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535 results about "Vibrion" patented technology
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Vibrion may also refer to: the singular form of vibrio, a genus of anaerobic bacteria with a comma-like shape. Vibrion is an antiquated term for microorganisms, especially pathogenic ones; see Germ theory of disease. The term was specifically used in reference to motile microorganisms, and the name of the genus Vibrio derives from this term. The term is closely tied to the history of the study of cholera. It was used in biological literature between the late 19th century and the 1920s.
Broad-Spectrum Antibacterial and Antifungal Activity of Lactobacillus Johnsonii D115
The present invention demonstrated the potential use of Lactobacillus johnsonii D115 as a probiotic, as a prophylactic agent or as a surface treatment of materials against human and animal pathogens such as Brachyspira pilosicoli, Brachyspira hyodysenteriae, Shigella sonnei, Vibrio cholera, Vibrio parahaemolyticus, Campylobacter jejuni, Streptococcus pneumoniae, Enterococcus faecalis, Enterococcus faecium, Clostridium perfringens, Yersinia enterocolitica, Escherichia coli, Klebbsiella pneumoniae, Staphylococcus aureus, Salmonella spp., Bacillus cereus, Aspergillus niger and Fusarium chlamydosporum. The proteineous antimicrobial compound was partially characterized and found to be heat tolerant up to 121° C. for 15 min, and acid tolerant up to pH1 for 30 min at 40° C. The compound is also stable to enzymatic digestion, being able to retain more than 60% antimicrobial activity when treated with pepsin and trypsin.
Owner:KEMIN IND INC
Nanosilver-containing antibacterial and antifungal granules and methods for preparing and using the same
Owner:LEGEND WIN FINANCE
Broad-spectrum antibacterial bacillus amyloliquefaciens strain and application thereof
ActiveCN103173397ASimple cultivation conditionsPromote growthBiocideBacteriaBiotechnologyBacillus amylolyticus
The invention relates to bacillus amyloliquefaciens NCPSJ7 and further relates to an application of the strain in treating plant diseases, diseases before and after harvesting fruits and vegetables as well as in preventing food-borne pathogenic bacteria and putrefying bacteria. The strain is preserved in China Center for Type Culture Collection (CCTCC) on March 22, 2013, wherein the preservation number is CCTCC NO: M2013098 and the strain is named as bacillus amyloliquefaciens NCPSJ7. The thallus and fermentation liquor of the strain disclosed by the invention has the effects of treating plant diseases caused by plant pathogenic fungus including antagonistic peach root rotten disease, fusarium wilt of cucumber, botrytis cinerea, jujube anthracnose, pear black spot, pear blue mould, apple brown rot, apple altermaria leaf spot, watermelon fusarium wilt and the like, as well as diseases after harvesting fruits and vegetables and food-borne pathogenic bacteria and putrefying bacteria including antagonistic staphylococcus aureus, salmonella paratyphi A, vibrio parahaemolyticus, yeast and the like; moreover, the bacillus amyloliquefaciens is broad in spectrum and antibacterial and great in potential in developing novel, efficient and natural biological control and biological preservative and fresh-keeping preparation.
Owner:INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI
Primer, detection method and detection reagent kit for detecting vibrio parahemolyticus
InactiveCN101153330AStrong specificityIncreased sensitivityMicrobiological testing/measurementDNA/RNA fragmentationVibrio parahemolyticusLoop-mediated isothermal amplification
The invention relates a technique for fast detecting food-borne pathogens based on a loop-mediated isothermal amplification, LAMP technique. A primer for diction of vibrio parahemolyticus can augment the specific base sequence of a target gene which is the tih-GenBank (accession no. AY578148) of the vibrio parahemolyticus, and the primer is complementary to a part of or a complementary chain fragment of the nucleic acid sequence on the 946-1140 loci on the target gene. The invention provides a primer having specificity to a specific gene fragment of the vibrio parahemolyticus, and through detecting whether or not the detecting specimen in a reagent box of the primer unit contains the specific gene fragment of the vibrio parahemolyticus, determines whether the vibrio parahemolyticus exists in the specimen or not.
