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New Thermus thermophilus Study Results from Konkuk University Described

June 4, 2014

By a News Reporter-Staff News Editor at Biotech Week -- A new study on Gram-Negative Bacteria is now available. According to news reporting originating in Seoul, South Korea, by NewsRx journalists, research stated, "Beta-Glucosidase from Thermus thermophilus has specific hydrolytic activity for the outer glucose at the C-20 position in protopanaxadiol-type ginsenosides without hydrolysis of the inner glucose."

The news reporters obtained a quote from the research from Konkuk University, "The hydrolytic activity of the enzyme for gypenoside XVII was optimal at pH 6.5 and 90 A degrees C, with a half-life of 1 h with 3 g enzyme l(-1) and 4 g gypenoside XVII l(-1). Under the optimized conditions, the enzyme converted the substrate gypenoside XVII to ginsenoside F-2 with a molar yield of 100 % and a productivity of 4 g l(-1) h(-1)."

According to the news reporters, the research concluded: "The conversion yield and productivity of ginsenoside F-2 are the highest reported thus far among enzymatic transformations."

For more information on this research see: Highly selective hydrolysis for the outer glucose at the C-20 position in ginsenosides by beta-glucosidase from Thermus thermophilus and its application to the production of ginsenoside F-2 from gypenoside XVII. Biotechnology Letters, 2014;36(6):1287-1293. Biotechnology Letters can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer -; Biotechnology Letters -

Our news correspondents report that additional information may be obtained by contacting K.C. Shin, Konkuk University, Dept. of Biosci & Biotechnol, Seoul 143701, South Korea. Additional authors for this research include M.J. Seo, H.J. Oh and D.K. Oh (see also Gram-Negative Bacteria).

Keywords for this news article include: Asia, Seoul, Cellulases, South Korea, Triterpenes, Ginsenosides, beta-Glucosidase, Glycoside Hydrolases, Thermus thermophilus, Enzymes and Coenzymes, Gram-Negative Bacteria, Gram-Negative Aerobic Rods and Cocci

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Biotech Week

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