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174 results about "Amylosucrase activity" patented technology
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Catalysis of the reaction: sucrose + 1,4-alpha-D-glucosyl(n) = D-fructose + 1,4-alpha-D-glucosyl(n+1). [EC:2.4.1.4, MetaCyc:AMYLOSUCRASE-RXN]
Non-maltogenic exoamylases and their use in retarding retrogradation of starch
InactiveUS6667065B1Highly effective in retarding or reducing detrimental retrogradationImprove propertiesDough treatmentHydrolasesAmylosucrase activitySide chain
The present invention relates to a process for making a bread product. The process includes the addition of a non-maltogenic exoamylase that hydrolyses starch to a starch medium, and the application of heat to the starch medium. The non-maltogenic exomylase cleaves one or more linear malto-oligosaccharides, predominantly consisting of from four to eight D-glucopyranosyl units, from non-reducing ends of amylopectin side chains. The non-maltogenic exoamylase has an endoamylase activity of less than 0.5 endoamylase units (EAU) per unit of exoamylase activity.
Owner:DUPONT NUTRITION BIOSCIENCES APS
Bacillus pumilus, probiotics preparation and preparation method and application thereof
ActiveCN102586144AHigh activityBroad inhibitoryAntibacterial agentsBacteriaAmylaseAmylosucrase activity
The invention discloses bacillus pumilus, a probiotics preparation and a preparation method and application thereof. The Bacillus pumilus LV149 is preserved in China center for type culture collection (CCTCC) in Nov. 23th, 2011, and the preservation number is CCTCC NO: M 2011411. The bacillus pumilus LV149 has strong extracellular protease, lipase and amylase activities, has wide rejection capability to vibrio and has no hemolytic activity. The Bacillus pumilus LV149 serves as fermenting bacterial strains and is performed with solid fermentation, drying and smashing so as to prepare bacillus pumilus probiotics preparation which uses Bacillus pumilus LV149 as the active ingredients. The bacillus pumilus probiotics preparation can be added into prawn feeds for feeding prawns, so that growth of prawn intestinal pathogenic vibrio can be restrained, prawn vibriosis can be reduced, simultaneously prawn growth is promoted, fish bait coefficient is reduced, quality of commodity is improved, culture cycle is shortened, accordingly culture risk and culture cost are reduced, biological safety is high and the bacillus pumilus, the probiotics preparation and the preparation method and application thereof have wide application prospect in aquaculture.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Fermented soybean products and methods of producing them
InactiveUS20080044501A1Enhanced enzyme productivityExcellent proteaseBiocideFungiBiotechnologyAmylase
Disclosed are fermented soybean protein products with enhanced enzyme productivity and methods for producing them by solid fermentation using Bacillus subtilis GR-101 and additionally Aspergillus oryzae GB-107 (KCTC 10258BP). A novel Bacillus subtilis GR-101 strain (KCCM 10673P), which has excellent protease productivity in soybean meal, is also disclosed. Fermentation using Bacillus subtilis GR-101 strain (KCCM 10673P) producing protease combined with Aspergillus oryzae GB-107 (KCTC 10258BP) having amylase activity can remove trypsin inhibitors known as anti-nutritional factors and thus can provide soybean peptides with high digestion ratio and excellent enzyme activities. Feed comprising the soybean peptides as active component and capable of improving productivity of livestock and food for human comprising the soybean peptides supply is further disclosed.
Owner:GENEBIOTECH
Polypeptide
The invention describes a PS4 variant polypeptide derivable from a parent polypeptide having amylase activity selected from the group consisting of: (a) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 161, 178, 179, 223, 229, 272, 303, 307, 309 and 334; (b) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 145, 146, 157, 178, 179, 223, 229, 272, 303, 307 and 334; (c) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; and (d) a polypeptide comprising an amino acid mutation at each of positions 3, 33, 34, 70, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; with reference to the position numbering of a Pseudomonas saccharophilia exoamylase sequence shown as SEQ ID NO: 1, uses of such a polypeptide as a food or feed additive, and nucleic acids encoding such.