Owner:ZHUHAI DISEASE PREVENTION & CONTROL CENT
Vibrio bacteriophage and bactericidal composition preparation method and application thereof
ActiveCN109207440ASpecific inactivationNo side effectsAntibacterial agentsBiocideVibrio parahemolyticusRoom temperature
The invention relates to a Vibrio bacteriophage and a bactericidal composition preparation method and application thereof, belonging to the field of biotechnology. The bacteriophage composition comprises Vibrio alginolyticus bacteriophage vB_ValS_PcR-1 (accession number being CCTCC NO: M 2018391), Vibrio harveyi vB_VhaM_PcB-1G (accession number being CCTCC NO: M 2018392) and Vibrio parahaemolyticus phage vB_VhaP_OW (accession number being CCTCC NO: M 2015577). A high-potency culture product can be obtained after host actions, the composition is good in stability at room temperature, has a widehost splitting range, can efficiently inhibit growth of main pathogenic vibrios such as vibrio alginolyticus, vibrio harveyi, vibrio parahaemolyticus, can be applied as a biological antimicrobial agent for vibrio contamination control in food and aquaculture.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
Three oligonucleotide sequences for identification and detection of vibrio alginolyticus as well as preparation method and application thereof
ActiveCN102329862AImprove stabilityQuick checkMicrobiological testing/measurementDNA preparationSingle strandOligonucleotide
The invention discloses three oligonucleotide sequences for identification and detection of vibrio alginolyticus as well as a preparation method and an application thereof and relates to identification and detection of vibrio alginolyticus. The oligonucleotide sequences comprise SEQ ID No. 1-3 (sequence identity number 1-3). The method comprises the following steps: synthesizing an ssDNA (single-stranded deoxyribonucleic acid) oligonucleotide library (5'-TCA GTC GCT TCG CCG TCT CCT TC----N35----GCA CAA GAG GGA GAC CCC AGA GGG-3') for screening; mixing the oligonucleotide library with the vibrio alginolyticus and then performing SELEX (systematic evolution of ligands by exponential enrichment) screening; performing cloning and sequencing on an aptamer-enhanced library after completing the SELEX screening; performing interception in different lengths on high-copy ssDNA emerged in the sequencing result so as to get a series of new sequences, and further constructing complementary sequences of the new sequences; and performing affinity and specificity verification on the obtained new sequences and the complementary sequences thereof so as to get corresponding aptamers.
Owner:JIMEI UNIV
Oligonucleotide sequence for detecting vibrio alginolyticus and application thereof
InactiveCN102199667AImprove stabilityQuick checkMicrobiological testing/measurementAgainst vector-borne diseasesVibrio DNAOligonucleotide
The invention discloses an oligonucleotide sequence for detecting vibrio alginolyticus and application thereof. The oligonucleotide sequence for detecting vibrio alginolyticus comprises four oligonucleotide sequences, such as SEQIDNo.1, SEQIDNo.2, SEQIDNo.3 and SEQIDNo.4, and the vibrio alginolyticus can be identified and detected by one oligonucleotide sequence. The oligonucleotide sequence disclosed by the invention has the characteristics that the detection is rapid, the operation is simple and the stability of an adaptor is higher than that of an antibody, is easy to prepare and has shorter preparation period.
Owner:JIMEI UNIV
Bdellovibrio strain for preventing and treating mastitis and applications thereof
The invention discloses a Bdellovibrio strain for preventing and treating mastitis and applications thereof. A Bdellovibrio BDS01 is obtained by separation, and is unicellular, arced and 0.9-0.25 micrometer in size; the end of the Bdellovibrio BDS01 has flagellum which is 4 micrometers long. When cultured by a two-layer plating method at 28 DEG C for four days, the Bdellovibrio BDS01 can form transparent round plaques with the diameter of 1-2 mm. The microbial preparation prepared by using the Bdellovibrio BDS01 plastid has favorable effects for preventing cow mastitis. Compared with the telotroch, the plastid has the characteristics of convenient preparation and storage, strong environmental resistance, slightly slow sterilization action, longer sterilization action time, and the like, and does not have toxic or side effect on cows. Therefore, the microbial preparation containing the Bdellovibrio BDS01 plastid is suitable for large-size factory culture of cows, and a novel method forgreen processing and production of milk and for preventing and treating mastitis can be provided.
