Monitoring of the Validated Method for Aflatoxin Analysis with Internal and External Quality Control Analysis

Öz

Valide Adilmiş Aflatoksin Analiz Metodunun İç ve Dış Kalite Kontrol Analizleri İle İzlenmesi

Öz

In this research work, quality control analyses were conducted in order to monitor and evaluate the validated method for the determination of aflatoxins B₁, B₂, G₁ and G₂ in food by using immunoaffinity column and liquid chromatography with postcolumn derivation and fluorescence detection. Quality control analyses used in this study are, duplicate sampling, blank analysis, CRM, RM or QCTM material analyses, spike samples analysis, proficiency testing programs, calibration control and the use of quality control samples & control charts. In addition to these analyses, the OQ-PV test, the homogeneity of sample/sampling procedures, which can be considered as part of quality control analyses have also been used.

Private and official food control laboratories should develop inner quality assurance programs for their validated methods and constantly monitor whether these programs have been functioning as specified. At the same time, as provided by the article 5.9 of TS EN ISO/IEC17025 all laboratories must also develop quality control systems in order to monitor the validation of methods and testing. At the same time, they should participate in proficiency tests from time to time. 

Anahtar Kelimeler

• Aflatoxins Validation,Quality Control Analysis,Duplicate Sample,Blank Analysis,CRM,RM or QCTM Material Analysis,Spike Samples Analysis,Proficiency Testing Programs,Calibration Control

Kaynakça

1. Anonymous, 1992. International Organization For Standardization. ISO Guide 30, Terms and Definitions used in connection with Reference Materials, 2nd Edition, Geneva, Switzerland.
2. Anonymous, 1993. ASTM E 1301-95 Standard Guide for Proficiency Testing by Interlaboratory Comparisons. ISO Guide to the Expression of Uncertainty in Measurement.
3. Anonymous, 1997. ISO/IEC Guide 43-1 Proficiency Testing by Interlaboratory Comparisons – Part: 1, Developing and Operation of Proficiency Testing Schemes.
4. Anonymous, 1999a. ILAC Guidelines for the Requirements for the Competence of Providers Testing Schemes. Voting Draft 1.
5. Anonymous, 1999b. NCSL Recommended Practice. Guide for Interlaboratory Comparisons. Mar, RP-12. Anonymous, 2000. International Organization For Standardization. ISO Guide 33, Uses of Certified Reference Materials, 2nd Edition, Geneva, Switzerland.
6. Anonymous, 2002. Guide to Quality in Analytical Chemistry. An Aid to Accreditation, Cıtac / Eurachem Guıde.
7. Anonymous, 2005. Practical guide for the validation, quality control, and uncertainty assessment of an alternative oenological analysis method. Compendıum Of Internatıonal Analysıs Of Methods - OIV Guide for the validation – quality Control. OIV-MA-AS1-12.
8. Anonymous, 2012. TS EN ISO/IEC17025, 2012. General requirements for the competence of testing and calibration laboratories, Ankara.

9. Anonymous, 2011. Turkish Food Codex Regulation contaminants. Mycotoxins in foodstuffs the official level control for getting sample, notification of sample preparation and analysis method criteria, notification no: (28157 Official newspaper) , Ankara.
10. Baltaci, C., İlyasoğlu, H. and Cavrar, S., 2012. Aflatoxin levels in raw and processed hazelnuts in Turkey. Food Additives and Contaminants: Part B, 5(2), 83-86.
11. Baltacı, C., İlyasoğlu, H. and Yüksel, F., 2013. Single-laboratory validation for the determination of aflatoxin B 1, B 2, G 1, and G 2 in foods based on immunoaffinity column and liquid chromatography with postcolumn derivatization and fluorescence detection. Food Analytical Methods, 6(1), 36-44.
12. Schafer, W. D., Coverdale, B. J., Luxenberg, H. and Jin, Y., 2011. Quality control charts in large-scale assessment programs. Practical Assessment, Research & Evaluation, 16(15), 2.
13. Taverniers, I., De Loose, M. and Van Bockstaele, E., 2004. Trends in quality in the analytical laboratory. II. Analytical method validation and quality assurance. TrAC Trends in Analytical Chemistry, 23(8), 535-552.
14. Thompson, M. and Wood, R., 1993. The international harmonized protocol for the proficiency testing of (chemical) analytical laboratories (Technical Report). Pure and Applied Chemistry, 65(9), 2123-2144.