Fire-retardent DNA produced by genetically engineered bacteria

The team, which is to enter this year’s International Genetically Engineered Machine competition (iGEM), hopes to make use of DNA’s recently discovered application as a flame retardant to make expanded polystyrene (EPS) less flammable.

In order to produce large amounts of DNA at low costs, the students hope to genetically engineer bacteria to produce much more DNA in their cells than usual. The DNA-rich bacteria could then be added to the polystyrene to make it less susceptible to burning.

Expanded PolyStyrene (EPS) – which is frequently used for insulation in buildings - is highly flammable and Hexabromocyclododecane (HBCD) is often added as a flame retardant in construction applications.

In a statement the university pointed out that the European Union organisation REACH has listed HBCD as a ‘persistent bio-cumulative toxin’, meaning that it can accumulate in the environment and alter biological processes, such as hormone levels in fish.

REACH is phasing out HBCD by 2015, so developing an alternative flame retardant would be beneficial for the environment and the EPS industry.