Plastics from engineered yeast?
We're going to run out of oil someday -- whether it's now or 75 years from now. Plastics are pretty important and we'll need a way to produce them once we run out of oil. Given all of that, how cool is this?
Engineered yeast could produce low-cost plastics from renewable resources:
The researchers engineered C. tropicalis to transform fatty acids into omega-hydroxyfatty acids, a monomer that when polymerized provides a variety of options for developing new bio-based plastics with attractive physical properties. Usually, these acids are difficult and expensive to prepare using traditional methods. The key to getting the yeast to produce large amounts of omega-hydroxyfatty acids was eliminating certain enzymes that further oxidize these acids into unwanted diacids. The researchers identified and eliminated 16 genes and other oxidation pathways, which resulted in a 90% reduction in the activity that converts omega-hydroxyfatty acids to diacids.
As the scientists explained, this new engineered strain of C. tropicalis provides a foundation for the development of low-cost methods of producing omega-hydroxyfatty acids for conversion into plastics. Plastics produced by this method could have a variety of uses, as previous research has shown that plastics produced from a very similar omega-hydroxyfatty acid are strong, ductile materials. The plastics could have applications in lubricants, adhesives, cosmetics, and anti-cancer therapies, and could also be recycled through a conversion process that results in a biofuel similar to biodiesels such as Soy Gold.
This entry was tagged. Innovation