National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Methodology for analysis of dairy products and their soy analogues for the presence of RoundUp Ready soybean
Tesařová, Zuzana ; Šídová, Dana ; Vráblík, Aleš ; Hodek, Jan ; Ovesná, Jaroslava
Dairy products may be subject to adulteration, where there is a relatively expensive raw material (e.g. cream) replaced by the addition of vegetable fats. Milk can be replaced in dairy products for example by soybean extract. Because soy belongs among strong allergens and the incidence of allergy is rather high. Therefore it is necessary to have a method for its detection. This work introduces the method for detection of soy, including analysis of genetic modified RoundUp Ready soybean. Detection of soybean in dairy products is based on analysis of amplification products melting profiles by High Resolution Melting (HRM) method. Analysis of geneticaly modified RoundUp Ready soybean is based on DNA detection via Polymerase Chain Reaction(PCR).
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PCR based assay for detection garden pea lec gene
Vráblík, Aleš ; Hodek, Jan ; Ovesná, Jaroslava
The method was developed and verified by staff of National reference laboratory for GMO identification and DNA fingerprinting suited for governmental control laboratories and private laboratories that analyze food and feed derived from various plant matrices. Method can be applied for quantification of GM pea in a sample, when reference gene is used as a standard. The method describe internal garden pea specific gene, lektin in this case, detection using PCR and real-time PCR. The general principle of the assay relies on lektin specific sequence presence that represents a species specific gene of garden pea. In many matrices DNA is damaged so amplification of short stretches of DNA is used. After amplification of target exploiting newly developer species specific gene primers PCR products are separated by electrophoresis in agarose gel. Resulting band is visualized by UV light and its position is compare with size standard. Alternatively, real-time PCR and ABI platform in combination with SYBR® Green can be used. Reaction parameters are described and specificity of reaction was verified. LOD as well as LOQ was defined.
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