Method for detecting pathogenic vibrios by MALDI-TOF-MS (Matrix Assisted Laser Desorption Ionization-Time-Of-Flight-Mass Spectrometry)
A MALDI-TOF-MS, pathogenic Vibrio technology, which is applied in the construction and application of the MALDI-TOF-MS database, can solve the problems of geographical differences of strains, imperfect identification data of pathogenic Vibrio, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0056] Embodiment 1, MALDI-TOF-MS detects Vibrio parahaemolyticus
[0057] Use the determined appropriate medium and culture time: 2% NaCl brain heart extract agar, culture 29 strains (strain number 1-29) at 36°C for 24 hours, weigh 8±2 mg colonies each, and pretreat the preparation with mixed solvent treatment. After the samples were formed, the accuracy of the experimental strains was analyzed using the conditions determined by the above research content. Data acquisition software Flexcontrol by MALDI-TOF-MS TM 3.0 Collect data from the sample wells, and then pass the MALDI-TOF-MS identification software Biotyper TM 2.0 Analyze the obtained mass spectra of each strain and match them with the resources in the database. The MALDI-TOF-MS identification results were compared with the biochemical identification results.
[0058] The identification results and identification scores were obtained and compared with the biochemical identification results (Table 2). The MALDI-TOF-...
Embodiment 2
[0063] Example 2. MALDI-TOF-MS detection of Vibrio mazei
[0064] The method established by the present invention was used to carry out 6 repeated analyzes on the standard strain of Vibrio mazei (ATCC700040). After all the strains were detected by MALDI-TOF-MS, the operation steps of the content of the invention were followed, and the 6 mass spectra obtained by each strain were compared, as well as the identification scores and identification results. The 6 mass spectra obtained by the strain are all very close (see figure 2 ), the identification results were completely consistent, and the identification scores were all above 2.3 points. It shows that the MALDI-TOF-MS detection method of the present invention has ideal repeatability.
Embodiment 3
[0065] Embodiment 3, MALDI-TOF-MS detection method specificity analysis
[0066] Using the method and conditions established by the present invention to treat Vibrio parahaemolyticus (ATCC17802), Vibrio vulnificus (ATCC27562), Vibrio mimeticum (ATCC33653), Vibrio meibii (ATCC700040) and other bacterial strains ATCC25922, ATCC25923, ATCC13076, ATCC19111 Identification by MALDI-TOF-MS. The specificity of the MALDI-TOF-MS detection method was evaluated by the obtained identification results, scores and mass spectra.
[0067] MALDI-TOF-MS accurately identified 4 standard strains belonging to the genus Vibrio (ATCC17802, ATCC27562, ATCC33653 and ATCC700040) and 4 standard strains of different genera (ATCC25922, ATCC25923, ATCC13076, ATCC19111). Obtained mass spectrograms through observation, the four standard strains of Vibrio parahaemolyticus, Vibrio vulnificus, Vibrio mimeticus and Vibrio martensili, which belong to the genus Vibrio, have mass-to-charge ratios (m / z) in the range...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com