Owner:DUPONT NUTRITION BIOSCIENCES APS
Modified amylase from pseudomonas saccharophilia
Described is a PS4 variant polypeptide derivable from a polypeptide having amylase activity selected from: (a) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 161, 178, 179, 223, 229, 272, 303, 307, 309 and 334; (b) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 145, 146, 157, 178, 179, 223, 229, 272, 303, 307 and 334; (c) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; and (d) a polypeptide comprising an amino acid mutation at each of positions 3, 33, 34, 70, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; referring to the numbering of a Pseudomonas saccharophilia exoamylase shown as SEQ ID NO: 1.
Owner:AS DE DANSKE SUKKERFABRIKKER
Antistaling process and agent
InactiveUSRE38507E1Inhibition formationAvoid softnessMilk preparationDough treatmentBiotechnologyAmylase
The staling of leavened baked products such as bread is retarded by adding an enzyme with exoamylase activity to the flour or dough used for producing the baked product in question.
Owner:NOVOZYMES AS
Glycosyl hydrolases
The invention relates to a new glycosyl hydrolases with an amyloltic activity and nucleic acids coding for said gylcosyl hydrolases, A PCR-based method for identifying and preparing new gylcosyl hydrolases from metagenome DNA and several possible technical uses for such glycosyl hydrolases with an amylolytic activity. Washing and cleaning products containing such enzymes, and methods and possible uses corresponding thereto are particularly interesting.
Owner:BRAIN AG
Drying chemical reagent paper for quantitatively measuring activity of human body alpha-amylase
ActiveCN101082622AHigh strengthImprove uniformityMaterial analysis by observing effect on chemical indicatorMicrobiological testing/measurementHuman bodyChemical reaction
The invention discloses a dried chemical indicator paper to test human alpha-diastatic activity in the external clinical diagnostic agent technical domain, which is composed of long-bar shaped upper and lower support layers, each middle testing layers, wherein the indicator paper is divided into hand-held area and testing area, wherein the testing area is dispersing layer, filter layer and agent layer from upwards to downwards; the dispersing layer is selected from kinds of grid material of synthetic fiber material; the filter layer can be kinds of filter material to filter blood; the agent layer is asymmetrical synthetic film; one sampling hole is opened on the upper support layer for sample to enter the dispersing layer to permeate the filter layer and agent layer and change color at agent layer due to chemical reaction; the testing hole of lower support layer can test the change of optical density in the reacting course. The inveniton can test the human alpha-diastatic activity quantitatively, which provides evidence for acute pancreatitis.
Owner:SHANGHAI KEHUA BIO ENG
Thermostable alpha-amylases
ActiveUS7189552B2Quick responseHigh resultSugar derivativesBacteriaEscherichia coliOpen reading frame
An isolated polynucleotide comprising an open reading frame encoding a polypeptide having alpha-amylase activity, the polypeptide selected from the group consisting of: a) a polypeptide comprising an amino acid sequence which has at least 70% identity with amino acids 22 to 450 of SEQ ID NO:4; b) a polypeptide comprising an amino acid sequence which has at least 70% identity with the polypeptide encoded by the amylase encoding part of the polynucleotide inserted into a plasmid present in the E. coli host deposited under the Budapest Treaty with DSMZ under accession number DSM 15334; c) a polypeptide encoded by a polynucleotide comprising a nucleotide sequence which has at least 70% identity with the sequence shown from position 68 to 1417 in SEQ ID NO:3; and d) a fragment of (a), (b) or (c) that has alpha-amylase activity.
Owner:NOVOZYMES AS
Recombinant spore for displaying human serum albumin on surface of bacillus subtilis and preparation method thereof
InactiveCN102181469AOvercome the disadvantages of complicated separation and purification processImprove stabilityBacteriaPeptide/protein ingredientsAmylaseAmylosucrase activity
The invention belongs to the technical field of recombinant fusion protein medicaments. In the method, capsid protein genes cotC of spores of bacillus subtilis are used as molecular vectors and are recombined with human serum albumin hsa genes, so that integrated recombinant plasmid for fusion expression is constructed; after the bacillus subtilis is transformed through the recombinant plasmid for fusion expression of the human serum albumin HAS, exogenous genes are integrated in amylase genes amyE at specific sites on chromosomes through homologous recombination, and the amylase genes are subjected to insertional inactivation, so that a recombinant strain has no amylase activity, the recombinant bacillus subtilis strain comprising fusion expression CotC-HAS is successfully screened, and the human serum albumin is displayed on the surface of the spore produced by inducing the recombinant strain. The recombinant spore can be directly and orally taken by animals; and the recombinant spore has a part of medicinal effects and nutrition functions of the human serum albumin on the basis of keeping physiological property of the spore.
