the first commercial plant producing cellulosic ethanol
was commissioned in 2013 with CelluX ™
In 2012, Lesaffre acquired the XI technology – Xylose Isomerase technology – from Butalco integrate it into a Lesaffre industrial ethanol strain. This technology allows to convert the xylose into xylulose, naturally consumed by yeast, and not cofactor dependent.
The same year, Leaf was the first yeast producer to provide a yeast product able to convert C6 and C5 sugars from lignocellulosic hydrolysates into ethanol on a large scale. CelluX™ is a Saccharomyces cerevisiae yeast genetically engineered to consume xylose through the XI + XDH metabolic pathway.
In 2013, Lesaffre conducted work to improve the tolerance of the strain to second generation substrate’s specific inhibitors and obtained CelluX™ 2.
One year after, CelluX™ 3 was able to accelerate the consumption of xylose.
The 4th generation, CelluX™ 4, marketed since 2015 displays a further improved fermentation speed and shows enhanced xylose conversion.
Our research continues and we are continuously improving our strains to meet the evolving needs of the 2G ethanol producers.
CelluX™ 4 showcases excellent tolerance to second generation substrate’s specific inhibitors. This product is able to ferment despite high acetic acid and phenolic compounds concentrations. It had fast detoxification kinetics for HMF and furfural that are prevalent in hydrolysates receiving steam explosion pretreatment.
CelluX™4 is robust at different pH areas and has a high ethanol tolerance.
Since 2012, Leaf had track record on full-scale industrial production of CelluX™ under dry form and supply in the different regions of the world. It also includes the market access in the main countries working on lignocellulosic ethanol production.
We support you in your regulatory needs to import and use the product in compliance.
CelluX™ is sold in 10kg boxes of dry yeast, which limits the volume to be transported and allows a storage at room temperature (<27°C) of 2 years, without major impact on its effectiveness.
Available in 10kg box
Dry format: 24 months from production date under recommended storage conditions
Dry format: 0.5-1kg/m3 of mash