Terranol A/S is a Copenhagen based company that is highly experienced in industrial biotechnology.
We offer proprietary yeast strains and fermentation technology for 2G bioethanol production and provide extensive assistance when it comes to implementing our strains in a large-scale production process.

Our Technology

Yeast strain technology

Yeast fermentation strategy

Yeast strain development
Our engineered yeast strain cV-110 features a combination of two heterologous enzymes of bacterial origin, xylose isomerase and aldose 1-epimerase, as well as the upregulation of the following enzymes as part of the pentose-phosphate pathway: ribose-5-phosphate, transketolase, and transaldolase.

This unique combination of genetic alterations allows cV-110 to:

  • Simultaneously utilize C6 and C5 sugars in an efficient manner, also at low xylose concentration
  • Operate with a balanced cofactor requirement
  • Convert xylose anomers and xylulose into pentose-phosphate pathway intermediates at a high rate
  • Show a robust performance and high ethanol yields on lignocellulosic-based feedstocks, such as agricultural crop residues and wood & paper mill discards.

Fed-batch fermentations yielding 95% or more have previously shown scalability from 2 L laboratory scale to 270.000 L demonstration scale, and vice versa

Yeast Propagation and Storage
In order to generate viable yeast cells for e.g. inoculation, a protocol for efficient yeast propagation was developed, resulting in cell concentrations above 100 g/L.

In parallel, a protocol for drying yeast cells was established to allow for easy delivery of dry yeast batches for e.g. pitching guaranteeing reproducible cell viability and performance after hydration.

Protocols and provision of dry yeast samples on request

Yeast Fermentation Strategy
The yeast fermentation strategy applying the CoRyFee platform allows for superior fermentation performance and higher ethanol yields due to continuous monitoring of the culture broth and inter-coordinated control of the feeding rate. In this fermentation set-up, the real-time monitoring of fermentation intermediates in the culture broth allows for the dynamic adjustment of the feeding rate to keep the ratio of C6 and C5 sugars present in the feed an optimal value for efficient co-consumption of sugars by our engineered yeast strain.

This fermentation strategy was developed with SEKAB E-Technology AB and proven successful at a 10.000 L scale fermenting 50.000 L of hydrolysate by achieving an ethanol yield of 95 % at the Biorefinery Demo Plant in Örnsköldsvik, Sweden.

This fermentation strategy is superior to conventional batch fermentations by allowing a:

  • 6-fold increase in volumetric ethanol productivity
  • 20-fold lower yeast utilization and thus a better yeast economy
  • 50% lower investment cost due to reduced need for tank volume, cleaning, and sterilization

Furthermore, this yeast fermentation strategy applying the CoRyFee platform shows a stable performance over more than 21 days paired with the flexibility to use various fermenting organisms and substrates.

Development of project specific fermentation concepts offered on request.

Yeast strain technology

Yeast in microscope

Yeast fermentation strategy

Yeast strain development
Our engineered yeast strain cV-110 features a combination of two heterologous enzymes of bacterial origin, xylose isomerase and aldose 1-epimerase, as well as the upregulation of the following enzymes as part of the pentose-phosphate pathway: ribose-5-phosphate, transketolase, and transaldolase.

This unique combination of genetic alterations allows cV-110 to:

  • Simultaneously utilize C6 and C5 sugars in an efficient manner, also at low xylose concentration
  • Operate with a balanced cofactor requirement
  • Convert xylose anomers and xylulose into pentose-phosphate pathway intermediates at a high rate
  • Show a robust performance and high ethanol yields on lignocellulosic-based feedstocks, such as agricultural crop residues and wood & paper mill discards.

Fed-batch fermentations yielding 95% or more have previously shown scalability from 2 L laboratory scale to 270.000 L demonstration scale, and vice versa

Yeast Propagation and Storage
In order to generate viable yeast cells for e.g. inoculation, a protocol for efficient yeast propagation was developed, resulting in cell concentrations above 100 g/L.

In parallel, a protocol for drying yeast cells was established to allow for easy delivery of dry yeast batches for e.g. pitching guaranteeing reproducible cell viability and performance after hydration.

Protocols and provision of dry yeast samples on request

Yeast Fermentation Strategy
The yeast fermentation strategy applying the CoRyFee platform allows for superior fermentation performance and higher ethanol yields due to continuous monitoring of the culture broth and inter-coordinated control of the feeding rate. In this fermentation set-up, the real-time monitoring of fermentation intermediates in the culture broth allows for the dynamic adjustment of the feeding rate to keep the ratio of C6 and C5 sugars present in the feed an optimal value for efficient co-consumption of sugars by our engineered yeast strain.

This fermentation strategy was developed with SEKAB E-Technology AB and proven successful at a 10.000 L scale fermenting 50.000 L of hydrolysate by achieving an ethanol yield of 95 % at the Biorefinery Demo Plant in Örnsköldsvik, Sweden.

