A new exopolysaccharide produced by marine Cyanothece sp. 113.
Cyanothece sp. 113, a unicellular, aerobic, diazotrophic and photosynthetic marine cyanobacterium, produced 22.34 g/l of exopolysaccharide in 11 days at 29 degrees C, aeration rate of 7.0 l/min and continuous illumination with 4300 lux. After purification, the spectra of UV, IR, (1)H NMR, (13)C NMR and GC-MS analysis showed that the purified exopolysaccharide was alpha-D-1,6-homoglucan. This is first report describing linear alpha-D-1,6-homoglucan exopolysaccharide produced by marine cyanobacteria.
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UNESCO Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, Qingdao, China. zhenming@sdu.edu.cn
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D046889:Cyanothece / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry; D008386:Marine Biology; D019906:Nuclear Magnetic Resonance, Biomolecular; D011134:Polysaccharides / Q000096:biosynthesis* / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D011134:Polysaccharides