughening modification, polylactic acid is a carrier to monosaccharides and aldoses, the function of the monosaccharides and aldoses is to attract bacteria and provide energy for bacteria, the biodegrading agent is simple to prepare and is easy to use, the biodegradation of thefiber can be accelerated just by adding the biodegrading agent without changing production line equipment of fibrils, no adverse effect is caused on fibrils, and the degradation rate of the fiber in the soil can be controlled just by changing the addition amount of the biodegrading agent as required. According to the biodegradable fiber provided by the embodiment of the invention, the preparationprocess is not complex, the existing fiber production line equipment does not need to be changed, and the problem that traditional PET and PBT fibers cannot be degraded due to the benzene ring structure in the molecular chains is solved.
Owner:ZHONGSHAN SHANGYANG PRECISION IND
Method for quantification of total phosphorous
InactiveCN102472734AQuantitative securityColor safeAnalysis using chemical indicatorsMaterial analysis by observing effect on chemical indicatorPhosphate ionAlcohol sugars
The purpose is to quantify the total phosphorous in water of interest safely and within a short time. Provided is a method for quantifying the total phosphorus in water of interest by decomposing phosphorous compounds contained in the water to convert the phosphorous compounds into phosphate ions and determining the quantity of the phosphate ions in the water, wherein an alkali metal salt of peroxydisulfuric acid and sulfuric acid are added to the water and the resulting mixture is heated at a temperature ranging from 65 DEG C to a boiling point for a predetermined period. Subsequently, a color-developing agent comprising at least one hydroxy-group-containing compound selected from a group of hydroxy-group-containing compounds consisting of hydroxycarboxylic acids and alditols, a saccharide compound selected from a group of saccharide compounds consisting of aldoses having 5 carbon atoms, aldoses having 6 carbon atoms, ketoses having 6 carbon atoms and monosaccharide-generating compounds capable of being decomposed to generate any one of the aforementioned monosaccharides and hexaammonium heptamolybdate is added to the water, the resulting mixture is heated at 65 DEG C or higher for a predetermined period, and the absorbance of any wavelength ranging from 600 to 950 nm in the water is measured.
Owner:MIURA COMPANY LIMITED
Phytospingosine derivative and composition containing same
ActiveCN107567457AImprove stabilityImprove solubilityAntibacterial agentsOrganic active ingredientsSolubilityLactose
The present invention relates to a phytospingosine derivative generated by a condensation reaction of phytospingosine and maltose or lactose, which is an aldose-based disaccharide, and to a composition containing the same. The phytospingosine derivative of the present invention has high solubility in water compared with phytospingosine, is easy to formulate since the stabilization problem in a solution is solved, and maintains or further enhances the antibacterial effect of phytospingosine.
Owner:AMOREPACIFIC CORP
Method of alpha-selective glycosylation
InactiveUS20060122379A1Strong neighboring group participationHigh selectivityEsterified saccharide compoundsSugar derivativesSilyleneOligosaccharide
an α-selective glycosylation process of a glycosylation reaction between a sugar structure of hexose or an aldose having a chain with six or more carbon atoms in the molecuse, which is a monosaccharide or a reducing end of an oligosaccharide with two or more monosaccharide residues connected by glycosidic linkages (an oligosaccharide with two monosaccharide residues is disaccharide) (also referred to as “a disaccharide to an oligosaccharide”) or a sugar chain and alcoholic hydroxyl group of thiol group, to obtain a sugar structure glycoside containing α-glycoside at a high ratio, under the ring-shaped formation of a protective group in a silyl acetal structure over hydroxyl groups at positions 4 and 6 in the sugar structure. By the process, highly selective α-glycosylation of sugar structure can be progressed in a simple and efficient manner.
Owner:JAPAN SCI & TECH CORP
A kind of acid-catalyzed method for preparing saponin by directly reacting aldose or ketose with aglycon
ActiveCN105263945BEasy to operateStrategies are simpleSugar derivativesGlycoside steroidsOrganic solventOrganic synthesis
The present invention belongs to the field of organic synthesis, relates to a method for synthesizing a saponin, and in particular, to a method for constructing a glycosidic bond in a saponin, and comprises the following steps: directly reacting an excessive amount of aldose or ketose with aglycone in a suitable organic solvent at 30 °C to a reflux temperature and with the presence of an acid catalyst, to obtain a target product saponin.
