Table 1 GMO detection of food products according to group type
Food groups | Code | Number of samples | Endogenous genes | Endogenous genes detectiona | Transgenic event detection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Conventional method | Commercial kits | Qualitative PCR P35S and t-NOSb | Percentage of GTS 40-3-2 event in whole food productc | Percentage of MON810 in whole food productc | ||||||||||
CTAB | Wizard® Magnetic DNA Purification System for Food (PROMEGA) | Dneasy mericon food (QIAGEN) | P35S positive | Tnos positive | P35S and Tnos positive | Code group | % | Code group | % | |||||
Flour | F | 10 | Lectin | 5 | 5 | 7 | 9 | 5 | 5 | F1 | 0.1 | F2 | 0.1 | |
F3 | 1.8 | |||||||||||||
Alcohol dehydrogenase | 4 | 5 | 4 | F6 | 4.7 | F6 | 3.7 | |||||||
F8 | 2.3 | |||||||||||||
Cereal | C | 4 | Lectin | 2 | 1 | 3 | 4 | 0 | 0 | C1 | 1.1 | |||
Alcohol dehydrogenase | 1 | 0 | 1 | |||||||||||
Grain | G | 3 | Lectin | 1 | 1 | 3 | 3 | 0 | 0 | G3 | 0.1 | |||
Alcohol dehydrogenase | 2 | 2 | 1 | |||||||||||
Snacks | Sk | 4 | Lectin | 0 | 0 | 3 | 4 | 1 | 1 | n/a | n/a | |||
Alcohol dehydrogenase | 2 | 4 | 1 | n/a | n/a | |||||||||
Sausage | S | 14 | Lectin | 11 | 9 | 14 | 6 | 2 | 2 | S1 | 2.3 | |||
S2 | 2.1 | |||||||||||||
Alcohol dehydrogenase | 0 | 3 | 1 | S3 | 4.2 | |||||||||
S5 | 2.3 | |||||||||||||
S13 | 1.9 | |||||||||||||
Total | 35 | 26 | 8 | 8 | ||||||||||