Owner:SOUTH CHINA UNIV OF TECH
Chip for gene detection of multiple vibrios at the same time, and detection and use thereof
ActiveCN101475986AEffective guidanceEffectively guide productionMicrobiological testing/measurementMicroorganism based processesForward primerVirulent characteristics
The present invention relates to a detection chip for performing gene detection to various vibrio and its detection and applications. The invention provides 16S rRNA sequences corresponding to each vibrio of vibrio anguillarum, vibrio harveyi, vibrio alginolyticus, vibrio parahaemolyticus, brilliant vibrio and Fisher vibrio; heat shock protein hsp60 probe sequence; virulence gene probe sequence; 16S rRNA forward primer sequence; 16S rRNA reverse primer sequence; heat shock protein hsp60 forward primer sequence; heat shock protein hsp60 reverse primer sequence; virulence gene forward primer sequence and virulence gene reverse primer sequence. The present invention has specific, sensitive and high-throughput features, can simultaneously detect six kinds of bacteria virulence genes, and the invention will effectively guide the production as an important disease early-warning detection method used in clinical diagnosis of aquatic animals.
Owner:YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
Anti-vibrio parahaemolyticus chicken yolk antibody, preparation method and application thereof
The invention discloses anti-vibrio parahaemolyticus chicken egg yolk antibody and the preparation method. The anti-vibrio parahaemolyticus chicken egg yolk antibody is prepared and obtained through the steps of preparation and inactivation of vibrio parahaemolyticus antigen, immunization of hens, collection of immunized eggs, coarse extraction of anti-vibrio parahaemolyticus chicken egg yolk antibody from the egg yolk liquid of the immunized eggs and purification. The invention also provides the application of the anti-vibrio parahaemolyticus chicken egg yolk antibody in food safety detection reagents and disease immune diagnostic reagents related with the preparation of vibrio parahaemolyticus and medicines and healthy products or feed additives for preventing and curing the related diseases of vibrio parahaemolyticus. The anti-vibrio parahaemolyticus chicken egg yolk antibody (IgY) prepared and provided by the invention has the advantages that the specificity and the purity are high, the anti-vibrio parahaemolyticus chicken egg yolk antibody has good effects when being used for preparing immunology testing reagents and medicines and feed additives for treating the related diseases of vibrio parahaemolyticus, the cost is low, the production volume is high, and the anti-vibrio parahaemolyticus chicken egg yolk antibody is easy to be industrialized.
Owner:SOUTH CHINA AGRI UNIV
Loop-mediated isothermal amplification detection primer group, detection method and kit of vibrio parahaemolyticus
InactiveCN104513857AStrong specificityHigh sensitivityMicrobiological testing/measurementAgainst vector-borne diseasesLoop-mediated isothermal amplificationSample handling
The invention discloses a loop-mediated isothermal amplification detection primer group, a detection method and a kit of vibrio parahaemolyticus. The detection primer group is as follows: an upstream outer primer F3: 5'-GCAAAGAAACGCTTGGCG-3', a downstream outer primer B3: 5'-TGCATAGCAATGTTGTCGCT-3', an upstream inner primer FIP: 5'-TCTCTCGGGTGGTGGATGGGTTTCGTTACACTCCGTTCGC-3'; a downstream inner primer BIP: 5'-ATGGTTTGCTACTCTCGCACCCTCGGCTGACAAATGGCTCTA-3'. The detection method disclosed by the invention has the advantages of high sensitivity, high specificity, good accuracy rate and short detection time, only 12 hours are taken from sample treatment to result report, no PCR instrument or electrophoresis instrument is needed, the operation process is simple, and compared with other PCR techniques, the loop-mediated isothermal amplification detection primer group is relatively high in specificity and is applicable to detection of primary testing organizations and food companies.
