May 22, 2012 | 3:43 pm

Mais Bt11


 Summary of risk assessment
 

Opinion of the former Scientific Committee on Plants (SCP)
Adopted 17/04/2002
Conclusion Bt11 maize is as safe as conventional maize, and releasing Bt11 for processing and food and feed use is unlkikely to cause adverse effects on human health and the environment.

 

Comparative analysis
Basis of comparison Conventional counterpart (isogenic line). No difference in the phyiscal properties of kernels could be found.
Compositional analysis Several parameters were compared, including: moisture content, protein content, lipids, sugars, carbohydrates, calories, vitamin A, vitamin C, sodium, potassium, and iron content. No differences were observed.

 

Safety of food and feed
New proteins(CRY1A(b)+PAT) Comparison with known toxins: No correspondence
Allergenicity of the new proteins(PAT+Cry1A(b))

No correspondence with known allergens(amino acid sequence comparison)

Proteins are rapidly broken down during digestion.

Feeding studies Tests on mice (supplied with the recombinant protein via drinking water) did not show signs of negative health effects.

 

Environmental safety
Surviveability Maize is highly domesticated and is not viable outside of cultivation.
Out-crossing Maize has no cross-compatible wild relatives in Europe. Out-crossing is only possible with maize in neighbouring fields.
Field trials Evaluation of field trials in France (1999) and in the US (1995-1999).