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Title 

Effects of environmental factors on cyanobacterial production of odorous compounds: Geosmin and 2-methylisoborneol

Authors 

Hyung Seok OhC S LeeA SrivastavaHee-Mock OhChi-Yong Ahn

Publisher 

The Korean Society for Applied Microbiology

Issue Date 

2017

Citation 

Journal of Microbiology and Biotechnology

Keywords 

2-methylisoborneolAnabaenaChemostatCyanobacteriaGeosminPlanktothrix

Abstract 

Geosmin and 2-methylisoborneol (2-MIB), responsible for earthy or musty smell, are a major concern for safe drinking water supplies. This study investigated the effects of environmental factors on odorous compound production and cell growth in cyanobacterial strains. Anabaena sp. FACHB-1384, a 2-MIB producer, was sensitive to low temperature (<20°C). However, geosmin producers, Anabaena sp. Chusori and Anabaena sp. NIER, were sensitive to high light intensity (>100 μmol/m2/sec), but not to low temperature. Geosmin concentrations increased under higher nitrate concentrations, being linearly proportional to cell density. A P-limited chemostat showed that P-stress decreased the geosmin productivity and extracellular geosmin amount per cell in Anabaena sp. NIER. However, only 2-MIB productivity was reduced in Planktothrix sp. FACHB-1374 under P-limitation. The extracellular 2-MIB amount per cell remained constant at all dilution rates. In conclusion, high light intensity and P-stress can contribute to the lower incidence of geosmin, whereas 2-MIB reduction could be attainable at a lower temperature.

ISSN 

1017-7825

Link 

http://dx.doi.org/10.4014/jmb.1702.02069

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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