Owner:GUANGDONG INST OF MICROORGANISM +1
Food-originated pathogenic bactenium quick detection gene chip and its application
InactiveCN1536090AMicrobiological testing/measurementAgainst vector-borne diseasesFood poisoningBeta-hemolytic streptococcus
The present invention provides a gene chip for quickly detecting pathogens from food source, discloses the preparation method of said gene chip and provides 26 oligonucleotide probe sequences for detection. Said gene chip can quickly, accurately and high-effectively detect and identify the class of the pathogens in food, and its detection range includes staphylococcus aureus, Shiga's bacillus, salmonella, colibacillus 0157, bacillus proteus, mononuclear hyperplastic listerella, enterocolitis yersinia, aeruginous pseudomonads, vibrio parahaemolyticus, vibrio cholerae, bacillus cereus, beta hemolytic streptococcus, coconut fermentation pseudomonads, boticin, vibrio jejuni and bacillus perfringens, etc.
Owner:INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL
A silver/titanium oxide nanotube antifouling agent interfacially modified by polydopamine and a preparing method thereof
InactiveCN104255797ALong-lastingSignificant long-term antibacterial effectBiocideDisinfectantsTio2 nanotubeVibrio anguillarum
A preparing method of a silver / titanium oxide nanotube antifouling agent interfacially modified by polydopamine is disclosed. The preparing method comprises following steps of: (1) preparing titanium oxide powder; (2) preparing titanium oxide nanotubes by adopting a hydrothermal method and by adopting the obtained titanium oxide powder as a reaction substrate; (3) modifying surfaces of the titanium oxide nanotubes by utilization of the polydopamine; (4) adding the obtained titanium oxide nanotubes the surfaces of which are modified with the polydopamine into a silver nitrate solution, and adsorbing silver ions by utilization of a vacuum adsorption method; (5) subjecting a precipitate product to centrifugal separation, and irradiating under ultraviolet light; and (6) adding the product irradiated by the ultraviolet light into the silver nitrate solution again, and repeating the step (4) and the step (5) for a plurality of times to finally obtain the antifouling agent. The preparing method is simple, feasible, mild in reaction conditions, low in equipment requirement, capable of large-scale production, and high in popularization and application value. The prepared antifouling agent has significant long-acting bacterial inhibiting effects for staphylococcus aureus, escherichia coli and vibrio anguillarum.
Owner:OCEAN UNIV OF CHINA
Novel vibrio parahaemolyticus phage as well as composition, preparation method and application thereof
ActiveCN107686832AAntibacterial agentsViral/bacteriophage medical ingredientsMicroorganismHealth risk
The invention relates to the technical field of microbes, and provides a novel vibrio parahaemolyticus phage as well as a composition, a preparation method and application thereof. The novel vibrio parahaemolyticus phage specifically refers to a vibrio parahaemolyticus phage VP46 of which the collection number is CCTCC NO:M2016290, a vibrio parahaemolyticus phage VP48 of which the collection number is CCTCC NO:M2016291 or a vibrio parahaemolyticus phage VP7 of which the collection number is CCTCC NO:M2016289. The phage is a strictly virulent phage, is highly toxic to host bacteria, has a widerhost range, and is highly toxic to the host bacteria at a low concentration; DNA (Deoxyribonucleic Acid) of the phage cannot encode proteins which may cause a potential health risk; the phage survives stably in a culture solution at room temperature, and survives for more than 12 months at a temperature of below 4 DEG C; the phage can be well proliferated on a non-pathogenic bacterial host; and large-scale industrial production can be realized.
