SN/T 2552.3-2010 English PDF
Basic dataStandard ID: SN/T 2552.3-2010 (SN/T2552.3-2010)Description (Translated English): Microbiological examination for milk and milk products hygiene. Part 3: Colony-count method of yeast and moulds Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: X16 Classification of International Standard: 67.100.01 Word Count Estimation: 18,146 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 6611-2004, MOD Regulation (derived from): National Quality Inspection [2010] No. 290 Issuing agency(ies): General Administration of Customs Summary: This standard specifies the conditions at 25��C detection and counting in milk and dairy yeasts, molds seedlings colony forming units approach. This standard applies to milk, liquid milk, powdered milk, dried sweet whey, dried cheese, milk, lactose, cheese, acid casein, lactic casein, rennet casein, acid whey powder, butter, frozen dairy products (including frozen foods), cream puddings, desserts, fermented milk and cream kind of yeast, mold counts. This section does not apply to fresh cheese in yeast detection. SN/T 2552.3-2010: Microbiological examination for milk and milk products hygiene. Part 3: Colony-count method of yeast and moulds---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 3. Colony-count method of yeast and moulds People's Republic of China Entry-Exit Inspection and Quarantine Standards Milk and dairy hygiene microbiology test methods Part 3. yeast, mold colony count Part 3. Colony-countmethodofyeastandmoulds (ISO 6611.2004, Milkandmilkproducts- Colony-counttechniqueat25 ℃, MOD) Issued on. 2010-05-27 2010-12-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released ForewordSN/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. yeast, mold colony count; --- 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 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of ISO 6611.2004 "Milk and dairy products yeast, mold 25 ℃ colony forming units counting method" (ISO 6611.2004 Milkandmilkproducts-Enumerationofcolony-formingunitsofyeastsand/ormoulds-Colony- counttechniqueat25 ℃) unanimously adopted a degree of modification, the main differences are as follows. --- According to GB/T 1.1 standard and the Chinese habit for some formatting has been modified; --- Some of the statements apply to international standards to apply to our standard formulation; --- The content of "normative references" in accordance with national standards were revised; --- Delete ISO 6611.2004 "defined." This section proposed and managed by the National Certification and Accreditation Administration Committee. This part of the Chinese Academy of Inspection and Quarantine, People's Republic of China Shandong Exit Inspection and Quarantine, People's Republic of China Jiangsu Exit Inspection and Quarantine is responsible for drafting. The main drafters of this section. Paul Room Sea Ray quality text, Zhaogui Ming, Jiang Yinghui, Jia Juntao, Zhao Liqing, LIU Yun-guo, Yanxian Hui, Lee Ming, Wang Jing, Han Qing, Zhu Changqing, Zhao Jun, Linxiu Guang, Zhang Xiumei. Milk and dairy hygiene microbiology test methods Part 3. yeast, mold colony count1 ScopeThis section SN/T 2552 provides for the detection and enumeration of milk and dairy products yeast, mold colony forming units at 25 ℃ Methods. This section applies to milk, liquid milk, powdered milk, dried sweet whey powder, cheese and dried milk, lactose, cheese, acid casein, lactic cheese Su, rennet casein, acid whey powder, butter, frozen dairy products (including frozen foods), cream pudding, desserts, fermented milk and cream yeast species Mother mold count. This section does not apply to fresh cheese yeast detection.2 Normative referencesThe 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 Principle 3 3.1 test sample if the initial product is a liquid or in other products in the suspended solids, using a predetermined selective medium needs and provisions Amount to prepare pour plates. Test samples or other samples tenfold dilutions suspension, under the same conditions to prepare pour plates. 3.2 tablet under aerobic conditions, 25 ℃ ± 1 ℃ culture 5d. 3.3 In order to obtain satisfactory results, select the appropriate level of dilution to dilution levels and the number of colonies on agar plates obtained from the calculated per gram Product per ml or yeasts, molds colony forming units (CFU).4 dilution and media4.1 Diluent Accordance with the provisions SN/T 2552.2 of. Aliquot 4.2 dilution, sterilization and storage Accordance with the provisions SN/T 2552.2 of. 4.3 yeast extract, glucose, oxytetracycline, agar See Appendix A A.1 chapter. ...... |
