Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

40 results about "Serial dilution" patented technology

A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion. A ten-fold serial dilution could be 1 M, 0.1 M, 0.01 M, 0.001 M ... Serial dilutions are used to accurately create highly diluted solutions as well as solutions for experiments resulting in concentration curves with a logarithmic scale. A tenfold dilution for each step is called a logarithmic dilution or log-dilution, a 3.16-fold (10⁰·⁵-fold) dilution is called a half-logarithmic dilution or half-log dilution, and a 1.78-fold (10⁰·²⁵-fold) dilution is called a quarter-logarithmic dilution or quarter-log dilution. Serial dilutions are widely used in experimental sciences, including biochemistry, pharmacology, microbiology, and physics.

Methods for detecting and quantifying specific probiotic microorganisms in animal feed

Methods and compositions are disclosed for confirming and quantifying the presence of a specific probiotic microorganism in a sample of animal feed. Hybridization and polymerase chain reaction (PCR) techniques are applied to identify the presence of the specific probiotic microorganism in cultures grown in most probable number and serial dilution methods, after calibration of the techniques using blank and control samples.
Owner:NUTRITION PHYSIOLOGY

High-cadmium-adsorption filamentous fungus Paecilomyces lilacinus XLA, and preparation method and application thereof

The invention relates to a high-cadmium-adsorption filamentous fungus Paecilomyces lilacinus XLA, and a preparation method and an application thereof. The preparation method comprises the following steps: 1, weighing a pot experiment soil sample used for heavy metal restoration and having a content of heavy metal cadmium of 50mg/Kg, adding to sterile water with glass beads, oscillating on a constant temperature shaking table, allowing an obtained solution to stand, taking an obtained supernatant, and carrying out serial dilution; 2, coating a Martin flat containing 60mM of cadmium with different dilution rates of dilutions, allowing the obtained flat to stand for a moment, inverting on a constant temperature culturing box, and culturing; 3, carrying out streaking purification of single colonies growing on the flat, coating the Martin flat with the obtained single colonies, and culturing; 4, carrying out separating screening to obtain the Paecilomyces lilacinus XLA stably resisting cadmium, and preserving on a PDA inclined plane for later use. The Paecilomyces lilacinus XLA is preserved and has a preservation number of CCTCC NO:M2012135. Viable and non-viable organism of the XLA can efficiently adsorb and remove the heavy metal cadmium in heavy metal sewage, so the XLA has the advantages of low cost and simple technology, and has an efficient restoration potential of heavy metal polluted soil and water.
Owner:HUAZHONG AGRI UNIV

High-throughput micro-droplet serial dilution device and high-throughput micro-droplet serial dilution method

The invention discloses a high-throughput micro-droplet serial dilution device and a high-throughput micro-droplet serial dilution method and relates to the field of serial dilution. The high-throughput micro-droplet serial dilution device comprises an upper subchip and a lower subchip, wherein relative displacement of the upper subchip and the lower subchip reaches a second position; micropores of series 1 are superposed with those of a first-row series 2; the concentration of a solution 1 in the micropores of the series 1 is changed by a solution 2 in the micropores in the first-row series 2; after the solutions are sufficiently mixed, the upper subchip is displaced to the third position relative to the lower subchip, and the micropores of the series 1 are enabled to be superposed with micropores in a second-row series 2; and the concentration of the solution 1 in the morepores of the series 1 is changed by the solution 2 in the micropores of the series 2 for the second time. Multiple relative displacement of the upper subchip and the lower subchip can be realized, and thereby the aim of performing gradient change of the solution 1 in the micropores of the series 1 is achieved. The high-throughput micro-droplet serial dilution device and the high-throughput micro-droplet serial dilution method disclosed by the invention can perform accurate serial dilution for nano-liter level or smaller volume and multi-proportion parallel operation at the same time; and complex workers or expensive liquid transfer robots do not be needed and environmental conditions of serial dilution are conveniently controlled.
Owner:SHANGHAI JIAO TONG UNIV

Method for separating microorganisms on surface of tobacco leaf at high temperature by utilizing pure tobacco leaf leach liquor solid plate

The invention provides a method for separating microorganisms on a surface of a tobacco leaf at a high temperature by utilizing a pure tobacco leaf leach liquor solid plate, belonging to the technical field of applied microbiology. The technical scheme of the method comprises the following steps: mixing a waste tobacco leaf liquid which is fully soaked (for 3-5 days) with agar (2.5g/100ml) based on the volume ratio of 5-15% (V/V), autoclaving at the pressure of 0.11-0.13MPa for 25-35 minutes (sterilizing for 230 minutes according to the ratio of 15 pounds per inch) under the conditions that no additional component is added and the pH value is not regulated, and pouring the mixture into a double layer plate to prepare the pure tobacco leaf leach liquor solid plate; and carrying out serial dilution on a tobacco leaf sample according to the conventional process, adding the diluted tobacco leaf sample into the pure tobacco leaf leach liquor solid plate, uniformly coating, and cultivating the pure tobacco leaf leach liquor solid plate in an incubator at the temperature of 50-60 DEG C until a bacterial colony is produced. The quantity and type of microorganisms grown on the surface of the tobacco leaf at a high temperature can be really reflected, and the microorganisms separated by the method are applicable to improving the quality of the tobacco leaf when the tobacco leaf is cured by flue.
Owner:KUNMING GUIXUN TECH

High-cadmium-adsorption filamentous fungus Paecilomyces lilacinus XLA, and preparation method and application thereof

The invention relates to a high-cadmium-adsorption filamentous fungus Paecilomyces lilacinus XLA, and a preparation method and an application thereof. The preparation method comprises the following steps: 1, weighing a pot experiment soil sample used for heavy metal restoration and having a content of heavy metal cadmium of 50mg / Kg, adding to sterile water with glass beads, oscillating on a constant temperature shaking table, allowing an obtained solution to stand, taking an obtained supernatant, and carrying out serial dilution; 2, coating a Martin flat containing 60mM of cadmium with different dilution rates of dilutions, allowing the obtained flat to stand for a moment, inverting on a constant temperature culturing box, and culturing; 3, carrying out streaking purification of single colonies growing on the flat, coating the Martin flat with the obtained single colonies, and culturing; 4, carrying out separating screening to obtain the Paecilomyces lilacinus XLA stably resisting cadmium, and preserving on a PDA inclined plane for later use. The Paecilomyces lilacinus XLA is preserved and has a preservation number of CCTCC NO:M2012135. Viable and non-viable organism of the XLA can efficiently adsorb and remove the heavy metal cadmium in heavy metal sewage, so the XLA has the advantages of low cost and simple technology, and has an efficient restoration potential of heavy metal polluted soil and water.
Owner:HUAZHONG AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products