Owner:PHAGELUX (NANJING) BIO-TECH CO LTD
Bdellovibrio bacteriovorus bacterial strain eliminating aquatic product Gram-positive pathogenic bacterium and application thereof
The invention discloses a bdellovibrio bacteriovorus bacterial strain eliminating aquatic product Gram-positive pathogenic bacterium and an application thereof. The invention separates to obtain bdellovibrio bacteriovorus BDS02 the length of flagellum of which is at least 1.8mu m. The bdellovibrio bacteriovorus with flagellum on the end is cambered single cell the size of which is 0.65*0.2 mu m when observed by an electron microscope. The two layer plating method is used for cultivating the bdellovibrio bacteriovorus bacterial strain at the temperature of 28 DEG C for four days to form transparent round negativecolony the diameter of which is 1-2mm. Before the microorganism preparation prepared by the bdellovibrio bacteriovorus BDS02 is eaten by aquatic products, common Gram-positive pathogenic bacteria comprising Mycobacterium tuberculosis, star-shaped nocardia asteroids, rhodococcus erythropolis, streptococcus faecalis, staphylococcus epidermidis, clostridium perfringens and corynebacterium glutamicum in the transportation process and cultivation process can be eliminated, which improves the safe factor of raw aquatic products for consumers, protects the health of the consumers and provides guarantee for greenly processing and producing the aquatic products.
Owner:SOUTH CHINA UNIV OF TECH
Method for detecting Vibrio parahaemolyticus
InactiveCN106191298AHigh sensitivityStrong specificityMicrobiological testing/measurementMicroorganism based processesForward primerFood poisoning
The invention provides a method for detecting Vibrio parahaemolyticus. The sequence of the forward primer is SEQ ID NO:1, the sequence of the reverse primer is SEQ ID NO:2, and the sequence of the probe is SEQ ID NO:3. A real-time RPA (recombinase polymerase amplification) process is utilized to detect the food-borne pathogen Vibrio parahaemolyticus, thereby implementing safe, specific, quick, sensitive and simple field quick detection on the Vibrio parahaemolyticus, and further overcoming the defects in the existing traditional detection technique. The method is suitable for field detection, can effectively inhibit the epidemic situation caused by Vibrio parahaemolyticus food poisoning in time, and perfects the food safety control system.
Owner:宁波海洋研究院 +1
Nucleotide specific to Vibrio fluvialis O2, O4, O13, O15 and O18 and application thereof
ActiveCN103898108APracticalImprove accuracyMicrobiological testing/measurementDNA/RNA fragmentationNucleotideSerotype
The invention relates to a nucleotide specific to Vibrio fluvialis O2, O4, O13, O15 and O18 serotypes and an application thereof. The nucleotide comprises 1) at least one of nucleotides shown in SEQIDNO: 1-14; and 2) at least one of nucleotides shown in SEQIDNO: 1-14. The nucleotides can be used for preparing PCR (polymerase chain reaction) kits and gene chips for detecting Vibrio fluvialis. The nucleotide specific to Vibrio fluvialis O2, O4, O13, O15 and O18 serotypes disclosed by the invention, as well as a PCR kit and a gene chip which contain the nucleotide, are strong in practicability, and the PCR kit is simple in preparation method, short in detection cycle, rapid in speed, strong in maneuverability, convenient for industrialized production, and low in detection cost; the accuracy is high; and the sensitivity is high.
Owner:NANKAI UNIV
Endolysin derived from Vibrio parahaemolyticus phage, and application of endolysin
ActiveCN105200028AImprove the bactericidal effectAntibacterial agentsBacteriaLyaseVibrio parahaemolyticus
The invention belongs to the field of biotechnology, and particularly relates to an endolysin derived from the Vibrio parahaemolyticus phage, and application of the endolysin. The endolysin is derived from the Vibrio parahaemolyticus phage of which the amino acid sequence is all or a part of the shown amino acid sequence SEQ ID No: 1. Sequence analysis shows that the endolysin is a lyase in the phase, and the lyase enables a bacterial cell wall to be cracked; test confirms that protein formed from the amino acid sequence is better in bactericidal activity. The endolysin has an obvious bactericidal effect on in vitro Vibrio parahaemolyticus after being expressed and purified by a suitable expression vector existing in the market, and can be applied to preparation of a Vibrio parahaemolyticus bacteriostat.