Owner:JIANGSU UNIV
Liquid egg yolk product comprising lysophospholipoprotein
This invention pertains to a novel liquid egg yolk product which contains lysophospholipoprotein. More particularly, this invention pertains to a novel liquid egg yolk product containing lysophospholipoprotein from a phospholipoprotein modified using a non-animal derived phospholipase A, and a process therefor, which is kosher, does not have a porcine or bovine source, and does not contain appreciable levels of amylase. The product is useful as an emulsifier in foodstuffs such as sauces, spreads, mayonnaise, dressings, salad dressings, and the like. A process for the manufacture of a liquid egg yolk product containing lysophospholipoprotein comprising: (a) processing a phospholipase A-containing microbial fermentate to remove undesirable amylase and protease co-products of the fermentation to produce a refined phospholipase A-containing microbial product; and (b) modifying a liquid egg yolk with the refined phospholipase A-containing microbial product of step (a) to produce a modified liquid egg yolk product containing lysophospholipoprotein, said modified liquid egg yolk product having (i) a degree of conversion of phospholipoprotein to lysophospholipoprotein of at least 10%; and (ii) an amylase activity of less than 50 units / litre.
Owner:M G WALDBAUM
Pentapeptide KLPGF with auxiliary hyperglycemic function
InactiveCN104497105AInhibits alpha-amylase activityInhibits α-glucosidase activityMetabolism disorderPeptidesAmylosucrase activityAlpha-amylase
The invention belongs to the biotechnical field, especially relates to a pentapeptide with an auxiliary hyperglycemic function, and concretely relates to a pentapeptide KLPGF capable of inhibiting the activity of alpha-glucosidase and inhibiting the activity of alpha-amylase. The amino acid sequence of the pentapeptide KLPGF is Lys-Leu-Pro-Gly-Phe. The pentapeptide can be used to develop auxiliary hpyerglycemic drugs and functional foods.
Owner:BOHAI UNIV
Aspergillus oryzae ZA156 and application thereof
ActiveCN107746812AIncrease umamiHigh activityFungiMicroorganism based processesAmylaseNeutral protease
The invention provides Aspergillus oryzae ZA156 suitable for producing soy sauce, and relates to an application of Aspergillus oryzae for increasing original glutamic acid of the soy sauce. The Aspergillus oryzae ZA156 neutral protease activity and amylase activity are high, glutaminase vitality is high, the Aspergillus oryzae ZA156 is suitable for producing original high-freshness soy sauce, theglutamic acid in raw oil is increased by about 10%, the amino nitrogen yield is increased by 8%, the deposition amount is reduced by 3%, and the appearance and delicious taste of the soy sauce throughbrewing and fermentation are obviously increased.
Owner:FOSHAN HAITIAN FLAVOURING & FOOD CO LTD +2
Macrocyclic polyphenol compound, and preparation and application thereof in pharmacy
ActiveCN103641871APrevent proliferationInhibits alpha-amylaseOrganic active ingredientsSugar derivativesSide effectAmylosucrase activity
The invention provides a new use of a macrocyclic polyphenol compound separated from a penthorum chinense pursh extract in pharmacy. The macrocyclic polyphenol compound comprises a compound 1, a compound 2, a compound 3 and a compound 4, wherein the structural formulas of the compounds are as shown in the specification; the compounds have the following pharmacological activities that (1) the alpha-amylase activity is significantly inhibited, and the compounds have certain hypoglycemic effects, and (2) TGF (transforming growth factor)-beta1-induced hepatic stellate cell proliferation is significantly inhibited, and the compounds have anti-liver-fibrosis effects by pharmacology and efficacy experiments. The invention provides a novel medicament for preventing and treating diabetes mellitus, and an anti-liver fibrosis medicament. The medicament is abundant in raw material source, small in side effect, and beneficial to environmental protection, and has a relatively great clinical application value.
