39 results about "Planktonic bacteria" patented technology

The invention discloses a real-time microbial particle counter comprising a light path, an air channel intersected with the light path, and a signal processing system connected with the light path, wherein the light path comprises a lighting light path for irradiating tested particles and a collecting light path arranged along the advancing direction of the lighting light path; the collecting light path also comprises a relay system for separating the light path and separately detecting separated light paths; the air channel is used for sampling the tested particles; the signal processing system is used for analyzing and processing a signal, and comprises a fluorescent preamplifier and a scattered light preamplifier. The concentration of microbial particles in air is monitored in real time by taking laser-induced fluorescence detection as the principle, the particle sizes and the biological attributes of the tested particles are judged by detecting the intensities of scattered light and fluorescence emitted by exciting light, and the particles in a sampling airflow are counted, so that the automatic detection on planktonic bacteria microorganisms is achieved, and the real-time microbial particle counter is simple and convenient to operate, strong in detection instantaneity, high in sensitivity and high in accuracy.

In order to effectively kill indoor planktonic bacteria, the ion generating device has an ion generating unit (10), a temperature sensor (151) for detecting temperature, and a humidity sensor (152) for detecting humidity. The detection result and the humidity detection result detected by the humidity sensor (152) control the ion generator. Because it generates ions corresponding to temperature and humidity, it can effectively kill planktonic bacteria.

The invention discloses a preparation method of photosensitizer-supported polymeric micelle and an application of the micelle in killing of planktobacteria and bacterial biofilms. The photosensitizer-supported polymeric micelle is prepared from two block polymers PEG-b-PCL and PCL-b-PAE and is used for killing multiple drug-resistant bacteria and biofilms. A photosensitizer supported on composite shell micelle has good sterilization efficiency on bioluminescence gene transfected staphylococcus aureus S.aureus Xen36 drug-resistant to kanamycin and drug-resistant bacteria in the biofilms. A micellar system has the advantages as follows: 1) the preparation is simple; 2) a light source is simple, a complicated controller like a laser is not required, and light energy is very low and is easily converted to the clinical direction; 3) good singlet oxygen production efficiency is realized; 4) the photosensitizer-supported polymeric micelle has good killing effects on the drug-resistant bacteria and the biofilms and has good application prospect.

The invention provides a method aiming at removing carbon dioxide, an ethylene gas, a planktonic bacteria, dust and other fine floating pollutants, generated by fresh keeping container, a warehouse and the like, of vegetables, fruits, grains and the like at the present stage and then setting various kinds of corresponding devices.

The invention discloses an edible fungus liquid inoculating device, comprising a rack and a horizontal transport mechanism arranged on the rack for transporting a tray, and the horizontal transport mechanism is provided with a plurality of material-blocking mechanisms for blocking the movement of the tray along the transport direction of the tray at intervals; a positioning mechanism for clampinga culture container body in the tray is arranged above the material-blocking mechanism at the most front end of the rack; and the device further comprises a cover-opening mechanism for opening a bottle cover and an inoculation pipeline mechanism for conducting uniform inoculation for all culture containers in the tray. When the material-blocking mechanism at the most front end of the horizontal transport mechanism along the transport direction blocks a cargo, a detection signal is generated, and the detection signal is transmitted to a control device; and the control device sequentially controls the positioning mechanism, the cover-opening mechanism and the inoculation pipeline mechanism in response to the detection signal. The edible fungus liquid inoculation device can effectively prevent invasion of planktonic bacteria, and is high in automation degree, high in efficiency and uniform in inoculation.

The invention provides a water quality microorganism indication method based on big data and a molecular biotechnology. The method comprises the following steps: (1) collecting samples in a research area, detecting water quality, and analyzing main pollution factors and water quality characteristics of the research area; (2) constructing a water quality comprehensive score capable of reflecting the water quality condition to obtain a water quality comprehensive score judgment standard, and determining the water quality grades of all the samples; (3) obtaining a microbial flora structure of theresearch area through high-throughput sequencing, and screening out indicative microorganisms capable of indicating water quality change based on bioinformatics analysis; and (4) designing a specificprimer, constructing a fitting equation of the relative abundance of the indicative microorganisms and the comprehensive score of the water quality, and predicting the water quality grade of a sampleaccording to the relative abundance of the indicative microorganisms. The invention provides a technology for indicating the water quality of a water environment by using planktonic bacteria in a water body. The screened indicative microorganisms can be widely applied to water quality indication and evaluation of various water environments, and powerful support is provided for pollution prevention and control.