Owner:OCEAN UNIV OF CHINA
Bifidobacterium lactis BL-99 capable of regulating gastrointestinal florae and application of Bifidobacterium lactis BL-99
The present invention provides a Bifidobacterium lactis capable of regulating gastrointestinal florae and application of the Bifidobacterium lactis BL-99, and belongs to the technical field of microorganisms. The Bifidobacterium lactis has gastric acid resistance, the survival rate of viable bacteria is 62% or above after the Bifidobacterium lactis BL-99 is treated for 30 min in a pH 2.5 gastric acid solution, and the survival rate of viable bacteria is 61% or above after the Bifidobacterium lactis BL-99 is treated for 2 h. The bacterium can significantly promote the growth of bifidobacteria and lactic acid bacteria, and can inhibit desulphovibrio / enterobacter in intestinal tracts, especially curatively inhibit helicobacter pylori and / or Escherichia-Shigella, can be used to prepare food, medicines and feed with gastrointestinal tract flora regulation effects, and has wide application prospects.
Owner:INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
Pediococcus pentosaceus G11 strain as well as screening and applications thereof
ActiveCN106190894AToleratedHas antibacterial activityAntibacterial agentsBacteriaSynechococcusAnimal mortality
The invention relates to a pediococcus pentosaceus G11 strain as well as screening and applications of the pediococcus pentosaceus G11 strain. The pediococcus pentosaceus G11 strain is preserved in the China Center for Type Culture Collection, and is assigned with the accession number of CCTCC NO:2016248. The pediococcus pentosaceus G11 strain has tolerance to compound sulfamethoxazole and ceftazidime, has antibacterial activity for vibrio parahaemolyticus, aeromonas hydrophila, vibrio alginolyticus, staphylococcus aureus and beta streptococcus, has certain stress resistance and enzyme producing ability, is free of hemocyte solubility, and has no drug tolerance for most antibiotics; the dipping bath experiment proves that the pediococcus pentosaceus G11 strain is harmless to the host, can improve the immunity of the body, has wide application prospects, can be applied to probiotic preparations, and also can be prepared into bacterial powder which is then added into a feed as a feed additive, further, the growth of pathogenic bacteria in the bodies of the animals is inhibited, so that the death rate of animals is reduced, and the pediococcus pentosaceus G11 strain is a probiotic brain worthy of development.
Owner:SHANTOU UNIV
Bactericide for preventing and curing crop bacterial diseasess as well as preparation method and application thereof
InactiveCN101637186ASolve drug residueSolve problems such as resistanceBiocideBacteriaPesticide pollutionBacterial disease
The invention discloses a bactericide for preventing and curing crop bacterial diseasess as well as a preparation method and application thereof. In the preparation method, oligosaccharide is added into bdellovibrio bacteriovorus solution to be evenly mixed to obtain the bactericide for preventing and curing crop bacterial diseasess. The invention applies bdellovibrio bacteriovorus solution for preventing and curing crop bacterial diseases for the first time, fills the vacancy of researching and developing bdellovibrio bacteriovorus at home and abroad and adds new species for biopesticide. Asbdellovibrio bacteriovorus has the characteristics of broad cracking pattern and quick growth and has the outstanding capability of eliminating various pathogenicbacteria and bacteria, after combinedwith oligosaccharide, the bdellovibrio bacteriovorus strengthens crop resistance, greatly improves pesticide effect and enlarges the preventing and curing spectrum of bacterial diseases. The bactericide prepared by the invention has no toxicity or pollution, is safe to natural enemies of crop diseases and pests, pathogenic bacteria have small possibility of producing resistance, so that the invention overcomes 3R problems brought by abusing antibiotics and avoids the defects of serious chemical pesticide pollution and ecological balance damage at present.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of immunogold rapid test paper for vibrio parahaemolyticus
Owner:厦门佰能检验技术服务有限公司
Microecologic preparation for inhibiting vibrio in litopenaeus vannamei culture as well as preparation and application
InactiveCN106834174AImprove survival ratePromote growthAntibacterial agentsBacteriaOligosaccharideWater quality
The invention provides a microecologic preparation for inhibiting vibrio in litopenaeus vannamei culture as well as preparation and application, and relates to aquaculture. The microecologic preparation comprises at least one of bacillus safensis and bacillus pumilus, and at least one of lactobacillus plantarum and lactobacillus plantarum; when the microecologic preparation is in a form of microbial bacteria solution, the preparation method comprises the following step: mixing a bacillus safensis fermented solution, a bacillus pumilus fermented solution, a lactobacillus plantarum fermented solution and a lactobacillus plantarum fermented solution; at least one of vitamin C, fructo-oligosaccharide, mannitol, and the like is added as a protecting agent to the mixture. The microecologic preparation is applicable to the preparation of preparations for promoting the growing of litopenaeus vannamei, improving the immunity and disease resistance of the litopenaeus vannamei, preventing and controlling the diseases of the litopenaeus vannamei, increasing the survival rate, purifying culture water quality, and particularly preventing and controlling intestinal tract thickening, red-leg disease, eye-rot disease and white spot syndrome virus of the litopenaeus vannamei. The microecologic preparation is applicable to preparation of veterinary drugs, feed additives or water purifiers, and the like.
