Compared to prior generations, CodeXyme® 4 and CodeXyme® 4X significantly reduce the cost of cellulosic sugar production for biofuels and bio-based chemicals
Codexis’ latest generation of advanced cellulase enzymes, CodeXyme® 4 for dilute acid pretreatments and CodeXyme®4X for hydrothermal pretreatments, exhibits excellent performance, converting up to 85% of available fermentable sugars at high biomass and low enzyme loads. Combined with high strain productivity using the CodeXporter® enzyme production system, this allows for a cost-in-use that the company believes will be among the lowest available once in full-scale commercial production.
CodeXyme® 4 increases performance 10-20% over Codexis’ last generation product, CodeXyme® 3, measured by the amount of glucan converted into C6 fermentable sugar. For pre-treatments with unconverted xylan, CodeXyme® 4X maintains the same high C6 sugar activity while having additional C5 sugar conversion.
“After four years of development using our CodeEvolver® directed evolution technology platform, we are proud to announce that our high-performing CodeXyme® cellulases are broadly available for the first time,” said
Leading Enzyme Performance
During the past several months, CodeXyme® cellulase has been tested on a variety of feedstocks and pre-treatments, including corn stover, corn cobs, sugarcane bagasse, cane straw, wheat straw and rice straw. In all cases, CodeXyme® 4 and 4X have been found to convert 75 – 85% of glucan and xylan into C6 and C5 sugars, at 10 – 15g enzyme per kg of glucan. With consistently high sugar conversion, customers are able to convert more sugar into high-value biofuels and bio-based chemicals.
In a Codexis-sponsored third-party test performed by Chemical Engineering Research Consultants in Toronto, Canada, CodeXyme® 4 cellulase performed comparably or better than other leading enzymes. The study compared the conversion of glucan to C6 sugars on dilute-acid pre-treated corn stover, using leading commercial enzyme products at their optimal pH and temperature. CodeXyme® 4 was found to convert the same or more glucan at the same or lower enzyme load as competing cellulase packages.
In addition, Codexis commissioned a 2012 U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) study of CodeXyme® 3, Codexis’ prior generation cellulase package. In this study, NREL measured the ability of CodeXyme® 3 cellulase to convert cellulose into glucan at CodeXyme’s optimal pH of 5.5 and temperature of 55°C, with dilute acid pretreated corn stover as the substrate. In a previously published NREL study (McMillan et al., Comparative Performance of Pre-commercial Cellulases Hydrolyzing Pretreated Corn Stover, Biotechnology for Biofuels 2011, 4:29), NREL measured the hydrolysis performance of 2009-10 enzyme packages from Novozymes, DuPont, DSM and Verenium on the same dilute-acid corn stover used in the 2012 CodeXyme® 3 study. The McMillan study was conducted at a pH of 5.0 and temperature of 50°C. Based on Codexis’ comparison of the results of the 2012 NREL study of CodeXyme® 3 with the results of the McMillan study, Codexis concluded that CodeXyme® 3 performed equally or better than the enzyme packages described in the McMillan study.
Commercial and Manufacturing Plan
Learn more about CodeXyme® cellulase at www.codexis.com/codexyme.
CodeXyme®, CodeEvolver®, CodeXporter® and CodeXol™ are trademarks or registered trademarks of
This press release contains forward-looking statements relating to ability of Codexis’ CodeXyme® cellulase enzymes to significantly improve yields and reduce the cost of cellulosic sugar production for biofuels and bio-based chemicals, the potential commercial scale-up of Codexis’ CodeXyme® cellulase enzymes in the second quarter of 2013, the scheduled use of Codexis’ CodeXyme® cellulase enzymes in our CodeXol™ detergent alcohol demonstration facility by mid-2013 and Codexis’ expectation that CodeXyme’s first full-scale commercial facility will result in CodeXyme® cellulase becoming the lowest cost-in-use enzyme package. You should not place undue reliance on these forward-looking statements because they involve known and unknown risks, uncertainties and other factors that are, in some cases, beyond our control and could materially affect actual results. Factors that could materially affect actual results include the success of Codexis’ CodeXyme® cellulase enzymes program being heavily dependent on Codexis’ ability to secure third-party funding; the feasibility of the commercialization of biofuels derived from cellulose; Codexis’ ability to maintain license rights to a commercial scale expression system for enzymes that convert cellulosic biomass to sugars; fluctuations in the price of and demand for certain commodities may reduce demand for Codexis’ technology; Codexis’ biofuel business opportunities may be limited by the availability, cost or location of feedstocks; and changes to existing biofuel regulations and policies may present technical, regulatory and economic barriers to demand for Codexis’ CodeXyme® cellulase enzymes. Additional factors that could materially affect actual results can be found in Codexis’ Quarterly Report on Form 10-Q for the period ended