Owner:SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
Method
InactiveUS20130171296A1Improved animal performanceReduce amountPolypeptide with localisation/targeting motifMilk preparationAmylosucrase activityBuffer solution
The present invention relates to a method for identifying a pepsin resistant alpha amylase enzyme for use in a feed supplement comprising: i) providing an alpha amylase enzyme; ii) admixing said alpha amylase with corn based feed and buffer solution comprising a pepsin concentration of 9000 U / ml at pH 3, 40° C., 500 rpm for at least 120 minutes and analysing alpha amylase activity on said alpha amylase compared to a control sample; wherein said control sample differs in that no pepsin is present during incubation; and iii) selecting an alpha amylase enzyme which substantially maintains alpha amylase activity under the assay conditions; feed supplements and feedstuffs comprising a pepsin resistant alpha amylase and the use of pepsin resistant alpha amylases in feed.
Owner:DUPONT NUTRITION BIOSCIENCES APS
High efficiency preparation method of high temperature alpha-amylase and mutant thereof
ActiveCN101457230AImprove translationEfficient secretionBacteriaMicroorganism based processesBacillus licheniformisAmylosucrase activity
A high temperature alpha-amylase and a high efficiency preparation method of the mutant thereof belongs to the fermentation engineering field. The invention provides a method for high efficiently secreting expressing a high temperature alpha-amylase and mutant thereof with alpha-amylase activity through a bacillus, especially a bacillus licheniformis mutant strain as a host cell. The synthesis and secretion level of the high temperature alpha-amylase or mutant thereof of the recombinant strain of the invention reaches 18-25mg / mL during fed-batch fermentation and is 3-4.5 times of the original strain high temperature alpha-amylase synthesis level. The high temperature alpha-amylase of the invention is useful for reducing the fermentation manufacture cost of the industrial enzyme, simplifying the fermentation manufacture process and reducing fermentation industrial environment pressure.
Owner:福建福大百特生物科技有限公司
Alpha-amylase mutants
InactiveUS20030170769A1Microbiological testing/measurementTissue cultureMutantAlpha-amylase activity
The present invention relates to a method of constructing a variant of a parent Termamyl-like alpha-amylase, which variant has alpha-amylase activity and at least one altered property as compared to the parent alpha-amylase, comprises i) analysing the structure of the parent Termamyl-like alpha-amylase to identify at least one amino acid residue or at least one structural part of the Termamyl-like alpha-amylase structure, which amino acid residue or structural part is believed to be of relevance for altering the property of the parent Termamyl-like alpha-amylase (as evaluated on the basis of structural or functional considerations), ii) constructing a Termamyl-like alpha-amylase variant, which as compared to the parent Termamyl-like alpha-amylase, has been modified in the amino acid residue or structural part identified in i) so as to alter the property, and, optionally, iii) testing the resulting Termamyl-like alpha-amylase variant with respect to the property in question.
Owner:NOVOZYMES AS
Disease-resistant microorganism preparation special for chicken
InactiveCN101244088AGood activity against Escherichia coliOffset adjustmentAntibacterial agentsBacteriaDiseaseEscherichia coli
The invention relates to a disease-resistant microbial preparation which is special for broiler chickens, wherein, the strain is bacillus subtilis, a liquid preparation is obtained by means of submerged fermentation, a solid preparation is obtained by means of carrier adsorption or solid fermentation. The microorganism have significant inhibitory effect on escherichia coli in vitro, and have strong therapeutic effect on respiratory diseases, white diarrhea, yellow diarrhea and other diseases of the broiler chickens, simultaneously, the microorganism have high activity of protease, lipase and amylase, and have strong degradation ability for botanical carbohydrate. The disease-resistant microbial preparation has the advantages of improving feed conversion rate, increasing the appetite, promoting growth and enhancing disease resistance, and can be used in stages for the broilers growing poorly and sick broiler chickens.