Owner:THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION
Universal gene-knockout suicide vector for vibrios and application thereof
InactiveCN105063073AStrong lethal effectWide range of lethal objectsBacteriaHybrid cell preparationAgricultural scienceRestriction enzyme digestion
The invention discloses a universal gene-knockout suicide vector for vibrios and a construction method theroef and provides an application thereof in gene knockout of the vibrios. The universal gene-knockout suicide vector pLP12 is a ring-shaped vector and comprises a PBAD promoter, a repressor protein gene araC, an RP4 transferring initiation site, a chlorampenicol resistant gene, an R6K duplicating initiation site, a multiple-cloning-site area and a lethal gene vmi480; the multiple-cloning-site area at least contains two AhdI restriction enzyme digestion sites; the suicide vector pLP12 is subject to AhdI restriction enzyme digestion to form linearized suicide vector pLP12T. The universal gene-knockout suicide vector adopts entirely-new reverse selection genes vmi480 and is used for replacing the common sacB gene. Foreign fragments carried by the pLP12T are transferred to vibrio cells to be mutated by a jointing mode, under the pressure of antibiotics and reverse selection of products of lethal gene vmi480, first-time homologous recombination and second-time homologous recombination are carried out on the vibrios successively, and finally the mutant strain with deletion of target genes is generated.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Gene chip for detecting six kinds of diarrhea pathogens and its prepn process and kit
InactiveCN101045944AAccurate acquisitionNo pollution in the processMicrobiological testing/measurementAgainst vector-borne diseasesVibrio parahaemolyticusDiarrhea
The present invention relates to one kind of gene chip for detecting six kinds of diarrhea pathogens, and the gene chip includes solid carrier and oligonucleotide probe fixed on the carrier. The oligonucleotide probe includes DNA or cDNA segments selected from nucleotide sequences corresponding to the genomes of Shigella, haemorrhagic colibacillus, invasive colibacillus, Vibrio parahaemolyticus, Vibrio cholreae and salmonella. The said chip together with sample treating reagent, hybridizing reagent, color reagent and the specification constitutes the detection kit. The present invention has high detection efficiency and high detection accuracy.
Owner:IPE BIOTECHNOLOGY CO LTD
Detection genetic chip and detection kit for infectious diarrhea
InactiveCN102140507ALow costImprove throughputMicrobiological testing/measurementAgainst vector-borne diseasesBacteroidesEscherichia coli
The invention provides a genetic chip and a detection kit related to major pathogenic microorganisms causing infectious diarrhea of human beings, which are mainly specific to 13 types of bacteria including lapactic bacillus coli / shigella, salmonella, comma bacillus, vibrio parahemolyticus, aeromona hydrophila, plesiomonas, virio hollisae, vibrio fluvialis, vibrio mimicus, Wauter's strains, vibriodamsela and vibrio furnissii. The genetic chip comprises a solid-phase carrier and an oligonucleotide probe fixed on the solid-phase carrier, wherein the oligonucleotide probe comprises DNA (Deoxyribonucleic Acid) fragments selected from genes including a gyrB gene, an ITS gene, a dnaJ gene, a toxR gene and the like with remarkable biological evolution advantages or complementary DNA fragments. By adopting the genetic chip and the detection kit provided by the invention, major pathogenic microorganisms causing infectious diarrhea of human beings can be detected. The genetic chip and the detection kit have the characteristics of easiness and convenience for operation, high flux, high accuracy, high repeatability and the like, and can be applied to clinical detection of inspection departments in hospitals.
