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Studies from Istanbul Technical University Have Provided New Data on Applied microbiology and biotechnology

May 7, 2014

By a News Reporter-Staff News Editor at Biotech Week -- Fresh data on Biotechnology are presented in a new report. According to news originating from Sariyer, Turkey, by NewsRx correspondents, research stated, "In this study, typical niches of acetic acid bacteria were screened for isolation of cellulose producer strains. Hestrin Schramm broth was used as enrichment and production media."

Our news journalists obtained a quote from the research from Istanbul Technical University, "Only nine out of 329 isolates formed thick biofilms on liquid surface and were identified as potential cellulose producers. Physiological and biochemical tests proved that all cellulose producers belonged to Gluconacetobacter genus. Most productive and mutation-resistant strain was subjected to 16S rRNA sequence analysis and identified as Gluconacetobacter hansenii P2A due to 99.8 % sequence similarity. X-ray diffraction analysis proved that the biofilm conformed to Cellulose I crystal structure, rich in I-alpha mass fraction. Static cultivation of G. hansenii P2A in HS medium resulted with 1.89 +/- 0.08 g/l of bacterial cellulose production corresponding to 12.0 +/- 0.3 % yield in terms of substrate consumption. Shaking and agitation at 120 rpm aided in enhancement of the amount and yield of produced cellulose."

According to the news editors, the research concluded: "Productivity and yield reached up to 3.25 +/- 0.11 g/l and 17.20 +/- 0.14 % in agitated culture while a slight decrease from 78.7 % to 77.3 % was observed in the crystallinity index."

For more information on this research see: Isolation and characterization of an efficient bacterial cellulose producer strain in agitated culture: Gluconacetobacter hansenii P2A. Applied Microbiology and Biotechnology, 2014;98(3):1065-1075. Applied Microbiology and Biotechnology can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer -; Applied Microbiology and Biotechnology -

The news correspondents report that additional information may be obtained from Y.A. Aydin, Istanbul Technical University, Dept. of Chem Engn, TR-34469 Sariyer, Turkey (see also Biotechnology).

Keywords for this news article include: Biotechnology, Turkey, Sariyer, Eurasia

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Source: Biotech Week

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