scholarly journals Development of Genomic DNA Certified Reference Materials for Genetically Modified Rice Kefeng 6

ACS Omega ◽  
2020 ◽  
Vol 5 (34) ◽  
pp. 21602-21609
Author(s):  
Jun Li ◽  
Li Zhang ◽  
Liang Li ◽  
Xiaying Li ◽  
Xiujie Zhang ◽  
...  
Keyword(s):  
Reference Materials ◽  
Genomic Dna ◽  
Certified Reference Materials ◽  
Genetically Modified ◽  
Genetically Modified Rice

scholarly journals Production of Certified Reference Materials for the Detection of Genetically Modified Organisms

2002 ◽  
Vol 85 (3) ◽  
pp. 775-779 ◽  
Author(s):  
Stefanie Trapmann ◽  
Heinz Schimmel ◽  
Gerard Nico Kramer ◽  
Guy van den Eede ◽  
Jean Pauwels
Keyword(s):  
Reference Materials ◽  
Genetically Modified Organisms ◽  
Production Control ◽  
Certified Reference Materials ◽  
Genetically Modified ◽  
Base Material ◽  
Genetically Modified Organism ◽  
International Organization ◽  
Roundup Ready

Abstract Certified reference materials (CRMs) are an essential tool in the quality assurance of analytical measurements. They are produced, certified, and used in accordance with relevant ISO (International Organization for Standardization) and BCR (Community Bureau of Reference) guidelines. The Institute for Reference Materials and Measurements (IRMM; Geel, Belgium) has produced the first powdery genetically modified organism (GMO) CRMs in cooperation with the Institute for Health and Consumer Protection (Ispra, Italy). Until now, different weight percentages in the range of 0–5%for 4 GMOs in Europe were produced and certified: Bt (Bacillus thuringiensis)-11 and Bt-176 maize, Roundup Ready® soybean, and MON810 maize. Bt-11 and Bt-176 maize and Roundup Ready soybean were produced by IRMM on behalf of Fluka Chemie AG (Buchs, Switzerland). Characterization of used base material is the first step in production and is especially important for GMO CRMs. The production of powdery GMO CRMs and methods used for production control are described. Thorough control of homogeneity and stability are essential for certification of reference materials and ensure validity of the certificate for each bottle of a batch throughout a defined shelf-life. Because production of reference materials and their maintenance are very labor- and cost-intensive tasks, the usefulness of new types of GMO CRMs must be estimated carefully.

Development of reference materials with the composition of propyl and isopropyl alcohol solutions

2020 ◽  
pp. 66-72
Author(s):  
Irina A. Piterskikh ◽  
Svetlana V. Vikhrova ◽  
Nina G. Kovaleva ◽  
Tatyana O. Barynskaya
Keyword(s):  
Reference Materials ◽  
Measurement Errors ◽  
Isopropyl Alcohol ◽  
Certified Reference Materials ◽  
Toxic Substances ◽  
Biological Objects ◽  
Margin Of Error ◽  
Measurement Results ◽  
And Control ◽  
Characteristic Mass

Certified reference materials (CRM) composed of propyl (11383-2019) and isopropyl (11384-2019) alcohols solutions were created for validation of measurement procedures and control of measurement errors of measurement results of mass concentrations of toxic substances (alcohol) in biological objects (urine, blood) and water. Two ways of establishing the value of the certified characteristic – mass consentration of propanol-1 or propanol-2 have been studied. The results obtained by the preparation procedure and comparison with the standard are the same within the margin of error.

PROGRESS ON THE DEVELOPMENT OF CERTIFIED REFERENCE MATERIALS FOR Aβ1-42

2017 ◽  
Vol 13 (7) ◽  
pp. P1512
Author(s):  
Sébastien Boulo ◽  
Julia Kuhlmann ◽  
Andreas Leinenbach ◽  
Tobias Bittner ◽  
Leentje Demeyer ◽  
...  
Keyword(s):  
Reference Materials ◽  
Certified Reference Materials

scholarly journals Development and certification of a reference material for zearalenone in maize germ oil

2021 ◽  
Author(s):  
Juliane Riedel ◽  
Sebastian Recknagel ◽  
Diana Sassenroth ◽  
Tatjana Mauch ◽  
Sabine Buttler ◽  
...  
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Mass Fraction ◽  
High Performance ◽  
Certified Reference Materials ◽  
Maximum Level ◽  
Whole Process ◽  
Commission Regulation ◽  
Maize Oil ◽  
Maize Germ

AbstractZearalenone (ZEN), an estrogenic mycotoxin produced by several species of Fusarium fungi, is a common contaminant of cereal-based food worldwide. Due to frequent occurrences associated with high levels of ZEN, maize oil is a particular source of exposure. Although a European maximum level for ZEN in maize oil exists according to Commission Regulation (EC) No. 1126/2007 along with a newly developed international standard method for analysis, certified reference materials (CRM) are still not available. To overcome this lack, the first CRM for the determination of ZEN in contaminated maize germ oil (ERM®-BC715) was developed in the frame of a European Reference Materials (ERM®) project according to the requirements of ISO Guide 35. The whole process of CRM development including preparation, homogeneity and stability studies, and value assignment is presented. The assignment of the certified mass fraction was based upon an in-house study using high-performance liquid chromatography isotope dilution tandem mass spectrometry. Simultaneously, to support the in-house certification study, an interlaboratory comparison study was conducted with 13 expert laboratories using different analytical methods. The certified mass fraction and expanded uncertainty (k = 2) of ERM®-BC715 (362 ± 22) μg kg−1 ZEN are traceable to the SI. This reference material is intended for analytical quality control and contributes to the improvement of consumer protection and food safety. Graphical abstract

Willingness-to-accept and purchase genetically modified rice with high folate content in Shanxi Province, China

Appetite ◽  
2010 ◽  
Vol 54 (1) ◽  
pp. 118-125 ◽  
Author(s):  
H. De Steur ◽  
X. Gellynck ◽  
S. Storozhenko ◽  
G. Liqun ◽  
W. Lambert ◽  
...  
Keyword(s):  
Genetically Modified ◽  
Shanxi Province ◽  
Willingness To Accept ◽  
Genetically Modified Rice
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