Owner:NANKAI UNIV
Method for preparing questin by utilizing ocean aspergillus flavipes HN4-13 bacterial strain and application of questin
ActiveCN104946693AReasonable designEasy to operateAntibacterial agentsOrganic active ingredientsBiotechnologyVibrio anguillarum
The invention discloses a method for preparing questin by utilizing an ocean aspergillus flavipes HN4-13 bacterial strain. The method comprises the following steps: conducting separation and purification on antibacterial active substances generated through fermentation of the aspergillus flavipes HN4-13 bacterial strain according to silica-gel column chromatography, Sephadex LH-20 column chromatography, preparation of high performance liquid chromatography (PHPLC) and the like by taking vibrio harveyi as an indicator bacterium, so as to obtain a vibrio harveyi-preventing active compound HY2; indentifying the structure of the active compound HY2 according to spectra data such as ESI-MS, 1H-NMR and 13C-NMR, so as to determine that the active compound HY2 is questin. The questin is obtained through separation of a metabolic product of aspergillus flavipes HN4-13; experiments show that the questin can perform a certain inhibiting function of the pathogenic bacteria, such as vibrio harveyi, vibrio anguillarum, vibrio parahaemolyticus and vibrio cholerae, of aquatic products, and can be used for preparation of medicine preventing pathogenic vibrio of the aquatic products.
Owner:JIANGSU MARINE RESOURCES DEV RES INST LIAN YUNGANG
Uncoupled vibrion attenuation/isolation devices
InactiveUS20080048069A1Reduce connection stiffnessCosmonautic vehiclesCosmonautic safety/emergency devicesUltrasound attenuationVibration attenuation
Owner:ZHENG GANGTIE +3
Method for detecting food-derived pathogenic vibrio bacteria by composite fluorescence PCR technique
InactiveCN101113473AStrong specificityAccurate identificationMicrobiological testing/measurementAgainst vector-borne diseasesBiotechnologyMicroorganism
The invention discloses a method by using composite fluorescence PCR technique to detect food-borne pathogenic vibrio and pertains to bacteria detection technical field. The main technic proposal is to design a primer group sequence. The pathogenic vibrio is common pathogenic bacteria in food and has a serious effect on human health. The quick and accurate detection of pathogenic vibrio in food is a main premise condition for effective prevention and control of pathogen bacteria infection. The food-borne pathogenic vibrio required detection mainly comprises parahemolytic vibrio, vibrio cholerae and vibrio vulnificus. The invention overcomes technical shortage in the prior art aiming at the object bacteria and provides the quick and low-cost detection method by using composite fluorescence PCR technique to detect parahemolytic vibrio, vibrio cholerae and vibrio vulnificus. The method can use one-diode PCR reaction and primarily screen parahemolytic vibrio, vibrio cholerae and vibrio vulnificus.
Owner:ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU +1
Method and kit for detecting VBNC vibrio parahemolyticus
PendingCN107354228AStrong specificityAccurate Quantitative QuantityMicrobiological testing/measurementAgainst vector-borne diseasesVibrio parahemolyticusMicrobiology
The invention relates to a method for detecting VBNC vibrio parahemolyticus in a freezing matrix by means of a PMA-qPCR method and primer and probe combination implementing the method. The PMA-qPCR detection method provided by the invention is high in specificity, high in sensitivity and good in repeatability in vibrio parahemolyticus detection and is suitable for detecting viable but nonculturable vibrio parahemolyticus in a frozen food.
Owner:PLANTS & ANIMALS & FOOD TESTING QUARANTINE TECH CENT SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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