This inventor holds 4 USPTO granted patents, plus 1 CIPO patent. Top assignees: Alko Group Ltd., Alko-Yhtiot Oy (Alko Group Ltd.), Valtion Teknillinen Tutkimuskeskus. Active years: 1997-1999.
Company Filing History:
1 out of 9 
1 out of 1 
1 out of 152 
Years Active: 1997-1999
Title: Sirkka Keranen: Innovator in Recombinant Yeast Technology
Introduction
Sirkka Keranen is a notable inventor based in Helsinki, Finland. She has made significant contributions to the field of biotechnology, particularly in the area of recombinant-DNA technology. With a total of 4 patents to her name, her work has the potential to impact various industries, including food and biofuels.
Latest Patents
One of her latest patents focuses on "Xylose utilization by recombinant yeasts." This invention relates to the development of new recombinant yeast strains that are transformed with xylose reductase and/or xylitol dehydrogenase enzyme genes. A yeast strain transformed with the xylose reductase gene can reduce xylose to xylitol, enabling the production of xylitol in vivo. Furthermore, if both genes are transformed into a yeast strain, the resultant strain can produce ethanol on xylose-containing medium during fermentation. These new yeast strains are capable of expressing the two enzymes, and xylose reductase produced by these strains can be utilized in an enzymatic process for the production of xylitol in vitro.
Career Highlights
Throughout her career, Sirkka has worked with various companies, including Xyrofin Oy and Alko Group Ltd. Her innovative approaches and research have positioned her as a key figure in her field.
Collaborations
Sirkka has collaborated with notable individuals such as Merja Elisa Penttila and Johan Hallborn. These partnerships have further enhanced her research and development efforts.
Conclusion
Sirkka Keranen's contributions to recombinant yeast technology demonstrate her commitment to innovation and research. Her patents and collaborations reflect her significant impact on the biotechnology industry.