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SN/T 2552.12-2010: Microbiological examination for milk and milk products hygiene. Part 12: Detection and enumeration of listeria monocytogenes
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Microbiological examination for milk and milk products hygiene. Part 12: Detection and enumeration of listeria monocytogenes
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SN/T 2552.12-2010
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Basic data | Standard ID | SN/T 2552.12-2010 (SN/T2552.12-2010) | | Description (Translated English) | Microbiological examination for milk and milk products hygiene. Part 12: Detection and enumeration of listeria monocytogenes | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X16 | | Classification of International Standard | 67.100.01 | | Word Count Estimation | 24,286 | | Date of Issue | 2010-05-27 | | Date of Implementation | 2010-12-01 | | Quoted Standard | SN/T 2552.1; SN/T 2552.2 | | Adopted Standard | ISO 11290-1-1996/Amd 1-2004, MOD; ISO 11290-2-1998/Amd 1-2004, MOD | | Regulation (derived from) | National Quality Inspection [2010] No. 290 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the milk and dairy products monocytogenes Listeria detection and counting methods. This standard applies to milk and dairy products Listeria monocytogenes Detection and enumeration of bacteria. Other foods Listeria monocytogenes Detection and enumeration of bacteria can also refer to the use. | SN/T 2552.12-2010: Microbiological examination for milk and milk products hygiene. Part 12: Detection and enumeration of listeria monocytogenes
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Microbiological examination for milk and milk products hygiene.Part 12. Detection and enumeration of listeria monocytogenes
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Milk and dairy hygiene microbiology test methods
Part 12. monocytogenes Listeria
Detection and counting
Part 12. Detectionandenumerationoflisteriamonocytogenes
Issued on. 2010-05-27
2010-12-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
SN/T 2552 "Milk and dairy products Hygienic science test methods" is divided into thirteen sections.
--- Part 1. Guidance on sampling;
--- Part 2. Preparation of test sample dilution;
--- Part 3. yeasts, molds, colony counting;
--- Part 4. Psychrophile microbial colony counts;
--- Part 5. Salmonella testing;
--- Part 6. Citrobacter inspection;
--- Part 7. Enterobacter cloacae inspection;
--- Part 8. Proteus mirabilis and inspection;
--- Part 9. Klebsiella test;
--- Part 10. Enterobacter sakazakii immunofluorescence test;
--- Part 11. Bacillus cereus Isolation and counting;
--- Part 12. monocytogenes Listeria detection and counting;
--- Part 13. Pseudomonas Isolation and counting.
This section is SN/T 2552 Part 12.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The partial modification using ISO 11290-1.1996/Amd.1.2004 (E) "Microbiology of food and animal feed mononucleosis
Health Listeria level detection and counting method - Part 1. Detection method "(Microbiologyoffoodandanimalfeeding
stuffs-HorizontalmethodforthedetectionandenumerationofListeriamonocytogenes-Part 1.
Detectionmethod) and ISO 11290-2.1998/Amd.1.2004 (E) "Microbiology of food and animal feed monocytogenes
Listeria level detection and enumeration methods - Part 2. Enumeration method "(Microbiologyoffoodandanimalfeeding
stuffs-HorizontalmethodforthedetectionandenumerationofListeriamonocytogenes-Part 2. Enu-
merationmethod) revision, taking into account the practical situation of China's import and export inspection and quarantine, for some of which have been deleted
Save, and adds some additional content, the main differences are as follows.
--- According to GB/T 1.1, GB/T 20000.2 requirements and habits of the Chinese for some formatting has been modified;
--- The number of international standards to apply to the presentation of our standard way of expression;
--- Remove the "Directory", "Introduction", "definition", "principles" and "References" section;
--- On the "Normative references" description according to GB/T 1.1 requirements were modified;
--- The "warning" to "security requirements" and placed at the end of a standard paragraph.
--- Increasing the PCR detection method.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section drafted by. China Inspection and Quarantine Science Research Institute, Inner Mongolia, People's Republic of China Exit Inspection and Quarantine.
The main drafters of this section. Wang Haiyan, Zhaogui Ming, Liu middle school, Liu, Liu Hong, Zhao Linli, Ao Granville.
Milk and dairy hygiene microbiology test methods
Part 12. monocytogenes Listeria
Detection and counting
1 Scope
This section SN/T 2552 provisions of the milk and dairy products monocytogenes Listeria detection and counting methods.
This section applies to milk and dairy products monocytogenes Listeria detection and counting. Other foods monocytogenes Lee
Listeria detection and enumeration can also refer to use.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member, undated references, the latest edition (including any amendments) applies to this document.
SN/T 2552.1 milk and dairy hygiene microbiology test methods - Part 1. Guidance on sampling
SN/T 2552.2 milk and dairy hygiene Microbiological test method - Part 2. Preparation of test sample dilution
3 media and reagents
3.1 HalfFraser broth. See Appendix A, Section A.1 chapter.
3.2 Fraser broth. See Appendix A, Section A.2 chapter.
3.3 Listeria chromogenic agar medium (ALOA). See Appendix A, Section A.3 chapter.
3.4 Oxford Agar (OXA). See Appendix A in Chapter A.4.
3.5 yeast extract pancreatic casein soy agar (TSA-YE). See Appendix A for the first chapter A.5.
3.6 yeast extract pancreatic casein soy broth (TSB-YE). See Appendix A for the first chapter A.6.
3.7 sheep blood agar. See Appendix A, Section A.7 chapter.
3.8 fermentation medium sugar (xylose and rhamnose). See Appendix A for the first chapter A.8.
3.9 Dynamic medium. See Appendix A for the first chapter A.9.
3.10 synergistic hemolysis (CAMP) test medium and test strains. See Appendix A for the first chapter A.10.
3.11 3% hydrogen peroxide (H2O2) solution.
3.12 Gram Staining Solution. See Appendix A for the first chapter A.11.
3.13 primer. See Appendix A for the first chapter A.12.
The mixture was 3.14 dNTP. dATP, dTTP, dGTP, dCTP all 2.5mmol/L.
3.15 10 × Taq buffer.
3.16 TaqDNA polymerase.
3.17 agarose (electrophoresis grade).
3.18 ethidium bromide solution. A.13 in Appendix A of the first chapter.
3.19 DNA molecular weight marker 100bpDNALadderMarker.
3.20 50 × electrophoresis buffer. See Appendix A for the first chapter A.14.
3.21 6 × loading buffer. See Appendix A for the first chapter A.15.
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