The invention relates to a stem cell liquid preparation bin control system based on a programmable controller and a control method thereof. The system comprises an industrial computer, a bin body controller, a servo amplifier, an execution device, a peristaltic pump, a dust particle sensor and a planktonic bacteria sensor, and the industrial computer and the peristaltic pump are connected with thebin body controller; the bin body controller is connected with the servo amplifier through an SSCNET III network, the servo amplifier is connected with the execution device, a touch screen is connected with the bin body controller, and the bin body controller is connected with the dust particle sensor and the planktonic bacteria sensor through an RS485 module. Equipment is automatically controlled to perform liquid preparation treatment in the stem cell culture process, the labor intensity of operators is reduced, and cross contamination is reduced.

The invention discloses a novel method for detecting air borne microorganism and a special detection bottle for realizing the method. The detection bottle mainly comprises a transparent bottle body a and a sealing bottle cap b provided with a pumping hole c and a sampling tube e, wherein the sampling tube e is inserted into the bottom of the bottle body; and the upper part of the sampling tube is provided with a sampling port d, while the bottom is of a porous structure. Before detection, water or a liquid culture medium is arranged in the detection bottle a, and the bottle cap b is covered on the bottle; moreover, the bottom of the sampling tube e is immersed; and the sampling port d and the pumping hole c are corked up and then are sterilized by high-pressure steam for further use. During actual detection, the detection bottle a is positioned in a detected area, and the pumping hole c is connected with a suction device provided with a flowmeter and a timer; the sampling port d is opened, and the suction device is turned on; air in the detected area is cleaned by water or the liquid culture medium e, and then is discharged by means of the sampling tube; when sampling is finished, a coagulating agent is added and stirred evenly; the pumping hole c and the sampling port d are corked up; and finally, cultivation and count are carried out. The method has the advantages of simple operation, accurate result and low cost.

The invention provides an air planktonic bacteria collector for a clinical laboratory, which relates to the technical field of air detection equipment, and aims to solve the problems that when an existing air planktonic bacteria collector for the clinical laboratory is used, a microporous device needs to be cleaned frequently, a cylindrical cavity of the microporous device is deep, so that the microporous device is difficult to clean by an operator, the cleaning effect is poor, the air permeability of a micropore device is easily affected, meanwhile, a plate is usually directly placed on a fixing frame, a reasonable and clamping structure is lacked, and when a collector is moved, the plate is easily loosened and falls off, and errors of a detection result are caused. The air planktonic bacteria collector comprises a sampling head, which is of a cylindrical cavity structure and vertically distributed, a micropore seat is arranged at the top of the sampling head, and a top cover is arranged at the top of the micropore seat. According to the invention, three brackets and mounting disc are in a parallel state through downward pressing of the plate, meanwhile, the three clamping plates clamp the plate through the elastic effect of the extension springs, and the plate can be quickly and effectively mounted.

The invention discloses application of Cinacalcet in inhibiting the biological activity of gram-positive bacteria. The Cinacalcet is used for inhibiting the growth activity of the gram-positive bacteria. The technical scheme of the invention discloses a new application of Cinacalcet, which can inhibit the biological activity of the growth of planktonic bacteria of various gram-positive bacteria, especially the Cinacalcet has the effects of inhibiting bacteria and removing the activity of a biofilm on enterococcus faecalis. In an environment infected by the enterococcus faecalis biofilm, the Cinacalcet has both bacteriostatic activity and activity of removing the biofilm. Moreover, compared with a single drug, the Cinacalcet used in combination with other antibiotics has higher antibacterial activity, the dosage of single-drug antibiotics can be obviously reduced, and the drug resistance selection pressure of the Cinacalcet is reduced.