Owner:于跃
Recombinant bacterium for fermentation production of purine nucleoside as well as construction method and application thereof
PendingCN113583929AProof of utilityFavorable Retrofit StrategiesBacteriaTransferasesGlucose dehydrogenase activityInosine
The invention discloses a recombinant bacterium for producing purine nucleoside through fermentation as well as a construction method and application thereof. The invention relates to the field of microbial fermentation, in particular to recombinant bacteria for producing purine nucleoside as well as a construction method and application thereof. Compared with an original strain, the recombinant strain for producing purine nucleoside has a mutated purine operon regulation region, inactivated aldose transferase, enhanced 6-phosphate glucose dehydrogenase activity and weakened 6-phosphate glucose isomerase. The inosine yield of the recombinant bacteria provided by the invention is obviously improved. The invention develops a novel method for improving the fermentation yield of purine nucleoside, so that the method can be used for producing inosine, guanosine and adenosine by bacterial fermentation in practice.
Owner:INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
Method for producing 5-hydroxymethyl-2-furfural or alkyl ether derivatives thereof using an ion exchange resin in the presence of an organic solvent
ActiveUS9206147B2Effective compoundImprove conversion efficiencySugar derivativesSugar derivatives preparationHigh concentrationFuran
Owner:KOREA INST OF IND TECH
Thermostable L-ribose isomerase and method for producing same and use of same
Object: To provide a thermostable L-ribose isomerase.Means for Resolution: The thermostable L-ribose isomerase with MW. 32,000 (by SDS-PAGE), optimal temperature of 45° C., optimal pH of pH 9.0 (glycine-NaOH buffer), and stable physicochemical properties such as temperature stability up to 45° C. during thermal treatment at pH 9.0 for 10 minutes, and with an action to isomerize L-ribose to generate L-ribulose or of inversely to isomerize L-ribulose to generate L-ribose. A conversion method between an aldose and a ketose comprising allowing the thermostable L-ribose isomerase as an enzyme derived from (1) Raoultella ornithinolytica strain MB426 (NITE BP-277) to interact with an aldose selected from L-ribose, D-lyxose, D-tallose, D-mannose, L-allose and L-gulose to isomerize the aldose to generate a ketose selected from the individually corresponding L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose or to interact with a ketose selected from L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose to isomerize the ketose to generate an aldose selected from the individually corresponding L-ribose, D-lyxose, D-tallose, D-mannose, L-allose and L-gulose.
Owner:KAGAWA UNIVERSITY +1
Method for preparing 5-hydroxymethylfurfural by taking galactose as base material
The invention relates to a method for preparing 5-hydroxymethylfurfural with high efficiency, the method takes galactose or a galactose-based carbohydrate as base materials, according to special performance of the galactose aldose, a compound 5-HMF is produced by a two-step method, the method is characterized in that galactose is isomated to tagatose under alkaline environment; and 5-HMF can be degraded by talgatose under high temperature by employing acid catalysis. The test confirms that the conversion rate of 5-HMF in the method is high, the method is easy and simple to operate, energy consumption is little, cost is low, and the method has good application prospect.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Use of sphingolipids in the treatment of type 2 diabetes mellitus, insulin resistance and metabolic syndrome
InactiveUS20110003772A1Avoid it happening againEnhanced levelBiocideMetabolism disorderSphingolipid metabolismAmino acid
The present invention relates to the use of sphingolipids for the preparation of a food item, a food supplement and / or a medicament for the treatment of insulin resistance, diabetes mellitus type 2 and / or metabolic syndrome. In particular, the invention relates to the use of a sphingolipid with the general formula (I):whereinZ is R3 or —CH(OH)—R3;A is sulphate, sulphonate, phosphate, phosphonate or —C(O)O—;R1 is H, hydroxyl, alditol, aldose, an alcohol, C1-C6 alkyl or amino acid;R2 is H or unsaturated or saturated (C1-C30) alkyl chain;R3 is unsaturated or saturated (C1-C30) alkyl chain;Q1 is a primary amine group (—NH2), secondary amine group (—NH—) or an amide group (—NH—CO—); andt is 0 or 1, or a precursor, a derivative or a pharmaceutically acceptable salt thereof, for the manufacture of a medicament for the prevention and / or treatment of a disorder selected from the group consisting of insulin resistance, diabetes type 2 and metabolic syndrome.
