NDLI: High-temperature sorbose fermentation with thermotolerant Gluconobacter frateurii CHM43 and its mutant strain adapted to higher temperature

Content Provider	Springer Nature Link
Author	Hattori, Hiromi Yakushi, Toshiharu Matsutani, Minesuke Moonmangmee, Duantip Toyama, Hirohide Adachi, Osao Matsushita, Kazubu
Copyright Year	2012
Abstract	We succeeded in obtaining a strain adapted to higher temperature from a thermotolerant strain, Gluconobacter frateurii CHM43, for sorbose fermentation. The adapted strain showed higher growth and l-sorbose production than original CHM43 strain at higher temperature around 38.5–40 °C. It was also shown to be useful even with the fermentation without temperature control. To understand the sorbose fermentation ability of the adapted strain at higher temperature, d-sorbitol-oxidizing respiratory chain was compared with the CHM43 strain and the adapted strain. We found that the activity of pyrroloquinoline quinone (PQQ)-dependent glycerol dehydrogenase (GLDH), which is a primary dehydrogenase of the respiratory chain and responsible for l-sorbose production, was decreased when the temperature increased, but the decreased activity of GLDH was recovered by the addition of PQQ. Since the adapted strain was found to produce more PQQ than the CHM43 strain, it was suggested that the adapted strain keeps GLDH as holoenzyme with the increased PQQ production, and thus produces more l-sorbose and grows better under higher temperature.
Starting Page	1531
Ending Page	1540
Page Count	10
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	95
Issue Number	6
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-03-22
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Quinoprotein glycerol dehydrogenase PQQ Sorbose fermentation Thermotolerance Adaptation Gluconobacter Biotechnology Microbiology Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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