Foodstuffs. Methods of analysis for the detection of genetically modified organisms and derived products. Qualitative nucleic acid based methods (ISO 21569:2005)
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ISO 21569:2005 describes the procedure to qualitatively detect genetically modified organisms (GMOs) and derived products by analysing the nucleic acids extracted from the sample under study. The main focus is on polymerase chain reaction (PCR) based amplification methods. It gives general requirements for the specific detection and identification of target nucleic acid sequences (DNA) and for the confirmation of the identity of the amplified DNA sequence. Guidelines, minimum requirements and performance criteria laid down in ISO 21569:2005 are intended to ensure that comparable, accurate and reproducible results are obtained in different laboratories. ISO 21569:2005 has been established for food matrices, but could also be applied to other matrices (e.g. feed and plant samples from the environment). Specific examples of methods are provided in Annexes A to D.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of the method
4.1 General
4.2 PCR amplification
4.3 Detection and confirmation of PCR products
5 Reagents
5.4 PCR buffer solution
6 Apparatus and equipment
7 Procedure
7.1 Quality, integrity and amplifiability of nucleic acid extracts
7.2 Performance criteria
7.3 Aspects of PCR design
7.4 PCR target descriptions
7.5 Controls
7.6 PCR set-up, detection and confirmation of PCR products
8 Interpretation
8.1 General
8.2 Verification
9 Expression of results and quality assurance
9.1 General
9.2 Expression of a negative result
9.3 Expression of a positive result
9.4 Quality assurance requirements
10 Test report
Annex A Target-taxon-specific methods (informative)
ISO 21571:2005 Foodstuffs -- Methods of analysis for the detection of genetically modified organisms and derived products -- Nucleic acid extraction
ISO 24276:2006 Foodstuffs -- Methods of analysis for the detection of genetically modified organisms and derived products -- General requirements and definitions
ISO 21571:2005 Foodstuffs -- Methods of analysis for the detection of genetically modified organisms and derived products -- Nucleic acid extraction
ISO 24276:2006 Foodstuffs -- Methods of analysis for the detection of genetically modified organisms and derived products -- General requirements and definitions