Owner:NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
Dietary fiber
ActiveUS20170349867A1Less adverse effectReduce rateMetabolism disorderDigestive systemFood additivePolydextrose
Provided is a dietary fiber characterized in that bitterness and unpleasant aftertaste are restrained. The dietary fiber has terminal sugars and is characterized in that the ratio of aldoses relative to the total of the terminal sugars is 10% or less. Such a dietary fiber may be, for example, indigestible dextrin, polydextrose or the like. The dietary fiber may be used as a food additive (for example, a beverage additive).
Owner:SUNTORY HLDG LTD
Phytospingosine derivative and composition containing same
ActiveUS10172777B2Good water solubilityEasily formulated into skin preparationAntibacterial agentsOrganic active ingredientsSolubilityMaltose
The present invention relates to a phytospingosine derivative generated by a condensation reaction of phytospingosine and maltose or lactose, which is an aldose-based disaccharide, and to a composition containing the same. The phytospingosine derivative of the present invention has high solubility in water compared with phytospingosine, is easy to formulate since the stabilization problem in a solution is solved, and maintains or further enhances the antibacterial effect of phytospingosine.
Owner:AMOREPACIFIC CORP
Method for regulating and controlling porous carbon prepared by high internal phase emulsion template method through aldose
ActiveCN112938932ALow apparent densityRealize regulationCarbon preparation/purificationPtru catalystPorous carbon
The invention belongs to the technical field of high polymer material preparation, and particularly relates to a method for regulating and controlling porous carbon prepared by a high internal phase emulsion template method through aldose. The preparation method comprises the following steps: dissolving a surfactant, a monomer and a catalyst in deionized water to obtain a water phase, slowly dropwise adding an oil phase into the water phase under a mechanical stirring condition to obtain an oil-in-water type high internal phase emulsion, and then carrying out a polymerization reaction to obtain a solid blocky crude product; and removing an internal phase through Soxhlet extraction, performing vacuum drying to obtain a porous polymer precursor, and performing carbonization and activation to obtain the porous carbon material. The supercapacitor prepared by taking the porous carbon prepared by the aldose pair high internal phase emulsion template method as the electrode material shows good electrochemical performance.
Owner:FUZHOU UNIV
Process for making ethylene glycol and/or propylene glycol from aldose- and/or ketose-yielding carbohydrates with ex situ hydrogenolysis or hydrogenation catalyst treatment
PendingUS20210087129A1Produced in advanceRestore and enhance activityOrganic compound preparationPreparation by hydrogenationPolymer sciencePtru catalyst
Processes are disclosed for the catalytic conversion using a heterogeneous hydrogenolysis or hydrogenation catalyst of carbohydrate feed to one or both of ethylene glycol and propylene glycol. In the disclosed processes, a portion of the heterogeneous catalyst in the reaction zone of the catalytic process is withdrawn and recycled and the recycle is integrated to enhance the overall process.
Owner:TECH PRECESS TECH INC
Substituted triazine compound as well as preparation method and application thereof
PendingCN114539176AChange electronic effectChange UVOrganic chemistryMaterial analysisChemical compoundTriazine derivative
The invention provides a substituted triazine compound as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The substituted triazine derivative provided by the invention has a structural formula shown as a formula (II), the substituted triazine derivative provided by the invention can be effectively applied to aldose detection, and mass spectrum and HPLC (High Performance Liquid Chromatography) detection results show that the obtained substituted triazine compound can be well combined with aldose and has a good biological development prospect; the method can be used for preparing a sugar derivatization reagent.
Owner:OCEAN UNIV OF CHINA
Lactose diagnosis/measurement reagent (kit) and method for measuring lactose concentration
InactiveCN101793775AFast measurementImprove accuracyMicrobiological testing/measurementColor/spectral properties measurementsLactasePhosphate
The invention relates to a lactose diagnosis / measurement reagent (kit) by using the technology of an enzyme colorimetric method and an enzyme coupling method, also relates to a method for measuring lactose concentration, and the composition and components of the reagent, and belongs to the technical field of medicine / food inspection and measurement. The reagent (kit) of the invention comprises the following components: buffer solution, NADH, phosphate group, lactase, glucose-6-phosphatase, aldose-6-phosphate reductase and a stabilizing agent. A sample and a reagent are mixed in a certain volume ratio to undergo a series of enzymatic reaction, the reactant is placed under an ultraviolet / visible light analytical instrument, and the rising degree of the absorbance of the reactant at the main wavelength of 340nm is measured, so that the lactose concentration is measured.
Owner:SUZHOU ANJ BIOTECHNOLOGY CO LTD
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