Owner:丁之铨 +1
Methods for using polypeptides having amylase activity and nucleic acids encoding them
The invention relates to uses of polypeptides having amylase activity, nucleic acids encoding them, and methods for making and using them. For example, in one aspect, the invention provides methods for making alcohol using polypeptides of the invention. In one aspect, the polypeptides having amylase activity have increased activity and stability at acidic, neutral and alkaline pH and increased temperature. In one aspect, the invention provides methods for producing an alcohol, for producing a high-maltose or a high-glucose syrup or a mixed syrup, for liquifying a starch-comprising composition, for hydrolyzing a starch, comprising use of polypeptides of the invention, or polypeptides encoded by the nucleic acids of this invention.
Owner:SYNGENTA PARTICIPATIONS AG
Lactobacillus plantarum BUFX and application thereof in metabolic syndrome
ActiveCN113308421AIncrease consumptionInhibitory activityBacteriaMetabolism disorderBiotechnologyAmylase
The invention provides a lactobacillus plantarum BUFX (Lactobacillus plantarum) and application thereof in metabolic syndrome, which relate to the technical field of microorganisms and application of the microorganisms. The strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.22172. The lactobacillus plantarum is separated and screened from feces of adults, can promote glucose consumption of HepG2 hepatoma carcinoma cells, inhibits alpha-amylase activity, can remarkably reduce the weight and blood fat content of high-fat diet mice, improves glucose tolerance, and has important application significance for preventing or treating metabolic diseases such as diabetes, obesity and the like.
Owner:BEIJING QUANTIHEALTH TECH CO LTD
Liquid egg yolk product comprising lysophospholipoprotein
Owner:M G WALDBAUM
Recombinant spores of surface displayed silkworm alcohol dehydrogenases and preparation method of same
InactiveCN102174557AOvercome the disadvantage of instabilityHigh expressionBacteriaMicroorganism based processesSurface displayBiotechnology
In the invention which belongs to the technical field of recombinant fusion proteins, silkworm alcohol dehydrogenases as exogenous proteins are displayed on surfaces of bacillus subtilis. Capsid protein genes cotC of spores of the bacillus subtilis, serving as molecular vectors, are recombined with silkworm alcohol dehydrogenase genes Bmadh to produce integrated recombinant plasmids which express the silkworm alcohol dehydrogenases BmADH in a fused manner so as to convert the bacillus subtilis; and exogenous genes are integrated in amylase genes amyE at special positions on a chromosome through homologous recombination, and the amylase genes are damaged, so that recombinant strains are free of the activities of the amylase genes; and therefore, recombinant bacillus subtilis strains containing fusion expressions CotC-BmaDH are successfully screened. Spores with fused proteins of silkworm alcohol dehydrogenases displayed on the surfaces are obtained through the inducible expression of the recombinant strains. In the invention, original alcohol dehydrogenases with instable temperature and pH become the fused proteins of the alcohol dehydrogenases with relatively stable activities under different environmental environments, and produced recombinant spores can be used for the direct oral administration of animals.
Owner:JIANGSU UNIV
Enyzmes having alpha amylase activity and methods of making and using them
The invention relates to alpha amylases and to polynucleotides encoding the alpha amylases, and methods of making and using them. In addition methods of designing new alpha amylases and methods of use thereof are also provided. The alpha amylases have increased activity and stability at increased pH and temperature.
Owner:VERENIUM CORPORATION
Alpha-amylase activity inhibitors
InactiveUS7037536B2Strong inhibitory activityBiocideMetabolism disorderDyslipidemiaAmylosucrase activity
The present invention relates to an α-amylase activity inhibitor, and to food and beverages comprising the α-amylase activity inhibitor. The α-amylase activity inhibitor of the present invention exhibits remarkably excellent α-amylase inhibitory activity as compared with guava extract. Accordingly, food and beverages containing the α-amylase activity inhibitor are diet food and beverages suitable for people of high blood-sugar level or hyderlipidemia.