The invention discloses a solid inoculation device for edible fungi. The main points of a technical scheme of the invention are as follows: the solid inoculation device comprises a frame, and a horizontal transport mechanism arranged on the frame and used for transporting a tray, wherein culture containers are vertically and horizontally arranged in the tray; the horizontal transport mechanism issuccessively provided with a first material blocking mechanism and a second material blocking mechanism used for blocking movement of the tray along the transport direction of the tray; the first material blocking mechanism and the second material blocking mechanism separates the horizontal transport mechanism into two working stations; the position of the first material blocking mechanism is provided with an inoculation pipeline mechanism used for realizing uniform inoculation; and the position of the second material blocking mechanism is provided with a cap opening mechanism used for openingthe bottle caps of the culture containers. The invention aims to provide the solid inoculation device for the edible fungi. The solid inoculation device has high degree of automation, can realize integral operation in each procedure, has high efficiency and short procedure switching time, can effectively prevent invasion of planktonic bacteria, guarantees benign reproduction of hyphae, can realize uniform inoculation of each culture container, and improves the quality of inoculation.

An improved formulation may include an enhanced ability relative to its predicates to destroy toxic threats in the form of sporulated bacteria, bacteria protected by biofilms, planktonic bacteria, fungus, viruses, chemical weapons, toxic chemicals including Fentanyl, its analogs, and a whole host of toxic industrial chemicals. The formulation may include a three part product composed of a buffered detergent chemical system, a hydrogen peroxide chemical system and an accelerator system designed to deliver activated peroxygen species when blended together.

Provided herein are compounds, compositions and methods for the treatment of Gram positive bacterial infections. The infection in some embodiments, is a pulmonary infection. The method for treating the bacterial infection, comprises in one embodiment, administering to a patient in need thereof, a composition comprising an effective amount of a compound a glycopeptide derivative of Formula (I) or (II), or a pharmaceutically acceptable salt of Formula (I) or (II). The bacterial infection can comprise intracellular bacteria, planktonic bacteria and/or bacteria present in a biofilm.

The invention discloses application of an indole-2-ketone compound with structural characteristics of a formula (I) in preparation of a product for preventing and treating oral bacteria, and belongs to the technical field of biological medicines. The compound has an excellent inhibiting or killing effect on planktonic bacteria of common pathogenic bacteria streptococcus mutans and Enterococcus faecalis and biological membranes thereof in an oral cavity in vitro; the compound has relatively low cytotoxicity to cells which can be contacted with an oral cavity under short-time exposure; and meanwhile, the compound has certain selectivity for killing biological membranes of oral pathogenic bacteria (S.mutans) and symbiotic bacteria (S.sanguinis and S.glodonii). Therefore, the compound shown inthe formula (I) can be used for preparing products for preventing and treating oral bacteria.

The invention discloses a preparation method and applications of a melia azedarach fruit extract for inhibiting the growth of pseudomonas aeruginosa and the formation of biomembrane of the pseudomonasaeruginosa. Through tests, the melia azedarach fruit extract can effectively inhibit the growth of the pseudomonas aeruginosa planktonic bacteria and the formation of the biomembrane of the pseudomonas aeruginosa planktonic bacteria when the content is between 0.5 g/mL and 1.0 g/mL, and has poor inhibition effects on the pseudomonas aeruginosa planktonic bacteria but can better inhibit the formation of the biomembrane of the pseudomonas aeruginosa. The melia azedarach fruit extract is natural and environment-friendly in raw material, significant in bacteriostatic and membrane-inhibiting effect and good for human health; and the melia azedarach fruit extract can be applied to prepare drugs, food fresh-keeping preservatives or daily chemical product antibacterial agents for cleaning chronicwounds such as pressure sores, diabetic foot ulcers and lower extremity arteriovenous ulcer, scabies, tinea capitis, eczema and painful and itching eczema.

The invention discloses an application of synergy of mannosylerythritol lipid and ultrasound in inhibition of growth of drug-resistant bacteria, and belongs to the technical field of food safety. Theapplication comprises the steps: mixing a sample to be sterilized with mannosylerythritol lipid to prepare an ultrasonic solution system, and carrying out ultrasonic treatment. Quantitative characterization shows that MEL-A and ultrasound have a synergistic effect which is remarkably superior to that of a single effect, and the method can effectively inhibit the growth of drug-resistant bacteria and planktonic bacteria and can remarkably inhibit the formation of a biological film of the drug-resistant bacteria. In combination with good emulsibility, surface activity, moisture retention and degradability of MEL-A, the MEL-A can be developed into antibacterial products such as natural food preservatives, food antibacterial films and the like, and has potential market value.