Low cost yeast grown on biofuel waste stream - FeedNavigator.com

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Australian biotech firm, MicroBioGen, claims to have developed “the world’s best biocatalyst for second generation biofuels”​ with a genetically modified version of common yeast.

Some 15 years in development, the optimized strain enables non-food biomass to be converted into biofuels efficiently and economically, producing a high value, low cost yeast that can be incorporated into animal feeds, according to the company.

“We specialize in one organism; it is the world’s number one industrial organism, underpinning somewhere between one and two trillion US products per year. If you didn’t have that organism you could wave goodbye to wine, beer, spirits, bread and biofuel,”​ Geoff Bell, CEO of MicroBioGen, told FeedNavigator.

The organism he is referring to is the common yeast Saccharomyces cerevisiae​. MicroBioGen has spent the last 20 years optimizing the genetics of this yeast for specific industrial uses.

“What we have now achieved is the world’s best biocatalyst for second generation biofuels,” ​said Bell.

Second-generation challenges​

While first-generation biofuels are produced by converting easy-to-use sugars into ethanol, second-generation biofuels are produced from non-food matter, which is a much more complex process.

“You have to break the substrate down into component sugars via fermentation. This is challenging because there are food and non-food sugars and to make it work you have to convert all of those sugars into the ethanol. Up until ten years ago that wasn’t possible because it requires genetic engineering,” ​explained Bell.

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