Owner:YAKULT HONSHA KK
Stress Measurement Kit and Stress Measurement Method
InactiveUS20100206748A1Produced economicallyHigh sensitivityImmobilised enzymesBioreactor/fermenter combinationsStress measurementAmylosucrase activity
Provided is a stress measurement kit that is economical and that has good sensitivity. The stress measurement kit for measuring a stress level of a test subject includes: (A) a sensor chip including an electrically insulating substrate, and an electrode system that is placed on the electrically insulating substrate and that includes at least a working electrode and a counter electrode, wherein glucose dehydrogenase (GDH) and an electron mediator are immobilized on the working electrode; (B) a polysaccharide; and (C) a sensor body including an insertion hole into which the sensor chip is inserted, an electrical measurement means that is electrically connected to the electrode system of the sensor chip in a state where the sensor chip is inserted into the insertion hole, and a conversion means by which a current value or an electric quantity measured by the electrical measurement means is converted into an amylase activity value.
Owner:NIPRO CORP
Modified amylases from Pseudomonas species
The invention describes a PS4 variant polypeptide derivable from a parent polypeptide having amylase activity selected from the group consisting of: (a) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 161, 178, 179, 223, 229, 272, 303, 307, 309 and 334; (b) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 145, 146, 157, 178, 179, 223, 229, 272, 303, 307 and 334; (c) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; and (d) a polypeptide comprising an amino acid mutation at each of positions 3, 33, 34, 70, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; with reference to the position numbering of a Pseudomonas saccharophilia exoamylase sequence shown as SEQ ID NO: 1, uses of such a polypeptide as a food or feed additive, and nucleic acids encoding such.
Owner:DUPONT NUTRITION BIOSCIENCES APS
Preparing purification method for thermophilic alpha-amylase
InactiveCN101063115AImprove purification efficiencyLow costEnzymesFermentationAlkalinityPurification methods
The invention discloses a preparing method of thermophilic alpha-amylase (PFA), which comprises the following steps: heating and dissolving recombinant protein inclusion body under the condition of alkalinity; diluting; compositing; separating and purifying through column layer. This method possesses high reclaiming ratio and high alpha-amylase activity.
Owner:SHANGHAI INST OF BIOLOGICAL SCI CHINESE ACAD OF SCI
Preservative for storing and preserving fresh Chinese chestnut
The invention relates to a preservative for storing and preserving fresh Chinese chestnut and belongs to the technical field of fruit and vegetable storage and preservation. The preservative for storing and preserving fresh Chinese chestnut contains chitosan, konjaku flour, pulullan and a preservative accelerant, wherein the preservative accelerant is more than one or two of pearl powder, the Chinese chestnut supercritical extractive, a grain sprout aqueous extract and orange peel essential oil. The preservative is compounded by further adding a right amount of the pearl powder, the Chinese chestnut supercritical extractive, the grain sprout aqueous extract or the orange peel essential oil on the basis that chitosan, konjaku flour and pulullan are compounded. Compared with the traditional preservative suitable for preserving fresh Chinese chestnut, the preservative disclosed by the invention can preferably keep the stability of the POD activity, PPO activity and amylase activity of Chinese chestnut and can be used for reducing the rotting rate and weight loss rate of the Chinese chestnut and prolonging the storage life.
Owner:SHANDONG INST OF POMOLOGY
Fungal alpha-amylase variant with high maltose generation rate and preparation method for fungal alpha-amylase variant
ActiveCN106047844AIncreased maltose contentVector-based foreign material introductionGlycosylasesBiotechnologyGeneration rate
The invention discloses a fungal alpha-amylase variant with high maltose generation rate and a preparation method for the fungal alpha-amylase variant. The alpha-amylase variant is obtained by substituting one and / or multiple areas and / or positions of areas 77-81, areas 135-140, areas 214-220 and areas 331-335 correspondingly shown as SEQ ID NO:2, and has alpha-amylase activity. Compared with parental fungal alpha-amylase, the fungal alpha-amylase variant with high maltose generation rate has the advantages that the maltose content of a starch hydrolysate of the fungal alpha-amylase variant is increased by about 5 percent, and the fungal alpha-amylase variant has application advantages in industrial production of high-maltose syrup.
Owner:合肥停弦渡生物科技有限公司
Polypeptides having alpha amylase activity
InactiveUS20160083703A1Improve washing effectMolecular stabilizationAnimal cellsBacteriaAmylaseAmylosucrase activity
The present invention relates to polypeptides having alpha-amylase activity and polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.
Owner:NOVOZYMES AS
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