This fermentation strategy is superior to conventional batch fermentations by allowing a:

  • 6-fold increase in volumetric ethanol productivity
  • 20-fold lower yeast utilization and thus a better yeast economy
  • 50% lower investment cost due to reduced need for tank volume, cleaning, and sterilization

Furthermore, this yeast fermentation strategy applying the CoRyFee platform shows a stable performance over more than 21 days paired with the flexibility to use various fermenting organisms and substrates.

Development of project specific fermentation concepts offered on request.

About Us

Birgitte Rønnow

CEO and co-founder

Birgitte Rønnow holds a PhD in yeast genetics and molecular biology from University of Copenhagen and has worked with strain development and microbial genetics and physiology. Before starting at Terranol she was employed by Danisco Innovation (now DuPont) for 20 years and has extensive experience in planning and managing interdisciplinary projects with external partnership covering research, development, pilot and production.

Thomas Hvid Andersen

COO and co-founder

Thomas Hvid Andersen holds a PhD in yeast molecular genetics from University of Copenhagen. He has formerly held positions in University, Poalis A/S, and Danisco Innovation (now DuPont) with research duties mainly focused on yeast genetics, yeast pathway engineering and physiology, enzyme technology and de novo production of small molecules.

Jan Dines Knudsen

Senior Scientist

Jan Dines Knudsen is the senior scientist. Post-graduate studies include a PhD in applied microbiology. He has several years of experience in applied, and fundamental, research from academia and industry; acquired in Denmark, Sweden, Germany and Italy. His research has focused mainly, but not only, on yeast fermentation and physiology. He is the first author of several peer-to-peer papers, co-inventor of a patent and has presented at several international conferences.

Henrique Veras

Fermentation Scientist

Henrique Veras holds a position as fermentation scientist. He worked as a postdoc in applied microbiology at Lund University (Sweden) and as a scientific consultant at EMBRAPA Agroenergy (Brazil). Post-graduate studies include a PhD in molecular biology from University of Brasilia (UNB) and an MSc in biotechnology from the Catholic University of Brasilia (UCB). He has experience in bacteria and yeast strain development, metabolic flux analysis, and fermentation process.

News

May 2020

Terranol hires fermentation scientist.

April 2020

Terranol publishes ”Extended fed-batch fermentation of a C5/C6 optimised yeast strain on wheat straw hydrolysate using an online refractive index sensor to measure the relative fermentation rate” in Scientific reports 10, 6705 (2020).
Read more

January 2020

The NewLiEP project between SEKAB, Kanteleen Voima, and Terranol builds on the successful development of the fermentation concept CoRyFee. We bridge the gap to economically feasible transportation from Nordic wood and progress can be followed.
Read more

October 2019

The CoRyFee fermentation concept “Cost Reduction in Yeast Fermentation for Commercial Production of Cellulosic Ethanol” is presented at “BESTF3 Final Forum” in Brussels, November 21.
Read more

October 2019

Terranol hires fermentation scientist.

August 2019

In an EU funded project, a consortium consisting of Terranol (DEN), SEKAB (SWE), and Kanteleen Voima (FIN) have joined forces to introduce to market an economically feasible concept for sustainable fuel ethanol production from softwood and hardwood, feedstock currently not effectively utilized by any commercially available technology.
Read more

June 2019

Terranol publishes “Optimising fermentation“ in Biofuels International Magazine, issue 3, volume 13.
Read more

June 2019

At “35th Annual International Fuel Ethanol Workshop & Expo”, June 11, 2019 in Indianapolis, USA, the presentation “Injecting new life into cellulosic ethanol production” will be given.
Read more

November 2018

Terranol, SEKAB, and RISE concluded the CoRyFee project “Cost Reduction in Yeast Fermentation for Commercial Production of Cellulosic Ethanol”.
Read more

April 2018

At the “40th Symposium on Biotechnology for Fuels and Chemicals”, May 1, 2018 in Florida, USA, the presentation “Reducing the fermentation costs for lignocellulosic ethanol by closing the gap between fed batch and continuous fermentation” will be given.
Read more

September 2016

Terranol hires fermentation scientist.

May 2016

As of May 1, 2016, Terranol has relocated from the campus of Technical University of Denmark (DTU) to the Copenhagen campus of Aalborg University (AAU), close to the center of Copenhagen.

April 2015

Terranol and Inbicon have successfully demonstrated a fast and high yielding C6/C5 sugar co-fermentation process in industrial scale (270.000 liter) for cellulosic bioethanol production.
See the news release here
Download PDF: Press release

April 2015

SEKAB, RISE, and Terranol have initiated a collaboration project, supported by the EU BESTF2 programme and the Danish and Swedish energy agencies, to demonstrate in pilotscale (10.000 L) the potential of combining their respective technologies for cellulosic ethanol production.
See the news release here
Download PDF: Press Release